NGC4568 and NGC4567 in Virgo


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Exposure Data: 4/12/2002.  LRGB: 20x5m, 5x5m, 5x5m, 5x8m. -10°C, 1.0 arc-sec./pixel.
Processing: Acquired via script with Maxim, reduced, combined, aligned in Mira, L 3x CCDSharp, RGB combine in Maxim, LLRGB, curves, levels, pixel shift, unsharp mask in Photoshop.
Optical System: 10” Ritchey-Chretien @ F/7.2, ST-8E NABG/CFW-8A CCD camera, STV/FSQ-106, AP900GTO mount.
Comments: Seeing 3.6 arc-sec. Used B. Johnston’s pixel shift idea in Photoshop to reduce star bloat. NGC4567 is the smaller galaxy.