Popular Post +Ibbo Posted December 27, 2015 Popular Post Share Posted December 27, 2015 Ha/O3 lots of 30min subs Johnnyaardvark, BAZ, Tweedledee and 7 others 10 Link to comment Share on other sites More sharing options...
philjay Posted December 27, 2015 Share Posted December 27, 2015 Good one Steve, nice to see you got some dso time Link to comment Share on other sites More sharing options...
catman161 Posted December 27, 2015 Share Posted December 27, 2015 Very nice indeed Steve [emoji106]? Link to comment Share on other sites More sharing options...
Tweedledee Posted December 27, 2015 Share Posted December 27, 2015 (edited) That looks superb Steve. Your image inspired me to search out some interesting info about it... The brightest star in the image is 6th mag HD6130, 1500 light years from us and about half a degree from the nebula. Gamma Cassiopiea is just outside the top left of the image. If you imagine the brighter parts of IC63 as an arrow, it points almost directly at Gamma about a third of a degree away. Gamma Cass is actually only several light years away from the nebula, but 600 Ly from us and is responsible for the nebulas visibility. IC63 is an example of a reflection and emission nebula. Gamma Cassiopieas light is both reflected from the interior and emitted by the ionised hydrogen around the brighter edges of the nebula excited by the shock wave from the stars intense outbursts. It is also highly likely that IC63 and nearby IC59, which is not in the image, actually originated from one of Gamma Cassiopieas ancient outbursts. This star is roughly 15 times the diameter and mass of our sun and is 50,000 times as luminous. It is known as an eruptive variable and rotates 150 times faster than our sun, a colossal 300 miles per second at its surface giving it a very pronounced equatorial bulge. From time to time at erratic intervals, it throws off gaseous material. In about 1935 it last underwent an eruptive cycle when it brightened by a third of a magnitude, then rapidly dropped to mag 3.4. Since then it has been brightening gradually and is now nearly back to its usual 2nd magnitude. My new book "The Deep Sky Observer's Guide" say's that IC63 is visible faintly in a 12" to 14" scope as an elongated 8' x 4' patch of nebulosity if viewed with a UHC filter and 2nd mag Gamma is kept out of the field, but I'm sure it will also need a really dark sky. Apparently a 16" to 18" scope is required to see it as a fan shape. Edited December 27, 2015 by Tweedledee Johnnyaardvark 1 Link to comment Share on other sites More sharing options...
+Graham Posted December 27, 2015 Share Posted December 27, 2015 Great to see you back posting images Steve. That is a cracker Link to comment Share on other sites More sharing options...
+Ibbo Posted December 27, 2015 Author Share Posted December 27, 2015 Thanks Nice info Pete all I know is gamma cas is a pita when imaging IC63 & 59 Link to comment Share on other sites More sharing options...
Guest scotttilley6 Posted January 3, 2016 Share Posted January 3, 2016 Cracking Image. Very interesting info from Pete too! Scott Link to comment Share on other sites More sharing options...
Johnnyaardvark Posted January 3, 2016 Share Posted January 3, 2016 Super image Steve and thanks for the info Pete. :-) Link to comment Share on other sites More sharing options...
Stephen Posted January 3, 2016 Share Posted January 3, 2016 That is a great image Steve I like the detail Link to comment Share on other sites More sharing options...
Sheila Posted January 3, 2016 Share Posted January 3, 2016 nice Link to comment Share on other sites More sharing options...
Doc Posted January 3, 2016 Share Posted January 3, 2016 What a great image Steve and an equally great write up Pete. You two should form a double act Link to comment Share on other sites More sharing options...
StuartJPP Posted January 8, 2016 Share Posted January 8, 2016 Nice, I like the glowing part it it on the left. Link to comment Share on other sites More sharing options...
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