P1.10 Internal alignment verification

• Phase : 1
• Status : Draft
• Category : Unpack, Assemble, and Verification (C1)
• Recurrence : once
• Duration : 1 day

Description

• Check the internal alignment of the SHARK-NIR using the light sources within.

Prerequisites

• SHARK-NIR is connected to the LBT network.
• Electronics cabinets on.
• The cryostat should be running and cooled down.

Procedure

• Use the on-axis calibration fiber, and check if the PSF position on the scientific detector is consistent with the one recorded before shipping for multiple bearing angles. Perform Phase Diversity measurement to compare the retrieved aberrations on the on-axis PSF with the ones measured before shipping.
• Check the pupil position at the detector and verify the consistency with the one before shipping.
• Check the relative alignment of the coronographic masks.

Templates

Success criteria

• The on-axis spot at the SCICAM is where it should be across the bearing rotation.
• Use pupil images and compare.
• PSF quality across (using in-focus and out-of-focus fibers).
• Coronographic masks are co-aligned.

Notes

LBTO support

• Liquid Nitrogen refill is required in the cleanroom.
• We will need lights ON and OFF during the re-alignment of the instrument inside the cleanroom.
• 4D interferometer (TBC).

Date performed and by whom