Focus




Telescope MDM 1.3m
Date 4/5/95
Instrument Nellie
Filter V
Exposure
Time
900
sec
Other scale: 0.44 "/pix

Problem:

Radial profile of out of focus star. Note the large scatter around the profile fit, especially around the base of the profile.

Fix:

Change focus until the profiles show the smallest FWHM with the least scatter.

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