Changes between Initial Version and Version 1 of docs/CommissioningPlan/P2.9


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Timestamp:
03/05/20 12:32:26 (5 years ago)
Author:
kradhakrishnan
Comment:

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  • docs/CommissioningPlan/P2.9

    v1 v1  
     1== P2.9 Nighttime acquisition and setting telescope collimation for night ==
     2•       **Phase**               :       2 
     3•       **Status**              :       Draft   
     4•       **Category**            :       Nighttime testing (functionality and operability) (C4)
     5•       **Recurrence**  :       after instrument installation at telescope platform
     6•       **Duration**            :       3 hour(s)
     7**Description**
     8•       A bright enough on-axis star is acquired with SHARK-NIR, to define the offset to issue to the telescope for a successful pointing. Telescope collimation model is optimized for the night, if necessary.
     9**Prerequisites**
     10•       Atmospheric conditions: should be able to see bight stars on the sky (preferably close to zenith?)
     11**Procedure**
     12•       Authorize SHARK-NIR on the SX side.
     13•       Point to bright star on the sky and acquire. Once the star is at the reference pixel of the SCICAM, record the nighttime telescope collimation model for SHARK NIR.
     14•       Close the loop at least with low order to save the flat for the ASM.
     15•       If needed, run again the NCPA estimation and record the flat again.
     16•       Go to another bright star in the field to see if the star appears immediately in the FoV of SHARK-NIR. If needed, correct the offset and record new collimation. Iterate this with another star to cross-check again.
     17•       If time allows, perform NCPA within SHARK (using the phase-diversity method) and check the working the residual tip-tilt loop+NCPA at the ALPAO DM.
     18•       Save telemetry (open and closed loop of the ALPAO DM).
     19**Success criteria**
     20•       First-ever ‘technical photons’ at the SHARK-NIR WFS and SCICAM.
     21•       Nighttime collimation model of the SHARK-NIR is recorded.
     22•       Satisfactory PSF quality with closed loop.
     23•       Telemetry saved (open and closed loop of ALPAO DM) for **Phase** diversity NCPA estimation.
     24**Notes**
     25**LBTO support**
     26•       Support from LBTI/LBTO?
     27•       Presence of John Hill usually helps while collimating for the first time.
     28•       Steve Allenson (as the TO) will be a great asset too.
     29**Associated SHARK-NIR personnel**
     30•       JF, LM, MdP, MM (from AZ), DV?
     31**Date performed and by whom**