P3.13 Distortion map

• Phase : 3
• Status : Draft
• Category : Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
• Recurrence : once every week starting from commissioning + on request.
• Duration : 4 hours

Description

• Determine distortion map of science frame. Monitor distortion coefficient with time (weekly calibration) and measure the precise distortion of a given observation in any setup, if requested.

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 a dense field (e.g., a globular cluster) with accurate HST astrometry and a guide star bright enough (mag F860W < 11).

Templates

Success criteria

• Better than 1 mas over FoV.

Notes

• Same as activity 9.6 in AD4

LBTO support

• AO support

Date performed and by whom