April 2-6, 2007 LGS observing run

Safety documents

• FAA documents:
  • FAA letter of non-objection (0-45 deg. zenith angle).
  • Securitas spotters are scheduled to be on site 19:30-05:40 PST.
• US-STRATCOM documents:
  • Laser Clearing House Reports Handbook
  • 4/3/07 UT P/A request: no closures.
  • 4/4/07 UT P/A request: no closures.
  • 4/5/07 UT P/A request: no closures.
  • 4/6/07 UT P/A request: no closures.
  • 4/7/07 UT P/A request: 1SPCS unable to process P/A request.
  • Laser Summary Report: Sent 10:19 4/10/07.

Target lists and finder charts

• 4/3/07 UT LGS target list
• 4/4/07 UT LGS target list
• 4/5/07 UT LGS target list (engineering targets only)
• 4/6/07 UT LGS target list (engineering targets only)
• 4/7/07 UT LGS target list (engineering targets only)

Schedules

• Personnel Schedule: v2 (3/21)
• Engineering Schedule:
  • v1.0 (3/21/07): pdf, xls
  • v1.1 (3/27/07): pdf, xls
  • v2.0 (4/3/07): pdf, xls

Test Plans

Please post your test plans on the Test Plan Library page, and add a link below.

• BTO alignment (v2.0): doc, pdf
• NGS Checkout (v3.1): doc, pdf
• Laser Acquisition (v5.1): doc, pdf
• LGS target acquisition (v3.4): doc, pdf

• BTO Setup: doc, pdf
• BTO Shutdown: doc, pdf
• Acquisition camera platescale calibration: doc, pdf
• AO system internal focus: doc, pdf
• AO bench setup and checkout: doc, pdf
• AO Optimization on the laser at zenith: doc, pdf
• LOWFS field curvature: doc
• Low-order loop optimization: doc, pdf

Night logs and results

4/3/07 UT
Thick to patchy high clouds and excellent seeing (~0.75" in V). Boresighted LLT and checked image quality (<1.2" FWHM stars, ~1.6" FWHM LGS). Much debugging of laser and BTO. Major problems with the AO telemetry system. Laser 4-5W. Debugged acquisition procedures and achieved K Strehl=24% on a bright LGS target despite clouds. 4/3/07 UT Night Log (pdf)

• Acq. camera NGS platescale: (0.163, 0.182) arcsec/pixel

4/4/07 UT
Patchy to thick high clouds and excellent seeing (0.50-0.75" in V). Failed AO electronics in Cass cage discovered and fixed. Investigated TAO/telemetry software problems but no fix yet found. Optimized LGS-AO performance on bright tip-tilt stars. Laser 4-5 W. Achieved K Strehl 38%. 4/4/07 UT Night Log

• Acq. camera LGS platescale: ~0.183 arcsec/pixel

4/5/07 UT
Thick high clouds all night. Opened briefly for NGS-AO. Laser 6.3 W. Some in-dome engineering performed. 4/5/07 UT Night Log

4/6/07 UT
Scattered to thick high clouds. Laser 4.5 W. Opened briefly on 2 occasions. Acquired 2 LGS-AO science targets successfully. 4/6/07 Night Log

4/7/07 UT
Clear with some haze. Laser acousto-optic modulator master oscillator is broken, and no target clearance received from US-STRATCOM. Cancelled night for the laser at 23:00. 6/7/07 Night Log