P2.4 SHARK-NIR alignment to the telescope

• Phase : 2
• Status : COMPLETE
• Category : Daytime testing (functionality and operability) (C3)
• Recurrence : once after instrument installation at telescope platform
• Duration : 3 days

Description

• SHARK-NIR is aligned to the telescope, and the daytime collimation model is acquired.

Prerequisites

• All electronics and services are up and running.
• SHARK-NIR shutter open, and deployable arm (dichroic + IN-TT) deployed to get the light directed into SHARK-NIR.

Procedure

• Since SHARK-NIR has the same focal station as LBTI, the telescope is set to the LBTI collimation model to start the alignment of SHARK-NIR to the telescope. Verify on LMIRCAM if the PSF generated by ARGOS on-axis light source is on the hot-pixel
• Using ARGOS on-axis calibration light source, IN_TT and Dichroic (of the deployable arm) are moved to have the on-axis PSF and the pupil (i.e., the ASM footprint) on the reference position on SCICAM (and TECCAM), within a few pixels, identified during the internal alignment of the instrument.
• SHARK-NIR focus alignment is done applying defocus to the ASM.
• At the end of the alignment, check that our deployable arm, when un-deployed, does not vignette any of the technical FoV of LBTI (which is 120 more or less). Need to confirm if this activity can be performed only at night (authorize LBTI night collimation).

Templates

• SHARKNIR_gen_tec_PSFAlignment
• SHARKNIR_gen_tec_PupilApoAlignment
• SHARKNIR_gen_tec_PupilLyotAlignment

Success criteria

• On-axis spot from the ARGOS light source at the reference pixel of the SCICAM.
• Pupil image (ASM footprint) from ARGOS light source co-centered with the internal pupil of SHARK-NIR
• The daytime SHARK-NIR collimation model is recorded.
• Something with LBTI?
• TBD

Notes

• For some reason, if the Argos swing arm calibration source is not good enough, we need to mount RR with NIRVANA Barilotto on the SX side and use that source.
• If needed, we can move the SOUL-WFS in x-y-z axes.

LBTO support

• Working platform installed in front of the Gregorian focal station SX.
• RR Iinstalled with NIRVANA Barilotto on the SX side on first day of alignment
• Argos swing arm and calibration source on SX side.
• Support from the LBTI team.

Date performed and by whom