P3.0 Large spatial scale instrument and telescope flat field

• Phase : 3
• Status : Draft
• Category : Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
• Recurrence : before every night observations (valid for all observing modes). 2/day for CI (BB filter only).
• Duration : 2 hours

Description

• Flat field is taken during twilight

Prerequisites

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

Procedure

• This calibration is performed by sky observation combined with a pointing scan to record a flat (including telescope large scale transmission variations) on the detector.
• Single integration times for a given setup, using various flux levels with natural light with no coronagraph.

Templates

Success criteria

• Width of flux distribution: 3.10-2

Notes

• Same as activity 7.5 in AD4

LBTO support

• Dome open during twilight

Date performed and by whom