| Date: | January 2008 |
| Location: | Elizabeth, CO. ~6500 ft., Mag 5.5 skies |
| Telescope: | 16" f/4.9 Newtonian, Pegasus Optics primary |
| Mount: | Mathis Intsruments MI-500 |
| Exposure: | 192 mins (3.2 hrs) ST-10XME luminance, 60 mins RGB ST-2000XCM |
| Corrector: |
ST-10 = 2" 2x TV PowerMate, giving f/9.8. Larger image scale at f/9.8. Custom Scientific luminance filter in front of Lumicon Ha filter used on each sub. ST-10 AO-L guided at ~4 Hz XCM = 3" Keller/Wynne coma corrector used at f/4.9. Custom Scientific luminance filter used on each sub. XCM normally guided |
| Seeing: | ~3.5" FWHM |
| Comments: |
Twenty-four ST-10 subs, each 8 mins long, median combined in sets of three, medians summed in Maxim. DDP/75 iterate PC deconvolution and Sharpening applied in CCDStack Six XCM subs, each 10 mins long, calibrated in CCDOps, color converted in Maxim. Median combined in sets of three, medians summed, 50% DDP applied in Maxim. 16-bit TIFF file saved as RGB colorizing image. Luminance and colorizing image registered in Registar, final HaRGB image assembled in CCDStack |