Changes between Version 17 and Version 18 of docs/CommissioningPlan/P3.10


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Timestamp:
01/14/22 18:55:24 (3 years ago)
Author:
kradhakrishnan
Comment:

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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
    79**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
    911
    1012**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).
    1616
    1717**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**
    2522
    2623**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.
    3025
    3126**Notes**
    3227
    3328**LBTO support**
    34 •       AO support
    35 
    36 **Associated SHARK-NIR personnel**
     29- AO support
    3730
    3831**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).