April 9, 2008 NGS Engineering
Goals
The Palomar AO system has recently undergone a significant refurbishment. In the 4 months since November 29, 2007, we have:
- Recoated the AO relay flats and OAPs, and repolished and recoated the DM.
- Realigned the AO relay to provide a focus suitable for P1640 and SWIFT.
- Mounted FM3 on a removable kinematic base.
- Modified the PHARO mounting cradle to move PHARO forward 4.5".
- Modified the AO enclosure and added a PHARO FM3 enclosure.
- Installed a new AO stimulus, with 594nm laser source.
- Installed a new motor controller for Aerotech stages.
The purpose of this engineering night is to demonstrate the readiness of the refurbished system for NGS-AO science, and to characterize its performance.
Personnel and engineering schedules
Planning to be present: Angione, Baranec, Bouchez, Burruss, Roberts, Troy.
Engineering schedules:
Procedures and test plans
Please post your test plans on the
Test Plan Library page, and add a link below.
- Daytime tests
- AO bench setup and checkout (2 hrs) - J. Roberts
- Align PHARO focus and pupil (DM and telescope).
- Tune image on PHARO
- Check centration of field stop.
- Recalibrate LOWFS acquisition.
- PHARO pupil motion (1 hr, telescope operator required) - A. Bouchez
- Stimulus/AO system flexure (1 hr, telescope operator required) - R. Burruss
- Nighttime tests
- SSM motion and pupil registration (1 hr) - J. Roberts.
- SSM range, pupil/image motion control, centroid to pupil motion gain)
- Demonstrate new registration & flatmap routines (30 min) - J. Angione
- Closed-loop performance (3 hr?) - A. Bouchez / J. Angione
- Good seeing/Stable transmission.
- V=6?, 8, 10, 12, 14
- Test reconstructors?
- Predictive AO data (10-15 min per data collection, multiple times per night (3-4) if possible) - M. Troy.
- Throughput (1 hr; clear) - R. Burruss.
- Platescale (PHARO, ACAM, LOWFS) (1 hr) - A. Bouchez
- Field distortion (30 min?) - B. Cameron / R. Dekany
- Flexure (1 hr).
- If daytime test shows significant flexure.