Changes between Version 17 and Version 18 of docs/CommissioningPlan/P3.10
- Timestamp:
- 01/14/22 18:55:24 (3 years ago)
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docs/CommissioningPlan/P3.10
v17 v18 1 == P3.10 NCPA working and performance & checking for pupil shifts == 2 • **Phase** : 3 3 • **Status** : Draft 4 • **Category** : Nighttime testing (functionality and operability) (C5) + Nighttime testing for performance (C7) 5 • **Recurrence** : once at commissioning 6 • **Duration** : 3 nights 1 == P3.10 Check the acquisition procedure == 2 3 - **Phase** : 3 4 - **Status** : Draft 5 - **Category** : Nighttime testing (functionality and operability) (C5) 6 - **Recurrence** : once at commissioning 7 - **Duration** : 4 hours 8 7 9 **Description** 8 • 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 9 11 10 12 **Prerequisites** 11 • Atmospheric conditions: TBD 12 • Authorize SHARK-NIR on the SX side. 13 • AO working. 14 • Target(s) at different Zenith distances with different magnitudes. 15 * look up tables of already calibrated NCPA measurements. 13 - Atmospheric conditions: should be able to see bright stars in the sky (preferably close to zenith?). 14 - Authorize SHARK-NIR on the SX side. 15 - Suitable bright enough target (including the possibility of performing AO). 16 16 17 17 **Procedure** 18 • Acquire star of a given magnitude. Start SOUL-AO. Start internal-TT loop. 19 * Check the working and performance of the NCPA (already calibrated) baseline approach. Take images at SCICAM. 20 * Check the phase diversity NCPA approach using Wollaston prism + DI-DBI (already calibrated). Take images at SCICAM. 21 * 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! 22 * 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. 23 * Check the pupil position inserting the pupil lens. 24 * Repeat for a different star (of different magnitudes and for a different elevation of the telescope). It is also good to do this for different 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). 20 21 **Templates** 25 22 26 23 **Success criteria** 27 • NCPA estimated and applied on the ASM / ALPAO DM. 28 * Cross-check the NCPA performances with the daytime activity [wiki:/docs/CommissioningPlan/P2.6 P2.6]. 29 * The total residual after NCPA correction should be <30nm. 24 - Successful acquisition sequence. 30 25 31 26 **Notes** 32 27 33 28 **LBTO support** 34 • AO support 35 36 **Associated SHARK-NIR personnel** 29 - AO support 37 30 38 31 **Date performed and by whom** 39 40 **comment**41 * perform for 5 cases eg 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).