P3.19 Sky background

• Phase : 3
• Status : Draft
• Category : Nighttime testing (functionality and operability) (C4)
• Recurrence : once at commissioning and then on request.
• Duration : 10 minutes

Description

• Acquire a series of sky backgrounds from science images, expected mainly when observing extended objects. 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 normal science observations but AO is not running and coronagraph may be removed. A list of telescope offsets is added to reach an “empty” field and jitter.

Success criteria

• 10% accuracy (dependent on measurement frequency)

Notes

• Same as activity 7.6 in AD4

LBTO support

• Support from LBTI/LBTO?

Associated SHARK-NIR personnel

• JF, LM, MdP

Date performed and by whom