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Big Images from Small Telescopes (2)
Big Images from Small Telescopes (2)
IC 1805 a bright nebula in Cassiopeia IC1805 is unusual in that even the usually mega reliable SkyMap Pro doesn't really give a good impression of what the nebula will look like though a telescope. Indeed the first time I imaged IC 1805 I had to double check that I had not mis-identified the object. IC1805 was both larger and more complex than I had imagined. The image was created by median combining 6 x 300 second images taken with a Takahashi Sky 90 with SBIG ST-10MXE and a Hydrogen Alpha filter. http://www.martin-nicholson.info/ic1805/ic1805.htm http://www.martin-nicholson.info/cpm/cpmmaster.htm Martin Nicholson, Daventry, England. http://www.martin-nicholson.info/1/1a.htm Visit the Astronomical Hall of Shame at http://www.geocities.com/queen5658/ |
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Big Images from Small Telescopes (2)
ukastronomy wrote:
Big Images from Small Telescopes (2) IC 1805 a bright nebula in Cassiopeia IC1805 is unusual in that even the usually mega reliable SkyMap Pro doesn't really give a good impression of what the nebula will look like though a telescope. Indeed the first time I imaged IC 1805 I had to double check that I had not mis-identified the object. IC1805 was both larger and more complex than I had imagined. The image was created by median combining 6 x 300 second images taken with a Takahashi Sky 90 with SBIG ST-10MXE and a Hydrogen Alpha filter. http://www.martin-nicholson.info/ic1805/ic1805.htm Hi Martin, Nice Image! But I think the back point might be a bit too low which will hide some of the original data. Also while the ST10 has a much higher quantum efficiency than the STL I still think 5 min subs are too short. That leaves you having to stack beacoup more images to get the same depth. At f/5 I use 30 minute subs in H-Alpha from a light polluted location and go 45 minutes at f/6. Here is my version taken with an FSQ and STL (18x30 minutes) http://www.celestial-images.com/Imag...x1800s-Ha.html Regards Bill |
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