Hi Guys
IC4685 Emission/Reflection Nebula in Sagittarius, in Colour Mapped Narrowband, using 3nm filters.
Big
Here
The view also includes NGC6559, IC1275 and IC1274.
Taken on an RCOS 10" RC Scope at f9, SBIG STXL6303E Camera and PME mount at itelescopes Siding Spring Observatory.
Processed with CCDstack, Star Tools and Photoshop. 50 hrs Total exposure time.
Mapped as Ha Ha OIII
Ha 31hrs, 40min subs bin1. OIII 19hrs, 40min subs bin2
There are so many different colour renditions on the interwebs, and Georges recent excellent Ha RGB, at pretty much the same orientation is very interesting to compare with straight NB. IC4685 suits RGB and NB equally methinks
.