Changes between Version 8 and Version 9 of docs/CommissioningPlan/P3.9


Ignore:
Timestamp:
04/22/22 20:49:12 (3 years ago)
Author:
kradhakrishnan
Comment:

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  • 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
    33- **Phase**             :       3 
    44- **Status**            :       Draft   
    5 - **Category**  :       Nighttime testing (functionality and operability) (C5) + Nighttime testing for performance (C7)
     5- **Category**  :       Nighttime testing (functionality and operability) (C5)
    66- **Recurrence**        :       once at commissioning
    7 - **Duration**  :       3 nights
     7- **Duration**  :       2 hours
    88
    99**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
    1111
    1212**Prerequisites**
    13 - Atmospheric conditions: TBD
     13- Atmospheric conditions: should be able to see bright stars in the sky (preferably close to zenith?).
    1414- 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).
    1816
    1917**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).
    2720
    2821**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
    3025
    3126**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.
    3528
    3629**Notes**
     
    4033
    4134**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).