2017-04-07
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CDK20N at Moore Observatory
John Kielkopf

Short exposures with good focus to resolve Castor (alpha Gemini)

castor_00004_g.fits  g' filter 1 second exposure

Orient image in ds9 using invert Y and rotate 180 degrees to make it NSEW

The star below Castor is YY Gem

castor_00008_g.fits  Sloan g'
castor_00009_r.fits  Sloan r' 
castor_00011_i.fits  Sloan i'
castor_00012_z.fits  Sloan z'

Are selected images with short 6 millisecond exposure and good focus will not
show fainter field stars.

The two png files show a 1 second image in g' on log scale to pick up the background
stars and a 6 miilisecond image in r' to resolve Castor and show both
components.

The png images are oriented north up, east left.