Shane AO

Procedure: ShARCS Calibration

Install Argon arc lamp (manually).
Set Cal X and Cal Y to White Light
Use Cal X and Cal Y detail panels realtive move with values of a few 100 encoder counts to maximize WFS illumination
Configure filter and aperture wheels for K-band spectroscopy:
Filter#1 = CaF-Kgrism and Filter#2 = K and Aperture = Slit-100mm-H
For Slit-100um-H, the target encoder value is: 0 ± 4.
Set Window to Full Frame.
Set NCoadds to 1.
Expose a minimum of 3 arc lamp spectra, seeking to achieve a few hundred to a few thousand counts (not exceeding 20000 counts) in several arc lines.
Example exposure times (2015) in range 1.5 to 15.0 seconds.
Record file, configuration, exposure time.
Configure filter and aperture wheels for H-band spectroscopy:
Filter#1 = H and Filter#2 = HGrism and Aperture = Slit-100mm-H
For Slit-100um-H, the target encoder value is: 0 ± 4.
Set Window to Full Frame.
Set NCoadds to 1.
Expose a minimum of 3 arc lamp spectra, seeking to achieve a few hundred to a few thousand counts (not exceeding 20000 counts) in several lines.
Example exposure times (2015) in range 1.5 to 6.0 seconds.
Record file, configuration, exposure time.
Set Cal Y to Open
Remove Argon lamp (manually).

Set Cal X to White Light
Set Cal Y to Open
Set sdiagmir_fe to position 3
Ensure ambient enclosure illumination is OFF and primary mirror cover OPEN
In slinelamp_fe set Sup_Blue Dimmer to 25
Configure filter and aperture wheels for H-band spectroscopy:
Filter#1 = H and Filter#2 = HGrism and Aperture = Slit-100mm-H
For Slit-100um-H, the target encoder value is: 0 ± 4.
Set Window to Full Frame.
Set NCoadds to 1.
Expose a minimum of 3 spectroscopic flat field frame, seeking to achieve a few hundred to a few thousand counts (not exceeding 20000 counts) in several lines.
Example exposure times (2015) circa 18.0 seconds.
Record file, configuration, exposure time.
Configure filter and aperture wheels for K-band spectroscopy:
Filter#1 = CaF-Kgrism and Filter#2 = K and Aperture = Slit-100mm-H
For Slit-100um-H, the target encoder value is: 0 ± 4.
Set Window to Full Frame.
Set NCoadds to 1.
Expose a minimum of 3 spectroscopic flat field frame, seeking to achieve a few hundred to a few thousand counts (not exceeding 20000 counts) in several lines.
Example exposure times (2015) circa 18.0 seconds.
Record file, configuration, exposure time.
In slinelamp_fe set Sup_Blue Dimmer to OFF

Set Cal X to White Light
Set Cal Y to Open
Set sdiagmir_fe to position 3
Ensure ambient enclosure illumination is OFF and primary mirror cover OPEN
In slinelamp_fe set Red to On
Configure filter and aperture wheels for (typically) Ks-band imaging:
Filter#1 = Ks and Filter#2 = Open and Aperture = Open
Set Window to Full Frame.
Set NCoadds to 1.
Expose a minimum of 3 flat fields, seeking to achieve a few thousand counts (not exceeding circa 20000 counts).
Example exposure times (2015) circa 12.0 seconds.
Record file, configuration, exposure time.
Configure filter and aperture wheels for (typically) H-band imaging:
Filter#1 = H and Filter#2 = Open and Aperture = Open
Set Window to Full Frame.
Set NCoadds to 1.
Expose a minimum of 3 flat fields, seeking to achieve a few thousand counts (not exceeding circa 20000 counts).
Example exposure times (2015) circa 12.0 seconds.
Record file, configuration, exposure time.
Configure filter and aperture wheels for (typically) J-band imaging:
Filter#1 = J and Filter#2 = Open and Aperture = Open
Set Window to Full Frame.
Set NCoadds to 1.
Expose a minimum of 3 flat fields, seeking to achieve a few thousand counts (not exceeding circa 20000 counts).
Example exposure times (2015) circa 40.0 seconds.
Record file, configuration, exposure time.
In slinelamp_fe set Red to Off


	This document last updated (UTC): Tuesday 04 March 2025