NGC 891 (Galaxy in Andromeda)

Date: December 2006 (XCM), November 2007 (ST-10)
Location: Elizabeth, CO. ~6500 ft., Mag 5.5 skies
Telescope: 16" f/4.9 Newtonian, Pegasus Optics primary
Mount: Mathis Instruments MI-500
Exposure: 144 min (2.4 hr) luminance ST-10XME, 90 min RGB ST-2000XCM
Corrector: ST-10 subs at f/9.8 using TeleVue 2x PowerMate. XCM subs at f/4.9 using 3" Keller/Wynne coma corrector. Custom Scientific luminance filter used on each sub. Image scale of large image at f/7.35
Seeing: ~2"

Eighteen ST-10 8 min subs median combined in groups of three in Maxim. 50 iterate PC deconvolution on each median in CCDStack. Deconvolved medians summed in Maxim. DDP/sharpening on sum applied in CCDStack

Previous image used as colorizing image: ngc891_2xpm.htm. Color/luminance images registered in Registar. Final LRGB assembly in Corel's PhotoPaint 12 using LAB

Return to the Galaxy Images page or The Bell Observatory homepage or go to SEDS page (astronomical information on NGC891)