Changes between Version 8 and Version 9 of docs/CommissioningPlan/P3.9
- Timestamp:
- 04/22/22 20:49:12 (3 years ago)
Legend:
- Unmodified
- Added
- Removed
- Modified
-
docs/CommissioningPlan/P3.9
v8 v9 1 == P3.9 NCPA working and performance & checking for pupil shifts==2 1 == P3.9 Check the acquisition procedure == 2 3 3 - **Phase** : 3 4 4 - **Status** : Draft 5 - **Category** : Nighttime testing (functionality and operability) (C5) + Nighttime testing for performance (C7)5 - **Category** : Nighttime testing (functionality and operability) (C5) 6 6 - **Recurrence** : once at commissioning 7 - **Duration** : 3 nights7 - **Duration** : 2 hours 8 8 9 9 **Description** 10 - Evaluate the NCPA working and performance using the baseline approach, phase-diversity approach using the Wollaston prism & dual-band imaging, and measurement of NCPA using SHARK-NIR internal calibration sources.10 - Verify the acquisition sequence for SHARK-NIR 11 11 12 12 **Prerequisites** 13 - Atmospheric conditions: TBD13 - Atmospheric conditions: should be able to see bright stars in the sky (preferably close to zenith?). 14 14 - Authorize SHARK-NIR on the SX side. 15 - AO is working. 16 - Target(s) at different Zenith distances with different magnitudes. 17 - lookup tables of already calibrated NCPA measurements. 15 - Suitable bright enough target (including the possibility of performing AO). 18 16 19 17 **Procedure** 20 - Acquire a star of a given magnitude, start SOUL-AO, followed by the internal-TT loop. 21 - Check the working and performance of the NCPA (already calibrated) baseline approach. Take images at SCICAM. 22 - Check the phase diversity NCPA approach using Wollaston prism + DI-DBI (already calibrated). Take images at SCICAM. 23 - If the PSF after applying the calibrated NCPA is bad, we could close the SHARK-NIR shutter (can have the SOUL-AO running parallel) and do a quick internal NCPA measurement (either till the NCPA modal coefficients or until the new shape on ALPAO-DM) to confirm that the alignment of SHARK-NIR is still good. This would mean that the NCPA already calibrated is not good enough! 24 - Measure the phase diversity NCPA approach using Wollaston prism + DI-DBI and using real star (need to do on the spot, but script exists). Take images at SCICAM. 25 - Check the pupil position by inserting the pupil lens. 26 - Repeat for a different star (of various magnitudes and for a different telescope elevation). It is also good to do this for other seeing conditions. 18 - Start the acquisition sequence: collimating the telescope to reduce the aberrations, close the loop and produce better ASM flat, NCPA estimation using phase-diversity algorithm, close SHARK-NIR tip-tilt+NCPA loop, and check the PSF quality at SCICAM. 19 - Save telemetry (open and closed loop of the ALPAO DM). 27 20 28 21 **Templates** 29 - SHARKNIR_di_cal_NCPA (not released) 22 - SHARKNIR_ci_acq (not released) - coronagraphic mode 23 - SHARKNIR_di_acq (not released) - direct imaging mode 24 - SHARKNIR_lss_acq (not released) - long slit spectroscopy mode 30 25 31 26 **Success criteria** 32 - NCPA estimated and applied on the ASM / ALPAO DM. 33 - Cross-check the NCPA performances with the daytime activity [wiki:/docs/CommissioningPlan/P2.6 P2.6]. 34 - The total residual after NCPA correction should be <30nm. 27 - Successful acquisition sequence. 35 28 36 29 **Notes** … … 40 33 41 34 **Date performed and by whom** 42 43 **comment**44 - perform for 5 cases e.g. Rmag 8, 10, 10, 12, 14. These five cases where the star has different mag and at different zenith angles over different nights (so different seeing).