P3.20 Flux calibration for LSS

• Phase : 3
• Status : COMPLETE
• Category : Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
• Recurrence : once at commissioning and then at the end of each LSS observation.
• Duration : 2 hours

Description

• Extract spectrum of the host star, to be used to obtain the spectrum in contrast for the companion.

Prerequisites

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

Procedure

• Preset to the targeted star.
• Eventually, center the star behind the slit occulter.
• Apply an offset using the internal DM to move the star out of the occulting mask (but still into the slit).
• Take the spectrum of the star.
• Put the star back behind the slit occulter.

Templates

• SHARKNIR_lss_cal_FluxCalibration

Success criteria

• Better than 10% for absolute flux calibration.

Notes

• Same as activity 7.4 in AD4

LBTO support

• AO support

Date performed and by whom