|
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" |
|
Comments: |
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 |
