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|Description:||The Cocoon nebula, around 4,000 light years
distant, consists of a young open cluster surrounded by emission, reflection
and absorption nebula.
|Exposure Data:||7/8/2002. RGB: 10x10m, 5x10m, 10x10m, G 2x2. -10°C,
|Processing:||Acquired via Sequencer, reduced, aligned, block
sum (RB) in Mira, Sigma Reject combine, RGB combine, RB merge
70%/100%, in Maxim, final adjustments in Photoshop.
|Optical System:||12.5” Ritchey-Chretien @ F/9, ST-10XME NABG/CFW-8A
CCD camera, Paramount ME. FSQ/STV guided.
|Comments:||Using a block sum in Mira eliminates the need
for additional R,B binned frames at some slight loss in color SNR.