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2008Jan08MustangOOFResults 14 Feb 2008 - 22:48 - r1.5 ToddHunter
Comparison of Mustang and Q-band OOF (Jan 8, 2008) for Q-band data, goto 2008Jan08QBandOOFResults this page Mustang data (this page) (Bojan) As promised, some results ...  
2008Jan08QBandOOFResults 12 Feb 2008 - 15:50 - r1.4 ToddHunter
Q Band OOF results from Jan 8, 2008 Note: for contemporaneous Mustang results, goto 2008Jan08MustangOOFResults this page Q Band results (with Zernikes enabled) from ...  
AGBT08A_056_04 27 Feb 2008 - 23:43 - r1.4 ToddHunter
Mustang science run AGBT08A 056 04 Some of the scans of interest to PTCS Notes: in the following plots, the "commanded" values were extracted from: /home/gbtlogs ...  
AGBT08A_056_08 19 Mar 2008 - 03:06 - NEW ToddHunter
hi Bojan, all- Thursday morning of this past week we had a great MUSTANG (science) run and in the process collected a couple of quick OOF maps. These used daisy scans ...  
AcceleratedPTCSPlan 07 Jun 2007 - 15:11 - r1.9 JohnFord
Accelerated PTCS Project Plans This page describes the extension/acceleration of the PTCS project that will be possible with additional funding. TOC Rationale The ...  
AccelerationFeedforward 19 Sep 2007 - 14:38 - r1.4 TimWeadon
Acceleration Feedforward Project Justification The GBT servo system suffers from velocity tracking errors at low velocities. One cause of this has been identified ...  
AccelerometerFour 18 Apr 2008 - 15:53 - NEW ToddHunter
Accelerometer four Main.ToddHunter 18 Apr 2008 photo taken while clamped during test period: top view photo taken while clamped during tests:  
AccelerometerFourStatus 30 Jun 2008 - 15:12 - NEW ToddHunter
Accelerometer 4 status Odd behavior compared to other accelerometers Plots from Kim (23-Jun-2008) Note the event around the 6th tick on the x-axis where the blue ...  
AccelerometerHardwareSignalProcessing 19 Dec 2007 - 17:09 - NEW ToddHunter
Date: Fri, 02 Nov 2007 16:17:45 0400 From: Jason Ray To: Todd R. Hunter Subject: Re: Accelerometer Calibration Hi Todd, Yes, the X axis is setup differently than ...  
AccelerometerOne 12 Jul 2007 - 18:22 - r1.2 ToddHunter
Photos from Jason: Main.ToddHunter 11 Jul 2007 photo of accelerometer and GDAQ box on the ceiling: contextual view (upper righthand corner): area prior to mounting ...  
AccelerometerSignalProcessing 11 Jul 2007 - 20:11 - NEW ToddHunter
Date: Wed, 11 Jul 2007 12:55:37 0400 (EDT) From: Joe Brandt To: Todd R. Hunter The Y and Z axes inputs are 23 bit, bipolar; the X axis is 16 bit unipolar. So the ...  
AccelerometerStatusLog 09 Dec 2006 - 17:29 - r1.2 RichardPrestage
4 Sept 2003: Channels on accelerometers may be reversed when compared to previous data. Check with elevation changes to determine which is which. Main.KimConstantikes ...  
AccelerometerSystemDescription 30 Jun 2008 - 14:46 - r1.27 ToddHunter
Accelerometer System Description There are three sets of 3-axis accelerometers installed on the GBT, one in the receiver room and one on each EL bearing casting. The ...  
AccelerometerTwo 18 Apr 2008 - 16:06 - NEW ToddHunter
Accelerometer #2 photo in the lab lab photo showing the accelerometer side of the box: lab photo showing the inclinometer side of the box:  
ActiveSurface 13 May 2008 - 16:09 - r1.4 ToddHunter
Active Surface Introduction Introduction ActiveSurfaceGeneralStrategy General Strategy ActiveSurfaceObservingProcedures Observing Procedures These pages provide ...  
ActiveSurfaceEnginneeringNotes 17 Jul 2008 - 18:48 - r1.4 PeteWhiteis
-- Main.PeteWhiteis 12 Jun 2008 02 Jun 2008 Have begun the long process of porting AS code to RTAI. To date: Ported essential components of mcTime routines to RTAI ...  
ActiveSurfaceGeneralStrategy 18 Jun 2007 - 18:41 - r1.7 ToddHunter
Active Surface General Strategy ActiveSurface Introduction General Strategy ActiveSurfaceObservingProcedures Observing Procedures The GBT's primary surface consists ...  
ActiveSurfaceImprovements 20 Apr 2007 - 13:46 - NEW AmyShelton
Active Surface Software Upgrade The Active Surface Software is suffering from a bit of neglect. The system is one of the more unreliable in the telescope. It should ...  
ActiveSurfaceObservingProcedures 09 Dec 2006 - 18:00 - r1.11 RichardPrestage
Active Surface Observing Procedures ActiveSurface Introduction ActiveSurfaceGeneralStrategy General Strategy Observing Procedures This page is out of date. OOF Holography ...  
ActiveSurfacePTCS 18 Jul 2008 - 17:17 - r1.20 ToddHunter
Active Surface PTCS Test information http://wiki.gb.nrao.edu/bin/view/PTCS/Photogrammetry Photogrammetry results Recent actuator repeatibility tests (March 2008 ...  
ActuatorTable 20 Jun 2008 - 15:01 - NEW ToddHunter
Conversion between node number and other values Actuator index the value used in Jason's maintenance spreadsheet Note: 6 angles right side of dish, 7 angles left ...  
AirTemperature 09 Dec 2006 - 16:47 - r1.4 RichardPrestage
AirTemperatureStatusAndLog AirTemperatureNewResults AirTemperatureSensorPics AirTemperatureCalibration Main.KimConstantikes 02 Oct 2003  
AirTemperatureCalibration 02 Mar 2005 - 16:33 - NEW JasonRay
AirTemperatureZeroPoint Main.JasonRay 02 Mar 2005  
AirTemperatureNewResults 09 Dec 2006 - 16:47 - r1.2 RichardPrestage
Here are some plots of the air temperature top-to-bottom from locations on the GBT. Note the night-time temperature inversions, the large delta-Ts, and very rapid ...  
AirTemperatureSensorPics 09 Dec 2006 - 16:44 - r1.2 RichardPrestage
-- Main.JasonRay 26 Mar 2004 Air Temp Sensor #1 GBT Level 2 Air Temp Sensor #2 VFA tip, same elevation as 41020 Air Temp Sensor #3 Quadrant Detector level, 10230R ...  
AirTemperatureStatusAndLog 09 Dec 2006 - 16:44 - r1.13 RichardPrestage
25 Sept 2003: Installed air temperature sensor #1 at GBT level 2 and connected to concentrator #5, port 2006. Reconfigured software and restarted manager. This sensor ...  
AirTemperatureZeroPoint 02 Mar 2005 - 18:42 - NEW JasonRay
Air Temperature Sensor Zero Point Check February 24, 2005 A zero point calibration was performed on two of the production air temperature sensor units. A 0.00°C water ...  
AncillaryPTCSInstrumentation 24 Jun 2008 - 21:17 - r1.18 ToddHunter
Ancillary PTCS Instrumentation This work requires time from Todd, JD, Jason, John Ford and Joe Brandt Related links: http://wiki.gb.nrao.edu/bin/view/Dynamic/DynamicProjectNotes ...  
AntennaCharacterization02Nov2007 14 Nov 2007 - 14:01 - r1.8 ToddHunter
Meeting to discuss tracking performance and future PTCS observing plans in this area Date: 02 Nov 2007, location: CV311/GB241 Attendees: CV: Todd, Fred, Jim, Paul ...  
AntennaCharacterizationAndCommissioning 05 Feb 2008 - 03:52 - r1.17 ToddHunter
Antenna Characterization and Commissioning project (2007-8) Project Description Coordinate execution of pointing runs, servo tests, etc. Analyze results Related projects ...  
AntennaCharacterizationAstridScripts 20 Aug 2007 - 22:28 - r1.7 ToddHunter
Astrid Scheduling Blocks for PTCS The scheduling blocks (SBs) are located in /home/groups/ptcs/obs/turtle. In some SBs there is a slight disconnect between the old ...  
AntennaCharacterizationComaAstigmatismSummer2004 13 Dec 2006 - 00:48 - r1.4 RichardPrestage
Coma and Astigmatism Measurements Summer 2004 TOC Observing Schedule: Tue 31st August 7pm 01:30am. Do preliminary tests of different scanning strategies, astigmatism ...  
AntennaCharacterizationDataBase 09 Dec 2006 - 17:38 - r1.29 RichardPrestage
Summary of Observing Runs The observing runs are partially analyzed and the data are dumped into several different CSV files with a naming convention shown below ...  
AntennaCharacterizationFall2006 19 Dec 2006 - 04:14 - r1.7 ToddHunter
Antenna / Astronomical Characterization Fall/Winter 2006 Overviews: PointingFocusDevelopmentFall2006 OOFDevelopmentFall2006 Specific Commissioning Task List: Figure ...  
AntennaCharacterizationQbandOctober2004 13 Dec 2006 - 01:05 - r1.5 RichardPrestage
Q-band Characterization October 2004 Objectives General Checkout (confirm computer controls, confirm optics/beam offsets, etc.) Determine the calibration: $T {\rm ...  
AntennaCharacterizationSpring2004 13 Dec 2006 - 01:04 - r1.17 RichardPrestage
Antenna Characterization Spring 2004 TOC Scope of Work Package The purpose of this work package is to co-ordinate and/or perform the work necessary to characterize ...  
AntennaCharacterizationSpring2004AnalysisActivity 13 Dec 2006 - 01:08 - r1.9 RichardPrestage
Antenna Characterization: Current Analyses, New Experiments and Commissioning Plans Spring 2004 The purpose of this page is to summarize ongoing analysis of existing ...  
AntennaCharacterizationSpring2005 13 Dec 2006 - 00:49 - r1.7 RichardPrestage
Astronomical Characterization and Improvements Spring 2005 This is intended to be the top-level page providing an overview, and links to work related to characterizing ...  
AntennaCharacterizationThermalCollimation 13 Dec 2006 - 01:06 - r1.3 RichardPrestage
Thermal effects on the collimation of the GBT Intro Daytime measurements of large scale aberrations present in the GBT optics using the OOF holography technique have ...  
AntennaCharacterizationTrackingPerformanceSpring2005 13 Dec 2006 - 00:49 - r1.5 RichardPrestage
Antenna Tracking Performance Spring 2005 The goal of this work is to characterize the antenna tracking performance for a range of astronomically useful scanning patterns ...  
AntennaInstrumentation 14 Jul 2008 - 16:55 - r1.30 ToddHunter
Primary Devices: TemperatureSensorSystem: Information about the Structural Temperature Sensors and the Antenna Characterization Manager. AccelerometerSystemDescription ...  
AntennaManagerUpgradesFall2003 09 Dec 2006 - 15:29 - r1.13 RichardPrestage
Antenna Manager Upgrades Fall 2003 Jump straight to: #RefPhilosophy Upgrade Philosophy #RefAapplications Potentially Affected Applications #RefInterfaces Interface ...  
ApproximateQDEquations 11 Dec 2007 - 19:23 - NEW ToddHunter
Explanation of equations in the QD Manager The QD Manager is described in http://wiki.gb.nrao.edu/bin/view/Software/ModificationRequest9C306 MR9C306 . It contains ...  
Apr2008TrackMap 22 Apr 2008 - 18:54 - r1.7 ToddHunter
Link to http://wiki.gb.nrao.edu/bin/view/PTCS/TPTCSPNT 080415 observing log Plots ATTACHURL /temps.pdf three ambient temperatures during the scans ATTACHURL /15apr2008xy ...  
AzimuthTrack 20 Dec 2006 - 01:09 - NEW ToddHunter
Attached below is a plot of the tilt of azimuth drive wheel 13 as it travels over (most of) the 48 diagonal splices. Data are from November 29, 2004 UT 19:40 to 23 ...  
BN2007Oct11 11 Oct 2007 - 18:19 - NEW ToddHunter
Date: Thu, 11 Oct 2007 14:18:52 0100 From: Bojan Nikolic To: Todd R. Hunter Cc: Fred Schwab , Bojan Nikolic Subject: Re: suggestion for a better fit Hi Fred Todd ...  
CenterRowActuatorError 10 Mar 2008 - 16:14 - NEW ToddHunter
Center row actuator error Fred discovered that the center row of 45 actuators never received the proper offset value from the photogrammetry results. The effect is ...  
CoDRPresentations 20 Sep 2003 - 20:11 - NEW RichardPrestage
PTCS Conceptual Design Review Presentations The presentations are available in three options from the table below: ppt Original Power Point pdf color Saved as a color ...  
CommissioningExperiments 01 Apr 2008 - 19:52 - r1.57 FrankGhigo
Commissioning Experiments classified by experiment This page contains the same information as CommissioningHistory, but with scans classified according to the purpose ...  
CommissioningHistory 16 Jul 2008 - 12:12 - r1.196 ToddHunter
Summary of PTCS Commissioning Runs The table contains the date, project directory and very high level comments on the run. Click on the project directory name to ...  
ConcentratorInformation 05 Dec 2003 - 16:38 - r1.2 JasonRay
Concentrator wiring diagram You might have to zoom in to read all the text D44002W001 Concentrator LAN Topology You might have to zoom in to read all the text ...  
ConcentratorPortConnections 12 Apr 2008 - 19:06 - r1.12 ToddHunter
These connections are correct as of 11/03/2004 GBTTS1 172.23.1.48 Mounted Outside Receiver Room PORT 1 Structural Temp Sensor #18 (VFA Tip) PORT 2 Quadrant Detector ...  
ConceptualDesignReview 20 Sep 2003 - 20:05 - NEW RichardPrestage
PTCS Conceptual Design Review Date: April 8-9 2003, Location: Green Bank External Reviewers: Peter Napier (NRAO Socorro, Chair) Patrick Wallace (Starlink/HMNAO, UK ...  
CurrentPerformanceFall2007 25 Apr 2008 - 16:29 - r1.9 ToddHunter
GBT Current Performance Fall 2007 Pointing and Focus Pointing Model PFM 5c was released on September 30, 2007. A detailed look at the pointing model can be found ...  
CurrentPerformanceSummer2006 09 Dec 2006 - 16:16 - r1.2 RichardPrestage
GBT Current Performance Summer 2006 Pointing and Focus The following table lists the current GBT pointing and focus performance. The current metrics consist of using ...  
DaisyScanCmdVelocities 10 Jun 2008 - 03:18 - r1.2 ToddHunter
Daisy scan velocity analysis Tim Weadon asked me what the lowest velocities we will be trying to follow during mapping scans (as opposed to sidereal tracking mode ...  
DaytimeOOFJan2006 02 Jul 2008 - 20:48 - r1.5 ToddHunter
Daytime OOF Holography results Experiment Ten hours of repeated Q-band pointing/focus scans followed by OOF holography maps on a sunny winter day. Except for the ...  
Dec2006 21 Dec 2006 - 07:06 - r1.3 ToddHunter
Plan for December 21, 2006 0. LST at start is about 05:30, finishing at 15:30 1. Test of new actuator zero offset file: Need to observe a quasar near transit near ...  
DifferenceInOOFDataFormats 16 Feb 2008 - 21:28 - NEW ToddHunter
Two different DCR FITS file formats for OOF maps Example of a recent file /home/gbtdata/TPAR 18/DCR/2008 01 08 07:03:19.fits data stored at 10Hz, 2 phases x .05 sec ...  
DynamicCorrectionsDeviceLogSpring2004 09 Dec 2006 - 17:40 - r1.28 RichardPrestage
This page is for tracking problems, and the attempts at resolving those problems, associated with Antenna Characterization and Dynamic Corrections. There is a seperate ...  
DynamicCorrectionsResultsNov2003 09 Dec 2006 - 16:49 - r1.7 RichardPrestage
Demonstration of pointing/focus temperature corrections Update 22nd November The test was executed completely successfully on November 20th. Dynamic focus and elevation ...  
DynamicScheduling 05 Mar 2007 - 17:38 - NEW DanaBalser
Dynamic Scheduling This page summarizes work on dynamic scheduling that impacts the PTCS. The dynamic scheduling projects notes can be found at: http://wiki.gb.nrao ...  
ELFSurfaceTalkSlide52 28 Aug 2007 - 15:19 - NEW ToddHunter
From: Bruce Dean mailto:bruce.dean@nasa.gov Sent: Monday, August 27, 2007 11:08 PM To: Bojan Nikolic Cc: Richard Prestage Subject: GBT Modeling Question Dear Bojan ...  
EfficiencyMeasurementsSpring2004 09 Dec 2006 - 15:29 - r1.4 RichardPrestage
Efficiency Measurements Spring 2004 We now have preliminary measurements which demonstrate that correcting the surface via zernike polynomials derived from OOF or ...  
EmsAlgorithmIssues 09 Dec 2006 - 16:37 - r1.2 RichardPrestage
Calculation of zero phase standard deviation and leak pahse standard deviation don't take into account correlations in the cartesian coordinates. The mean phases ...  
EmsBugs 02 Sep 2003 - 22:04 - r1.3 PaulMarganian
-- Main.PaulMarganian 15 Aug 2003 EMS Bugs: some bugs are covered in the EmsInstallation#InstallationTroubleShooting EMS Installation Trouble Shooting topic. null ...  
EmsCandidateRetroListSummer2003 09 Dec 2006 - 17:27 - r1.2 RichardPrestage
Candidate Retro List for NCP tracking experiment Email from Dave Parker Mon, 25 Aug 2003 23:08:21 0400 From: David H. Parker To: Richard Prestage , Dave Parker , ...  
EmsEngineeringMeasurementSystem 09 Dec 2006 - 16:43 - r1.8 RichardPrestage
Engineering Measurement System http://www.gb.nrao.edu/~pmargani/EMSPoster.pdf EMS Poster : Poster from ADASS 2003 explains the EMS EmsInstallation : How to install ...  
EmsExperimentNotes09052003 09 Dec 2006 - 17:27 - r1.5 RichardPrestage
-- 6 Sept 2003 (KTC) ZY112 az servo failure before experiment start... Results in loss of only one location trilateration: 11460L Loss of LRF signals due to fog/dew ...  
EmsInstallation 03 Oct 2003 - 20:09 - r1.10 PaulMarganian
-- Main.PaulMarganian 15 Aug 2003 TOC EMS Installation #InstallationComponents EMS Components The Engineering Measurement System (EMS) actually is composed of several ...  
EmsLRFPhaseEstimation 09 Dec 2006 - 16:35 - r1.4 RichardPrestage
See attachment "PhaseEstimation.pdf" for the algorithm used to estimate return signal phase from the ADC IF signals. See attachment "roc.pdf" for plots of phase noise ...  
EmsLaserRangefinderStatusLog 09 Dec 2006 - 16:39 - r1.7 RichardPrestage
19 Jun 2003: 8 LRFs in service (from EMS progress mtg notes). 1 Jul 2003: 6 LRFs in service for trilateration data collection experiment. 28 Jul 2003: 9 LRFs in service ...  
EmsLaserRangefinders 09 Dec 2006 - 16:39 - r1.5 RichardPrestage
Laser Rangefinders EmsLRFPhaseEstimation EmsLaserRangefinderStatusLog Main.RichardPrestage 17 Aug 2003  
EmsMultilaterationErrorSensitivity 09 Dec 2006 - 16:42 - r1.3 RichardPrestage
See PTCS/PN 22 Main.KimConstantikes 01 Sep 2003  
EmsSimultaneousTrilaterationAstronomy 09 Dec 2006 - 17:27 - r1.13 RichardPrestage
Simultaneous Rangefinder-Trilateration/Astronomical measurements of the North Celestial pole (or alternate fixed (az,el) position). Goal of the experiment: Perform ...  
EmsSoapInterface 09 Dec 2006 - 16:45 - r1.3 RichardPrestage
10/1/03 (KTC) TOC EMS Interface to the M C System using SOAP Introduction We have created an interface between the M C system and Matlab using SOAP servers and clients ...  
EmsToDo 09 Dec 2006 - 16:38 - r1.2 RichardPrestage
Get CVS snapshot of current EMS configuration/code. Include LRF data reduction and multilateration Matlab code. (KTC 10/1/03) Put Wabooz on CVS (KTC 10/1/03). Main ...  
FeedArmVibration 24 Jun 2008 - 05:24 - r1.10 ToddHunter
1. Visible effects of feed arm vibration During a focus scan at Ka band on 3c273 (~40 Jy), a resonance of 0.85 Hz was easily seen in the CCB data. The depth of the ...  
FinalSpecDevApp 06 Feb 2008 - 18:56 - NEW MartyBloss
-- Main.MartyBloss 06 Feb 2008 Final Specifications Development and Approval This team is responsible for editing the document above for clarity, unity, and brevity ...  
FluxCalibrationNotesAugust2007 04 Sep 2007 - 20:22 - r1.8 FrankGhigo
August 2007 : Using pointing data sets for monitoring fluxes ( back to: InformationForProjectTeam) Introduction The many pointing calibration runs done at X-band ...  
FluxCalibrationandMonitoring 08 May 2008 - 00:28 - r1.4 ToddHunter
Various topics on monitoring of flux densities of calibration sources. FluxCalibrationNotesAugust2007 GainAnalysis7October2007 KA-band CCB analysis (October 2007 ...  
FocusPerformanceNotesMay07 14 May 2007 - 19:37 - r1.8 FrankGhigo
Focus Performance Notes May 2007 Introduction The subreflector focus performance seems to have become degraded in recent months, as described by Kim in a message ...  
FocusTrackingUncertainty 09 Dec 2006 - 17:06 - r1.4 RichardPrestage
Focus Tracking Uncertainty The focusSubreflector procedure drives the sub-reflector in the axial Y direction through a specified range at a given rate. The plots ...  
FocusUncertainty 09 Dec 2006 - 17:07 - r1.5 RichardPrestage
Focus Uncertainty We estimate the uncertainty in fitting Gaussian functions to the data. In particular, the uncertainty in the fitted Gaussian parameters: height ...  
FormalDocumentation 24 Apr 2007 - 13:04 - r1.12 JohnFord
PTCS Formal Documentation PTCS documentation (apart from these wiki pages) falls into a number of different categories: External Project Review Meetings InProgressReview ...  
FrictionCompensation 24 Aug 2007 - 18:44 - r1.4 JohnFord
Friction Compensation Project Justification The GBT servo system suffers from velocity tracking errors at low velocities. One cause of this has been identified as ...  
GBTLogWindDataSummarizer 07 Nov 2007 - 21:48 - r1.2 FrankGhigo
gbtwind summarize GBT wind data from GBT Logs. This describes program "gbtwind" which lists wind speed statistics from the GBT weather station logs. gbtwind lists ...  
GBTServoReplacementProjectTeamOrganization 26 Feb 2008 - 19:22 - r1.3 MartyBloss
Servo Replacement Team Organization This is a rather large team of people, and there are several different tracks of effort underway. It is necessary that everyone ...  
GBTServoReplacementSRS 04 Feb 2008 - 17:58 - NEW JohnFord
Servo Replacement System Requirements Specification This document is intended to form the specification for implementation of the servo system. We will in due course ...  
GBTServoReplacementSRSWorkingDocument 04 Feb 2008 - 21:08 - NEW JohnFord
GBTServoReplacementSRSWebOrder? SECTION0 System Requirements Specification SECTION1 Purpose SECTION1 System Scope SECTION1 Definitions, Acronyms, and Abbreviations ...  
GBTServoReplacementScopeOfWork 04 Feb 2008 - 18:07 - r1.3 MartyBloss
Green Bank Telescope Servo System Design Request for Proposal Main.JohnFord 09 Aug 2007  
GDAQADuC834Passband 28 Feb 2008 - 22:01 - r1.4 ToddHunter
GDAQ http://www.analog.com/en/prod/0,,762 0 ADUC834,00.html ADuC834 Microconverter passband measurement 19 Feb 2008 Jason Todd http://www.home.agilent.com/agilent ...  
GainAnalysis7October2007 08 Nov 2007 - 16:02 - r1.7 FrankGhigo
TPTCSPNT 071007 Gain Analysis 26-40 GHz with the CCB. Introduction Several known flux density calibrators were observed during a PTCS run on 7-8 October 2007, using ...  
GeneralSystemDescription 14 Apr 2008 - 19:36 - r1.56 MartyBloss
General System Description TOC 2.1 System Context 2.1.1 The Green Bank Telescope (GBT) has met or exceeded all of the design goals set forth before its construction ...  
GlishReduceFocusErrors 10 May 2007 - 20:58 - NEW RonGrider
Incorrect Focus Scan Processing in glish DCR.G There is a combination of one error and one questionable implementation decision in how the glish DCR.G software module ...  
GroupMeetingMinutesMarch2007 09 Mar 2007 - 01:00 - r1.3 ToddHunter
PTCS meeting: 06 March 2007 Attendees at start: GB: Todd, Ron G, Joe, Steve, Dennis, Bob, Ron M., Dana, Karen, Frank, John; CV: Brian, Fred; telephone: Kim 1 Dana ...  
GroupMeetings2007 06 Mar 2007 - 22:35 - r1.3 ToddHunter
PTCS project group meeting agenda 6 March 2007 GB137/CV311 (304)456-2239 GroupMeetingMinutesMarch2007 Meeting minutes 1. Instruments for dynamic scheduling (Dana ...  
HalfPowerData 09 Dec 2006 - 15:25 - r1.3 RichardPrestage
Half Power Data Sets Half-power tracking data consists of tracking the half-power point of a pointing source. Pointing errors will show up as fluctuations in the ...  
HardwareDesign 06 Feb 2008 - 20:06 - r1.2 MartyBloss
-- Main.MartyBloss 06 Feb 2008 Hardware Design This team will design the hardware to implement the system design that satisfies the specification. TOC Members Tim ...  
HoloRxAtOpticalCameraMount 19 Dec 2007 - 22:51 - r1.6 ToddHunter
Finding a new home for the holography reference receiver 19 Dec 2007 (Update) On November 30, AccelerometerSystemDescription Accelerometer 4 was installed at the ...  
HolographyHardwareDatasheets 14 Jul 2008 - 14:15 - r1.3 ToddHunter
Page to hold datasheets for the traditional holography system Main.ToddHunter 19 Jun 2008  
HolographyHistory 01 Apr 2008 - 20:54 - r1.2 ToddHunter
Background on traditional holography experience at GBT (from Ron Maddalena) 1 Pixel separation is lambda/D for traditional holography, vs. lambda/2D for OOF. See ...  
HolographyIdeaREH 09 Jun 2008 - 19:17 - NEW ToddHunter
Idea from Richard Hills (2007-Dec-07) Place the existing reference receiver in the middle of the dish looking through a hole in a panel. Mix the output of the LNB ...  
HolographyLabTests 12 Jun 2007 - 23:08 - r1.7 ToddHunter
Proposed Lab tests of holography receiver (Summer 2007) Introduction Existing backend is described in http://www.gb.nrao.edu/GBT/memos/memo101.html GBT Memo 101 by ...  
HolographyMap18Feb2004map1 20 Jun 2008 - 14:50 - r1.2 ToddHunter
Comparison of processed holography map1 of 18Feb2004 with Zernike pattern expected Zernike pattern for Z 12 5.0mm: ( ATTACHURL /bump z12 18feb2004.png larger .png ...  
HolographyMeetingNov2007 14 Dec 2007 - 20:07 - NEW ToddHunter
Holography meeting Fri Nov 16, 2007 (following the weekly Commissioning meeting) Todd in CV; Steve, Bob, Dennis, Pete, Ron M. in GB Minutes Location of main horn ...  
HolographyMeetingOct2007 22 Oct 2007 - 17:14 - r1.4 ToddHunter
Traditional Holography Project Meeting 12 Oct 2007 Time: 9AM Location: GB137/CV311 Attendees: Todd, Steve, John, Frank, Joe, Dennis, Melinda, Frank, Ron G., Ron ...  
HolographySimulations 04 Jun 2007 - 14:53 - NEW ToddHunter
Holography simulations and lunar scan analysis Initial work is in http://wwwlocal.gb.nrao.edu/ptcs/ptcspn/ptcspn51/ptcspn51.pdf PTCS Project Note 51 from TPTCSOOF ...  
HolographySystem 16 Jul 2008 - 19:49 - r1.54 ToddHunter
Traditional Holography System TraditionalHolographyMeetings Previous meetings Next meeting: TBD Major milestones for Fall 2007 Summer 2008 0 Compile http://www.gb ...  
HowtoCheckInclinometerFiles 04 Sep 2007 - 04:54 - r1.2 ToddHunter
How to check whether inclinometer data files are being written Inclinometer data is stored in FITS files in the gbtlogs area. To confirm that these files are being ...  
HowtoPlotInclinometerData 30 Aug 2007 - 20:47 - NEW ToddHunter
How to plot inclinometer data During a pointing run, it is important that the inclinometer data be recorded and that it makes sense. There are four directories: ...  
InProgressReview 14 Jan 2004 - 13:28 - r1.9 RichardPrestage
PTCS In-Progress Review Date: December 3-4 2003, Location: Green Bank External Reviewers: Peter Napier (NRAO Socorro) Patrick Wallace (Starlink/HMNAO, UK) David Woody ...  
InProgressReviewPrep 26 Apr 2004 - 12:42 - r1.15 RichardPrestage
In Progress Review Preparation The in-progress review will be held in Green Bank on 3/4 December. This page serves as a location for project team members to organize ...  
InclinometerPlateCalibration 09 Dec 2006 - 17:14 - r1.4 RichardPrestage
When the two inclinometer sets were installed on the GBT elevation bearing castings, there was no good way to perfectly align them with respect to the elevation axle ...  
InclinometerStatusAndLog 20 Jun 2007 - 11:59 - r1.4 JasonRay
06 July 2004: Performed inclinometer plate offset measurement using the theodolite shooting to the water tower. (JMR, JDN) 18 June 2007: Replaced Y2 inclinometer addr6 ...  
InclinometerSystemDescription 18 Apr 2008 - 16:07 - r1.12 ToddHunter
Inclinometer System Description There are two sets of 2-axis accelerometers installed on the GBT, one on each EL bearing casting. InclinometerOne Mounted on the left ...  
InclinometerTrackMapReduction 24 Sep 2007 - 00:20 - r1.7 RichardPrestage
Reducing inclinometer data into a track map This process should probably be streamlined at some point. The coefficients are stored in kernel.0.1hz (sent to me by ...  
InclinometersAzTrack 17 Apr 2008 - 18:22 - r1.9 ToddHunter
Inclinometers and the Azimuth track Documentation http://wiki.gb.nrao.edu/bin/view/Main/TrackMapProcessingDec2007 Instructions for track map data processing Results ...  
InclinometersWithCCB 05 Nov 2007 - 00:03 - r1.4 ToddHunter
Interesting correlation between CCB scans and inclinometer data While examining some Ka band CCB data taken in OTFNOD scan mode, I noticed an interesting correlation ...  
InformationForAstronomers 13 Nov 2007 - 22:18 - r1.17 ToddHunter
Information For Astronomers PointingFocus Pointing and Focus ActiveSurface Active Surface CurrentPerformanceSummer2006 Performance as of Summer 2006 CurrentPerformanceFall2007 ...  
InformationForProjectTeam 30 Jun 2008 - 14:03 - r1.54 MartyBloss
Information for the PTCS Project Team This page contains links to active work packages, commissioning experiments, instrumentation documentation, and so on. It is ...  
InterlockUpgrade 18 Jun 2007 - 13:46 - r1.3 TimWeadon
Interlock Upgrade Introduction The Interlock Upgrade is meant to improve the monitoring ability of operations and engineering of the telescope's interlock systems ...  
InternalProgressMeetings 29 Sep 2003 - 16:18 - r1.2 RichardPrestage
PTCS Internal Progress Meetings Powerpoint Version PDF Version ATTACHURL /Meet20030929.ppt 2003 September 29 ATTACHURL /Meet20030929.pdf 2003 September 29 ATTACHURL ...  
IprPresentations 02 Dec 2003 - 23:55 - r1.6 RichardPrestage
PTCS In Progress Review Presentations The presentations will be available in three options from the table below: ppt Original Power Point pdf color Saved as a color ...  
Jan2008TrackDetails 17 Apr 2008 - 18:19 - r1.4 ToddHunter
Detailed comparison of track scans (Sep 2007 Jan 2008) January 31, 2008 Inclinometer temperature means (forward backward): X1: 5.398 3.261 X2: 4.449 3.136 Y1: 4 ...  
Jan2008TrackMap 10 May 2008 - 00:28 - r1.5 ToddHunter
Track map results from 31 Jan 2008 Link to http://wiki.gb.nrao.edu/bin/view/PTCS/TPTCSPNT 080131 Observing log ATTACHURL /xavg3tracks.pdf Comparison of Sep07, Dec07 ...  
JohnScratchFile 25 Mar 2008 - 19:11 - NEW JohnFord
3.5.3 Az/El Rate Loop Requirements The existing GBT servo system uses a cascaded position-velocity loop servo system. It is not clear that the new system will contain ...  
KnownIssuesWithInstruments 12 Feb 2007 - 15:01 - r1.2 KimConstantikes
Accelerometers Glitches in Accel1 x channel, 1/11/2007 logs ~ 0.2 Hz component in all that does not correlate to anything... Temperature has glitches Calibrations ...  
LRFSystem 05 Mar 2007 - 15:28 - r1.4 StevenWhite
LRF Systems Introduction THe new LRF system under development promises a lightweight optics package that can be integrated with an electronics package via fibre optics ...  
LoralTechnicalMemos 20 Jun 2008 - 20:07 - NEW ToddHunter
GBT Technical memos Loral Number title link 14 Azimuth Encoder Drive Analysis (1992-03-27) ATTACHURL /GBT TM14.pdf pdf 19 Equations of Motion of Subreflector Positioner ...  
LyngsatBeaconList 19 Jul 2008 - 02:37 - r1.6 ToddHunter
Ku band beacon list culled from http://www.lyngsat.com Lyngsat on 27 June 2008 (beacon strengths from http://www.geo-orbit.org geo-orbit.org , and http://www.satsig ...  
MidTrackRefurb 01 Aug 2007 - 00:49 - r1.4 ToddHunter
Move from azimuth 229.44 to 192.44 at the midway point of the track refurbishment It occurred on 29 June 2007 at 12:25:46 to 12:37:47 UT (MJD: 54280.517894 to 54280 ...  
ModificationRequest03C042007 29 May 2008 - 19:25 - r1.30 TimWeadon
GBT Servo CCU to PLC Modbus Interface Modification Request #03 (C04 2007) TOC 1. Introduction Presently the CCU software communicates with antiquated hardware wire ...  
MustangEngSpecs 23 Oct 2007 - 17:03 - r1.7 RichardPrestage
PTCS Scientific Specifications for Penn Array Demonstration Science Introduction This page lays out PTCS scientific requirements for fall/winter 2005/2006 commissioning ...  
MustangOofAgbt08a05608 24 Apr 2008 - 05:14 - r1.4 ToddHunter
MUSTANG Science run 8 OOF Data: runs 82/83/84 and 85/86/87. Weather was clear and very calm. Here is the http://wiki.gb.nrao.edu/bin/view/Pennarray/RunEight log file ...  
NaN 09 Feb 2007 - 00:36 - NEW ToddHunter
Not a Number! These values are seen in the inclinometer data stream. According to Paul Marganian: ...NaNs are placed in the data when a 'sample', a whole row in the ...  
NaNs 08 Feb 2007 - 22:20 - NEW KimConstantikes
Not a Number! Main.KimConstantikes 08 Feb 2007  
NewGBTServoSystem 28 Apr 2008 - 12:21 - r1.19 MartyBloss
New GBT Servo System Project Justification The GBT servo system was designed to function for stepping from once source to another, and tracking. It has limited capability ...  
NewGBTServoSystemBrainstormingPage 25 Oct 2007 - 11:10 - r1.6 JoeBrandt
New Servo System Brainstorming Page TOC OCU/OCT Operator Interfaces: The OCU/OCT (from here on OCU) interface with the CCU and SCU over serial interfaces. When we ...  
NewPointingAnalysisPackage 09 Jun 2008 - 21:34 - r1.43 ToddHunter
New Pointing Model and Pointing Analysis Package Meeting info and agenda: Next meeting: TBD call-in number 304-456-2239 (GB137) PastMeetings Past meetings Goals: ...  
NotesKimTodd23Oct2007 23 Oct 2007 - 17:49 - NEW ToddHunter
Telephone conversation notes Parties: Kim Todd Time: 23-Oct-2007, 10-11AM EDT Topic: Transfer of knowledge of pointing model fitting There will be three steps in ...  
OFFWithMustang2008Jun06MeetingFollowup 18 Jul 2008 - 11:50 - r1.12 ToddHunter
Email followup thread from the June 6, 2008 telecon Date: Fri, 27 Jun 2008 14:25:52 0100 From: Bojan Nikolic Hi, I'm sorry for the delay, but I'm only picking up ...  
OOF20050126 09 Dec 2006 - 17:54 - r1.4 RichardPrestage
Plan and log for observing 26th January 2005 Outline X-band observations on OOFHolographyXBandResultsSpring2005 indicated a large `z8' coma term. Want to test whether ...  
OOF20050207 17 Feb 2005 - 19:34 - r1.4 BojanNikolic
Data plots etc will go here for Monday Feb 7th will go here Plans for OOF work for Monday Feb 7th 8pm Tuesday Feb 8th 8am EST. This plan is for twelve hours of overnight ...  
OOFCalibratorSourcesAndSchedules 09 Dec 2006 - 16:50 - r1.3 RichardPrestage
OOF sources and Schedules The best sources for Ka/Q-band continuum antenna tests appear in the table below. 3C286 is the primary flux calibrator Saturn is up from ...  
OOFConfirmationNovember2006 31 Mar 2008 - 14:45 - r1.13 ToddHunter
November 2006 OOF Confirmation Experiment We need to confirm that the 2005 OOF gravity model(s) are correct. This page is for planning the experiment, to be performed ...  
OOFCoordsys 13 Jan 2005 - 00:39 - NEW RichardPrestage
Coordinate system of the OOF software This page (will) describe the `natural' coordinate system of the OOF software and how it is related to the coordinate systems ...  
OOFDevelopmentFall2006 13 Dec 2006 - 00:35 - r1.9 RichardPrestage
Continued Out-of-focus (OOF) Holography Development Winter 2006 / 2007 TOC OOFConfirmationNovember2006 November 2006 OOF Confirmation Experiment Spring 2006 Status ...  
OOFFitConv 08 May 2008 - 21:01 - r1.8 ToddHunter
Sample execution of ooffitconv.MkGBTSfcFile() input file /users/groups/ptcs/oof-tng/TPAR 18/mustang/oofout/s56c67-001/z5/fitpars.fits (a Mustang scan) ooffitconv ...  
OOFFormalErrors 17 Feb 2005 - 19:20 - r1.2 BojanNikolic
Calculating the accuracy of surface maps derived the OOF technique The OOF software currently uses the PDA Levenberg-Marquardt minimisation algorithm with finite ...  
OOFGBTAstigmatism 09 Dec 2006 - 16:27 - r1.2 RichardPrestage
Transient astigmatism in the GBT optics Introduction Results from TPTCSOOF 050411 Main.BojanNikolic 11 May 2005 scan 30 non offset phase: scan 30 observed in-focus ...  
OOFHolography 14 Jul 2008 - 13:37 - r1.70 ToddHunter
Out-Of-Focus Holography Next meeting: TBD Past meetings: OOFWithMustang2008Jun06Meeting Jun 06, 2008 ( http://wiki.gb.nrao.edu/bin/view/PTCS/OFFWithMustang2008Jun06MeetingFollowup ...  
OOFHolographyInstructions 14 Jul 2008 - 15:22 - r1.37 ToddHunter
Installing and Using the OOF Holography Software (2008) Unpacking and compiling The latest version of code including Mustang processing (version 1.1) was distributed ...  
OOFHolographyKa2008 23 Apr 2008 - 18:34 - r1.8 ToddHunter
OOF Holography with Ka/CCB Most recent maps December 2006: TPTCSOOF 061221 February 2008: TPTCSOOF 080216 OOFHolographyInstructions current software instructions ...  
OOFHolographyProject 09 Dec 2007 - 19:15 - r1.4 ToddHunter
Out-of-Focus Holography Project OOFHolographyProjectPlan Project planning page OOFHolography Current activities (including meeting minutes) http://adsabs.harvard ...  
OOFHolographyProjectPlan 24 Apr 2008 - 05:35 - r1.10 ToddHunter
Out-of-Focus Holography Project Charter The Out-of-Focus (OOF) holography technique has enabled the measurement of the repeatable large-scale surface deformations ...  
OOFHolographySystem 22 Mar 2007 - 18:30 - r1.4 ToddHunter
OOF Holography System Bring someone up to speed on OOF models; start incorporating new techniques including JWST Wavefront Sensing and Controls Group collaboration ...  
OOFHolographyXBandResultsSpring2005 09 Dec 2006 - 17:54 - r1.5 RichardPrestage
Preliminary results from analysis of X-band data taken on 17 Jan 2005 The aim of this experiment was to : (i) test the daisy petal scanning routines; and, (ii) to ...  
OOFHolographyZernikePolys 30 Apr 2008 - 22:58 - r1.7 ToddHunter
Zernike Table TABLE{ cellpadding "3"} BN's label n l picture GBT MC label z0 0 0 picture z1 z1 1 1 picture z3 z2 1 1 picture z2 z3 2 2 picture z6 z4 2 0 picture z5 ...  
OOFInfocusBeamAnalysisSpring2005 09 Dec 2006 - 16:41 - r1.2 RichardPrestage
In-focus beam analysis As part of each OOF set we make an in-focus beam map. We have also taken a number of separate in-focus beam maps. Some analysis of these.. ...  
OOFInputFormat 22 Jun 2005 - 06:25 - NEW BojanNikolic
Description of format of input data to OOF software The input to the OOF software is a single FITS file with multiple data extensions: (i) The mandatory primary header ...  
OOFKa20050131 09 Dec 2006 - 16:31 - r1.4 RichardPrestage
Notes on Ka observing on 31 Jan 2005 Think about A lot of structure remains in the in-focus maps at about 25 level. Need to investigate this... Allowing for fitting ...  
OOFKaAnalysisSpring2005 09 Dec 2006 - 16:31 - r1.2 RichardPrestage
Ka-band analysis Additional logs See OOFKa20050131 Main.BojanNikolic 01 Feb 2005  
OOFKaReductionSpring2005 09 Dec 2006 - 16:31 - r1.7 RichardPrestage
Ka-band data reduction Removal of atmospheric emission Differencing the two beams does not appear to give very good rejection of atmosphere in admittedly poor weather ...  
OOFKaStrategySpring2005 09 Dec 2006 - 16:32 - r1.4 RichardPrestage
Ka-band observing strategy for OOF measurements There seems to be strong coupling between the fitted defocus, spherical aberrations and edge taper. Therefore, keeping ...  
OOFMapsSpring2004 13 Dec 2006 - 01:04 - r1.12 RichardPrestage
Out-of-focus Holography Results Summary to Spring 2004 TOC Observation Summary Select a column heading to sort by that column; select again to reverse sort Obs date ...  
OOFMustBaseline 04 Apr 2008 - 10:56 - NEW BojanNikolic
Mustang, OOF and baselines Polynomial baseline, exclude 60 arcsecs: Polynomial baseline, exclude 30 arcsecs: Common mode removal: Trimming first/last 5 seconds common ...  
OOFMustangDec2007Mars 01 Feb 2008 - 03:32 - NEW ToddHunter
OOF maps of Mars with Mustang These were taken in bad weather, for test purposes only (data format, row spacing, etc.). Images processed and created by Brian. mars ...  
OOFObservatrionsSpring2003 09 Dec 2006 - 17:36 - r1.2 RichardPrestage
THOLOG OOF This page contains a copy of the file /home/groups/ptcs/obs/logs/THOLOG OOF/summary.txt, which contains details of the OOF observations made during April ...  
OOFOutputs 28 Apr 2008 - 14:43 - r1.5 ToddHunter
Description of outputs produced by the OOF Top level directory is /home/groups/ptcs/oof/analysis, with results then in 0317 for that night, and surfacemodel v1 for ...  
OOFRepeatability 21 Feb 2008 - 02:23 - r1.2 ToddHunter
OOF Repeatability During project TPTCSOOF 050911 we obtained a sequence OOF maps on a bright source (2253+1608) while it was transiting. These maps were therefore ...  
OOFResults2005 07 Apr 2005 - 15:37 - r1.6 BojanNikolic
Results of OOF data reduction for 2005 data (selected) (note: WRMS stands for weighted root-mean-square after taking off pointing and classical defocus) Project Scan ...  
OOFResults20050410 30 Apr 2008 - 18:46 - r1.2 ToddHunter
Results of OOF analysis for 10 April 2005 ( TPTCSOOF 050410 ) Scan # Elevation Applied Corrections WRMS (as measured) WRMS (offset) Eta LS Eta LS w/corrections 23 ...  
OOFResults20050411 30 Apr 2008 - 18:44 - r1.6 ToddHunter
OOF analysis for TPTCSOOF 050411 Results from the OOF analysis: Scan # #EtaLSSZOFF Eta LSS (ZOFF) Eta LSS (ZON) 30 0.44 0.58 57 0.37 0.46 72 0.56 0.74 99 0.64 0.8 ...  
OOFSoftStatus 10 Aug 2005 - 15:45 - r1.13 BojanNikolic
OOF Software status and development Compilation / run time issues Starlink2004 (contains SLALIB) seems to be compiled with gcc 2.95.xx; not possible to link to this ...  
OOFSubPhase 13 May 2005 - 20:24 - r1.2 BojanNikolic
Phase changes due to motion of sub-reflector Radial defocus This was tested on TPTCSOOF 050310 scans 6ff. It was found that the expression we have for radial defocus ...  
OOFSummaryFall2005 21 Feb 2008 - 02:32 - r1.7 ToddHunter
OOF Summary for Winter 2005/2006 RED TPTCSOOF 050910 ENDCOLOR Validate OOF holography from Spring 2005. RED TPTCSOOF 050911 ENDCOLOR OOF holography at high elevations ...  
OOFSummarySpring2005 09 Dec 2006 - 17:52 - r1.27 RichardPrestage
OOF Summary for Spring 2005 RED TPTCSRMP 050115 ENDCOLOR Q-band observations to evaluate the performance of OOF holography based on Q-band spectral line OOF from ...  
OOFSurfaceMeasurementsSpring2004 13 Dec 2006 - 01:06 - r1.7 RichardPrestage
Surface Measurements The intent of this page is to keep track of work required up to and through our February campaign of surface measurements. TOC Objectives In ...  
OOFThoughtsSpring2005 09 Dec 2006 - 16:57 - r1.3 RichardPrestage
OOF Thoughts Spring 2005 What do want? measure the surface at the rigging angle with no thermal gradient to improve efficiency at rigging angle measure the surface ...  
OOFWithMustang2007Dec07Meeting 04 Jan 2008 - 15:36 - r1.6 ToddHunter
Meeting on OOF with Mustang Date/Time: Dec 7, 2007 at 9-10AM EST in GB241 Attendees: Todd, Frank, Simon, Brian, Richard, Ron G., Bojan (on phone from Cambridge) Minutes ...  
OOFWithMustang