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July 04 2010

M51 - Whirlpool Galaxy from very Suburban Skies


Data collected with 10 inch RCOS Ritchey Chretien on an AP1200 Mount, SBIG ST-10XME/CFW10/AO8 with Water Assisted Cooling. 32x300s Luminance 1x Bin, 22x300s RGB 1x Bin plus 10x300s RGB 2x Bin. Sub Exposures calibrated, aligned and stacked in CCDStack. Final color combine using Photoshop CS2. Another exercise in dealing with Mag 3 skies and a lot of gradient removal. Also guided using AO8, @ 1Hz


Effective Focal Length 2292.4 mm ~ .61" per Pixel

Image Center: RA 13h 29m 54s, Dec +47d 12m 47s, Pos Angle +89d 26'

Submitted by: William R. Mattil (wrmattil)Location: North Ft Worth, TexasDate: April 08 2010

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July 04 2010