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I finally spent an evening using my AP Traveller and AP900GTO mount I purchased a few months back. I put my ST10XME and my FLI DF2 and FLI CFW1 filter wheel on the scope for the imaging train. The first image is of M31. It was taken with Optec IR-Blocking LRGB filters. Each sub exposure was 1 minute and the total exposure time was 35 minutes: http://www.rdcrisp.darkhorizons.org/m31_LRGB_page.htm The next shot is of M42/M43. Orion was simply awesome after it started rising high in the Southern Sky about 2am. I couldn't resist taking an Ha RGB set. I add the Ha data to the Red data and used that for the Red channel. Likewise I summed the Ha, R, G and B data and used that for the Luminance channel. The Ha shots were taken through a Schuler Ha filter (9nm FWHM) and the exposures were one minute. Through the RGB filters, the exposures were 20 seconds each. There were 20 exposures through each filter. The total exposure time was 40 minutes. http://www.rdcrisp.darkhorizons.org/m42_orion_nebula_lrgb_page.htm The last shot is of the Flame Nebula and Horsehead Nebula in Orion. It was exposed the same way as the M42/M43 shot above, but had 30 shots through each filter. Again the Ha shots were 1 minute each. The LRGB shots were 20 seconds each. http://www.rdcrisp.darkhorizons.org/flame_and_horsehead_page.htm
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