P3.5 PSF Alignment

• Phase : 3
• Status : Draft
• Category : Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
• Recurrence : before every observing target (CI, LSS), starting from commissioning.
• Duration : 2 hours

Description

• Alignment of the PSF with occulter (or slit) in coronagraphic mode.

Prerequisites

• Bad pixel map, Background or Dark, Flat-field, detector RON

Procedure The internal deformable mirror's position (TTM_DM) is optimized to have the PSF image on the intermediate focal plane centered with the occulter. We compare the PSF image, formed on the SCICAM, with the image of the occulter obtained on the SCICAM using the calibration flat-field source.

Templates

Success criteria

• the expected accuracy of 0.2 pixels (DV: need to check if we can reach this).

Notes

• Same as activity 8.3 in AD4
• 7 cases, 30 mins per case.

LBTO support

• AO support

Date performed and by whom