NGC4654 Galaxy in Virgo

 

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Description: This galaxy is 4.7 arc-min. across.
 
Exposure Data: 4/30/2003.  LRGB: 11x10m, 7x10m, 7x10m, 7x10m, RGB 2x2. -10C, 0.49 arc-sec./pixel.
 
Processing: Acquired via Sequencer and Maxim, reduced and aligned in Mira, combined with Sigma Reject plug-in and gradient correction in Maxim, L: 10xRL in AIP4WIN, RGB combined 1.35:1.0:1.57 in Maxim, LRGB assembly, curves, levels, USM other processing in Photoshop.
 
Optical System: 12.5 Ritchey-Chretien RCOS Truss @ F/9, ST-10XME USB NABG/CFW-8A CCD camera, L: AO7-guided, RGB: autoguided with Paramount ME mount.
 
Comments: First light with 12.5" RC truss.  Average L star sizes is 1.8 arc-sec.