P1.7 Motor/light sources functional verification and filter artifacts/defects verification

• Phase : 1
• Status : Draft
• Category : Unpack, Assemble, and Verification (C1)
• Recurrence : once
• Duration : 1.5 days

Description

• Checking the working of motors and light sources within SHARK-NIR using optical feedback. Finding the filter defects/artefacts using an internal calibration source (flat-field) within the instrument.

Prerequisites

• SHARK-NIR connected to LBT network.
• Electronics racks on.
• DM best shape uploaded (shape minimizing internal aberrations)
• The cryostat should be running and cooled down.

Procedure

• When the services are up and running, after the motors are sent to home positions, each of the individual motors is individually tested for their different named/nominal positions.
• The light sources within SHARK-NIR are used simultaneously to check the working of the motors looking at the optical feedback.
• Check the CRED-2 and ALPAO-DM SW using optical feedback.
• Take the images of all the filters using the internal calibration source (flat-field) within the instrument to locate/find out the filter defects/artefacts, if any. You may take short- and long-exposures to get better contrast of the features if required.
• Check the filter wheel position monitoring script detailed in SNM1. Save the data in the repository.

Templates

• SHARKNIR_ci_mon_LyotMaskPos (not released)
• SHARKNIR_di_mon_MaskRepeatability (not released)

Success criteria

• All the motors can reach the named positions / nominal positions.
• All the light sources are working and confirmed through optical feedback at the SCICAM.
• Filter wheel position monitoring script is run successfully and data is saved in the repository.
• CRED-2 AND ALPAO-DM working normally.
• All the filter images are saved.

Notes

LBTO support

• Liquid Nitrogen refill is required in the cleanroom.

Date performed and by whom