P3.11 Sky background

• Phase : 3
• Status : Draft
• Category : Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
• Recurrence : once at commissioning and then on request.
• Duration : 2 hours

Description

• Acquire a series of sky backgrounds from science images. A short sky background may also be useful for remaining deviant pixel removal.

Prerequisites

• Authorize SHARK-NIR on the SX side.
• Atmospheric conditions: AO working conditions???

Procedure

• Observe a blank field close to the science target (separation~10-20 arcsec)
• The same set-up as nighttime science observations, but AO is not running, and the coronagraph may be removed. A list of telescope offsets is added to reach an “empty” field and jitter.

Templates

• SHARKNIR_cal_SkyBackground (not released)

Success criteria

• 10% accuracy (dependent on measurement frequency)

Notes

• Same as activity 7.6 in AD4

LBTO support

Date performed and by whom