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Technical card

Resolution: 3326x2504

Dates: Feb. 15, 2015

Frames: 94x300"

Integration: 7.8 hours

Avg. Moon age: 25.02 days

Avg. Moon phase: 21.35% job: 1684172

RA center: 187.169 degrees

DEC center: 13.206 degrees

Pixel scale: 2.939 arcsec/pixel

Orientation: 89.870 degrees

Field radius: 1.700 degrees


One of the awesome things about this hobby is how one can revisit old data when exciting new data process tools appear. I had data from Feb 2015 of the Markarian chain region which is almost devoid of color. Tried the new PI 1.8.5 Photometric Color Calibration on the linear RGB. Selected a SO type galaxy reference.. Then made RGBL. Data was with the TMB 80 at F/4.8.



Ron Crouch



Maybe a little darker version but larger size. so many little things...

Sky plot

Sky plot


Markarian Chain redo, Ron Crouch