Changes between Version 2 and Version 3 of docs/CommissioningPlan/P3.6


Ignore:
Timestamp:
01/19/21 14:29:12 (4 years ago)
Author:
kradhakrishnan
Comment:

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  • docs/CommissioningPlan/P3.6

    v2 v3  
    1  == P3.5        Orient the coronagraphs ==
     1 == P3.6        PSF Alignment ==
    22•       **Phase**               :       3 
    33•       **Status**              :       Draft   
    44•       **Category**            :       Nighttime testing (functionality and operability) (C4)
    5 •       **Recurrence**  :       once at commissioning
    6 •       **Duration**            :       40 minutes
     5•       **Recurrence**  :       before every observing target (CI, LSS), starting from commissioning.
     6•       **Duration**            :       30 minutes
    77**Description**
    8 •       Adjust the orientation of the coronagraphic masks with respect to the true orientation of M2 spider.
     8•       Alignment of the PSF with occulter (or slit) in coronagraphic mode.
    99**Prerequisites**
    10 •       Atmospheric conditions: should be able to see bight stars on the sky (preferably close to zenith?).
    11 •       Authorize SHARK-NIR on the SX side.
    12 •       Suitable bright enough star close to zenith to have negligible effects from flexures (including the possibility of performing AO).
     10•       Bad pixel map, Background or Dark, Flat-field, detector RON
    1311**Procedure**
    14 •       Pointing to a star, the first coronagraph is inserted in the path. The bearing is rotated maximizing the contrast achieved on the SCICAM.  (use the pupil lens to see the pupils alignment maybe)?
    15 •       This operation is repeated for all the coronagraphs.
     12•       The position of the internal deformable mirror (PUPIL_DM) is optimized in order to have the PSF image on the intermediate focal plane centered with the occulter. This is obtained comparing the PSF image, formed on the SCICAM, with the image of the occulter, obtained on the SCICAM using the calibration flat-field source.
    1613**Success criteria**
    17 •       All the coronograph are aligned to the true orientation of the M2 spider by maximizing the contrast at SCICAM.
    18 •       Note down the contrast achieved for all the coronograph including the atmospheric conditions and the brightness of the on-axis star.
     14•       the expected accuracy of 0.1 pixel.
    1915**Notes**
     16•       Same as activity 8.3 in AD4
    2017**LBTO support**
    21 •       Support from LBTI/LBTO?
    22 •       Presence of John Hill usually helps while collimating for the first time.
    23 •       Steve Allenson (as the TO) will be a great asset too.
     18•       SOUL-AO support
    2419**Associated SHARK-NIR personnel**
    25 •       JF, LM, MdP, MM (from AZ), DV?
     20
    2621**Date performed and by whom**