Changes between Version 4 and Version 5 of docs/CommissioningPlan/P3.17


Ignore:
Timestamp:
01/14/22 19:04:39 (3 years ago)
Author:
kradhakrishnan
Comment:

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  • docs/CommissioningPlan/P3.17

    v4 v5  
    1 == P3.17        Instrumental throughput and absolute flux calibration ==
    2 •       **Phase**               :       3 
    3 •       **Status**              :       Draft   
    4 •       **Category**            :       Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
    5 •       **Recurrence**  :       once every month starting from commissioning and then on request for accurate photometry (using CI and DBI).
    6 •       **Duration**            :       4 hours
     1== P3.17 Orient the coronagraphs ==
     2 
     3- **Phase**             :       3 
     4- **Status**            :       Draft   
     5- **Category**  :       Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
     6- **Recurrence**        :       before every observing target (CI, LSS), starting from commissioning.
     7- **Duration**  :       4 hours
     8
    79**Description**
    8 •       Throughput calibration to obtain absolute flux calibration of science targets.
     10- Adjust the orientation of the coronagraphic masks with respect to the true orientation of the M2 spider by rotating the SHARK-NIR derotator.
     11
    912**Prerequisites**
    10 •       Authorize SHARK-NIR on the SX side.
    11 •       Atmospheric conditions: AO working conditions.
    12 •       Bad pixel map, Background or Dark, Flat-field, distortion map
     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 star close to zenith to have negligible effects from flexures (including the possibility of performing AO).
     16
    1317**Procedure**
    14 •       Observe a spectro-photometric standard star of known magnitude with no coronagraph and for required filters.
     18- 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 pupil's alignment, maybe)?
     19- This operation is repeated for all the coronagraphs.
     20
     21**Templates**
     22
    1523**Success criteria**
    16 •       Flux measurement better than 10%
     24- All the coronagraphs are aligned to the true orientation of the M2 spider by maximizing the contrast at SCICAM.
     25- Note down the contrast achieved for all the coronagraphs, including the atmospheric conditions and the brightness of the on-axis star.
     26
    1727**Notes**
    18 •       Same as activity 7.3 in AD4
     28
    1929**LBTO support**
    20 •       AO support
    21 **Associated SHARK-NIR personnel**
     30- AO support
    2231
    2332**Date performed and by whom**