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ASTRO: Leo Trio in LRGB
Last night wasn't scheduled to be a good observing night according to
the usual sources (NWS, Clear Sky Clocks etc). But it looked to me like there was a chance of clearing so I set up my imaging gear anyway. By dark it was getting cloudier and cloudier, having looked pretty good only an hour before. Still I was reluctant to take things apart; it was still pretty early. Around 8pm it was clear, so I went to work on the Leo Trio. The seeing was better than average, I was getting about 3.5 arc-sec stars during focus runs. Usually they are bit bigger from my backyard. Because it was so transparent, the moon didn't bother me too much, which is good because I was not using narrowband filters (straight LRGB for the galaxies last night). I racked up 4 hours and 10 minutes of total exposure time. I used my AP155EDF scope and SBIG ST10XME camera. I had my AP80mm guide scope piggybacked atop and guided with an ST7E. http://www.rdcrisp.darkhorizons.org/m65_trio_page.htm This Galaxy imaging is pretty fun. I still like big nebulae better, but this is galaxy season now, so it is time to get into them again. This was also the first time I have used Russ Croman's Sigma Reject Plugin for Maxim DL. It is a lot more convenient to use a plugin than a standalone program for sigma combining as I have been doing for the past two years. So far the convenience factor is really high, so I will be trying it on some more images. Thank you, Russ, for making a very nice program that is easier to use than the standalone alternative. The LRGB filters are not so bad after all. I might even get to like them once I get used to them again. |
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