Changes between Version 3 and Version 4 of docs/CommissioningPlan/P3.18

Timestamp:

01/19/21 18:04:34 (4 years ago)

Author:

kradhakrishnan

Comment:

--

docs/CommissioningPlan/P3.18

@@ -1 @@
-== P3.0 Large spatial scale instrument and telescope flat field == 
+
+ == P3.18       Atmospheric calibration and absolute flux calibration == 
 •       **Phase**               :       3  
 •       **Status**              :       Draft    
 •       **Category**            :       Nighttime testing (functionality and operability) (C4)
-•       **Recurrence**  :       before every night observations (valid for all observing modes). 2/day for CI (BB filter only).
-•       **Duration**            :       2 hours
+•       **Recurrence**  :       once at commissioning and then for each LSS observation observations.
+•       **Duration**            :       1 hour
 **Description**
-•       Flat field taken during twilight 
+•       Atmospheric calibration to remove telluric atmospheric features from the stellar spectrum and get absolute flux calibration per spectral resolution element. 
 **Prerequisites**
 •       Authorize SHARK-NIR on the SX side.
 •       Atmospheric conditions: AO working conditions.
-•       Bad pixel map, Background or Dark. 
+•       Bad pixel map, Background or Dark, Flat-field, wavelength calibration. 
 **Procedure**
-•       This calibration is performed by sky observation combined with pointing scan in order to record a flat (that include telescope large scale transmission variations) on the detector. 
-•       Single integration times for a given setup, using various flux level with natural light with no coronagraph.
+•       Observe the spectrum of a featureless (and/or standard) star at similar airmass that of the science target.
 **Success criteria**
-•       Width of flux distribution: 3.10-2  
+•       Better than 10% for absolute flux calibration and for average residuals from telluric removal.
 **Notes**
-•       Same as activity 7.5 in AD4
+•       Same as activity 7.4 in AD4
 **LBTO support**
-•       Dome open during twilight
-
+•       SOUL-AO support
 **Associated SHARK-NIR personnel**