calibration
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Calibration
Calibration spot
The calibration spot moves up and down as the calstage is moved. To move the calibration stage left/right one needs to adjust one of the screws on the mirror mount for the mirror in front of the Shelyak. I believe that turning the top screw CW (from behind the mirror) moves the spot to the right.
Best focus for calibration spot determined by looking at image cross-sections at different focus values.
With iodine cell out:
With iodine cell in:
From on-sky tests, focus with iodine is 4625 microns farther back than without iodine. Calibration channel focus seems consistent with this.
calibration.1760127075.txt.gz · Last modified: by holtz