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| Date: | July, 2006, 2007 |
| Location: | Elizabeth, CO. Mag 5.0 skies, elevation ~ 6500 ft |
| Telescope: | 16" f/4.8 Newtonian, Pegasus Optics primary, working at f/9.8 |
| Mount: | Mathis Instruments MI-500 w/ AP1200 computer control |
| Exposure Duration: |
Luminance = Total 240 mins, -15 deg C Color = Total 24 mins, -15 deg C |
| Imager: | Luminance = ST-10XME, color = ST2000XCM |
| Filtration, etc: |
Luminance = Ha filter made by stacking Custom Scientific luminance filter and Wratten #29 dark red glass filter (Lumicon Ha filter). 2" TeleVue PowerMate used to go to f/9.8 (e.f.l. = 3983 mm) Color = 3" Wynne/Keller coma corrector mounted to front of XCM, no filter |
| Guiding: | Luminance = AO-L guided at ~10 Hz, Color = normal self guided |
| Seeing: | ~2" |
| Comments: |
Luminance = Subimages (8 min) median combined in sets of three in Maxim. 50 iterate PC deconvolution on each median in CCDStack. Deconvolved medians averaged in Maxim. DDP/sharpening on average in CCDStack Previous processing used for color image: m27_2xpm.htm Color image and luminance image registered in Registar. HaRGB assembled in Corel's PhotoPaint 12 using LAB |
Return to the Nebulae Images page or The Bell Observatory homepage or go to SEDS page (astronomical information on M27)