AstronomyUkraine Posted May 15 Share Posted May 15 (edited) SH2-174 is a very faint planetary nebula in the constellation of Cepheus. There is a total of 53 hours of data in this target. 34 Ha, 16 OIII and 3 hours of RGB stars. Even with so much data, this object is not easy to process, the signal is very weak in both Ha and OIII. After trying many formula and methods of combining, the one that worked best for me, was stretching the channels first, then combining using the Foraxx formula. R - Ha G - ((OIII*Ha)^~(OIII*Ha))*Ha + ~((OIII*Ha)^~(OIII*Ha))*OIII B - OIII For anyone wanting to get away from galaxy season, this is the ideal object. It is available all year round, providing you have a clear view North. Edited May 15 by AstronomyUkraine 6 Quote Link to comment Share on other sites More sharing options...
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