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

Timestamp:

01/19/21 14:05:05 (4 years ago)

Author:

kradhakrishnan

Comment:

--

docs/CommissioningPlan/P3.4

@@ -1 @@
- == P3.4        Telescope control – focal plane geometry estimation == 
+ == P3.4        Pupil alignment == 
 •       **Phase**               :       3  
 •       **Status**              :       Draft    
 •       **Category**            :       Nighttime testing (functionality and operability) (C4)
-•       **Recurrence**  :       once at commissioning
-•       **Duration**            :       1 night
+•       **Recurrence**  :       before every observing target (CI, LSS), starting from commissioning.
+•       **Duration**            :       30 minutes
 **Description**
-•       For the correct telescope mode for SHARK-NIR, find the offset direction & magnitude (for the field-stabilized mode), verify the proper image orientation, pixel scale, field of view, and distortion at the SCICAM. Note that this may be performed with and without AO running.
+•       Alignment of the internal pupil image (PP1) with apodizer in the coronagraphic mode 
 **Prerequisites**
-•       Atmospheric conditions: should be able to see bight stars on sky (preferably close to zenith?).
-•       Authorize SHARK-NIR on the SX side.
-•       Suitable binary or astrometric targets.
-•       AO running for part of the test.
+•       Bad pixel map, Background or Dark, Flat-field, detector RON 
 **Procedure**
-1.      **Procedure** for image orientation
-        -       Select a filter
-        -       Place the de-rotator in the nominal "zero" position.
-        -       Issue a preset to move to a bright star (but not too bright to saturate)
-        -       Center the star in the science channel
-        -       Issue a pure elevation offset to the TCS of ca. 5” and verify expected motion direction on the SCICAM
-        -       Return to the on-axis position and repeat with a pure azimuth motion.
-        -       Issue a preset to move to a suitable astrometric binary (typically 5-8 arcsec separation) and center one star in the science channel.
-        -       Based on the published coordinates of the binary, issue the appropriate offset to center the other star.
-2.      **Procedure** for pixel scale/ plate scale
-        -       Select a filter
-        -       Issue a preset to move to a suitable astrometric binary to measure pixel scale (typically 5-8 arcsec separation)
-        -       Center the binary in the upper half of the SCICAM and take several frames. Average these frames
-        -       Move the binary to the lower half of the SCICAM and repeat.
-        -       Use the difference image (optionally flat-fielded) to verify the expected pixel scale. This gives two measures.
-        -       Repeat this for other filters.
+•       The position of the first tip-tilt mirror (IN_TT) is optimized in order to have the first pupil image centered with the apodizer. This is obtained comparing the pupil image, formed on the SCICAM, with the image of the apodizer, obtained on the SCICAM using the calibration fiber as a source. 
 **Success criteria**
-•       The image orientation is as expected. The pixel scale and field of view of the SCICAM are as expected.
+•       Expected accuracy: 0.25% of pupil image diameter ~17arcsec of the TTM ~1.5pixel SCICAM ~30μm at the level of the SCICAM.
 **Notes**
+•       Same as activity 8.2 in AD4
 **LBTO support**
-•       Support from telescope operator (if needed).
-•       Presence of John Hill usually helps while collimating for the first time. 
+
 
 **Associated SHARK-NIR personnel**
 
+
 **Date performed and by whom**