P3.12 Astrometry plate scale and orientation

• Phase : 3
• Status : Draft
• Category : Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
• Recurrence : every night starting from commissioning
• Duration : 2 hours

Description

• Determine the astrometry of the science frame. Deduce detector on sky coordinates & plate scale from RA & DEC of known multiple stellar systems. This calibration is to be done for a reference setup.

Prerequisites

• Authorize SHARK-NIR on the SX side.
• Atmospheric conditions: AO working conditions.
• Bad pixel map, Background or Dark, Flat-field, distortion map

Procedure

• Observe multiple systems with known characteristics without the coronagraph

Templates

• SHARKNIR_cal_Astrometry (not released)

Success criteria

• Image scale better than 5 mas (goal 0.5 mas) over FoV, image orientation better than 3 arcmins (goal 18 arcsec)

Notes

• Same as activity 7.1 in AD4

LBTO support

• AO support

Date performed and by whom