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Informal Workshop on Out-of-Focus Holography and Phase Retrieval Techniques

Logistics

• Date: Tues 25 Sep 2007 - Thu 27 Sep 2007
• Location: Green Bank, WV, USA
• Venue: Auditorium
• Lodging: contact Becky Warner (bwarner@nrao.edu) with your arrival and departure times. (Out-of-state visitors may wish to arrive Monday evening.)

Attendees

• David Aronstein
• Bruce Dean
• Simon Dicker
• Frank Ghigo
• Richard Lyon (via telecon)
• Brian Mason (via telecon in CV Wed PM/Thurs?)
• Bojan Nikolic
• Richard Prestage
• Gopal Narayanan
• Fred Schwab
• Scott Smith
• Todd Hunter

Agenda

• Tuesday, 25 September
  • MORNING: Introduction and review of phase-retrieval holography
    • 8:00- 9:00: Breakfast in cafeteria
    • 9:00- 9:45: OOF Holography: The Basics (Bojan Nikolic)
    • 9:45-10:30: OOF Holography: Application at the Green Bank Telescope (Bojan Nikolic)
    • 10:30-10:45: Coffee break
    • 10:45-11:30: Status on Iterative Transform Phase Retrieval applied to the GBT Data (Bruce Dean)
    • 11:30-12:15: Phase Retrieval Based Wavefront Sensing for the GBT (Rick Lyon)
    • 12:15-01:15: Lunch
  • AFTERNOON: Examination of convergence processes
    • 01:15-02:15: demonstration of real GBT data (Bojan Nikolic)
    • 02:15-03:15: demonstration by Bruce
    • 03:15-03:30: Coffee break
    • 03:30-05:15: Discussion of goals for Wednesday morning's work period
• Wednesday, 26 September
  • MORNING: Work with laptops
    • 09:00-12:00: Processing and analysis of GBT data, consultations between groups
    • 12:00-01:00: Lunch
  • AFTERNOON: Current issues and future algorithms
    • 01:00-02:30: Comparison of results on GBT data
    • 02:30-03:15: Topics in Diffraction Modeling (David Aronstein)
    • 03:15-03:30: Break
    • 03:30-04:15: Phase Retrieval on Specialized Computing Hardware (Scott Smith)
    • 04:15-05:15: Open discussion on future algorithms and phase diversity methods
      1. Multi-color techniques (Ka receiver, 4 bands in the 26-40 GHz range)
      2. Alternative scanning techniques (daisy petal vs. regular grid)
      3. Alternative phase diversity methods (besides de-focus)
• Thursday, 27 September
  • MORNING: 90 GHz OOF
    • 08:30-09:30: Introduction to Mustang bolometer array (S. Dicker)
    • 09:30-10:45: Discussion of Mustang optics design and implications for OOF holography (vignetting, multi-pixel info): brainstorming session
    • 10:45-11:00: Break / GBT tour (11-12)
    • 11:00-01:15: Traditional holography talks (during JWST telecon?)
      • Plans for LMT Holography by G. Narayanan
      • Holography simulations for the GBT by F. Schwab
    • 01:15-02:00: Lunch
  • AFTERNOON: Simulations/Other topics
    • 02:00-04:00 Further discussions of Mustang optics

-- ToddHunter - 20 Sep 2007

Attachment:	Action:	Size:	Date:	Who:	Comment:
gopal.ppt	action	6017536	01 Oct 2007 - 15:52	ToddHunter	Gopal Narayan's talk
Simons_talk.ppt	action	3615232	01 Oct 2007 - 15:53	ToddHunter	Simon Dicker's talk
GBWork_Basic.pdf	action	2551884	01 Oct 2007 - 17:03	ToddHunter	Bojan's introductory talk
GBWork_gbt.pdf	action	1563293	01 Oct 2007 - 17:04	ToddHunter	Bojan's talk on GBT data
rlyon_GBT_OOF_09.25.07.pdf	action	12343974	01 Oct 2007 - 18:27	ToddHunter	Rick Lyon's talk
schwabtalk.pdf	action	2032744	02 Oct 2007 - 19:36	ToddHunter	Fred Schwab's talk on holography simulations
2007BruceGBTIntroductiontoPhaseRetrieval.pdf	action	4713727	29 Nov 2007 - 20:55	ToddHunter	Bruce Dean's talk
JSS_GBT_20070924.pdf	action	4397638	01 Oct 2007 - 18:16	ToddHunter	Scott Smith's talk