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Old 28-12-2015, 04:04 PM
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PRejto (Peter)
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Join Date: Jan 2011
Location: Rylstone, NSW, Australia
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Small Galaxy in Lepus NGC 1784

This pretty and not often imaged galaxy in Lepus, NGC 1784, has been a challenge from light polluted sky. It is ca 3 arc-min in size and magnitude 11.7. Even with 8.3 hours of luminance and 8.3 hrs RGB the images are too noisy for display at full frame. At 50% it might be just "OK." I'm not sure it is worth any more time given how few clear nights are on offer. I used my TEC180 for luminance and a Trius-c for RGB on my TEC140 as well as FocusLock on both scopes. Luminance exposures were 12 min and RGB a mixture of 15 and 12 minutes.

The best comparison image I could locate is from the Carnegie-Irvine Galaxy Survey:

http://cgs.obs.carnegiescience.edu/C...s/NGC1784.html

There is an unusual looking object at ca 4:00 o'clock that I believe is a galaxy identified as PGC 958447, magnitude 16.

Thanks for having a look!

Full frame at 50%: http://www.pbase.com/image/162206074

Peter
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