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Click Image for Larger Version

CTB1 is a very faint supernova remnant in Cassiopeia and is about the same size as the full moon. 

Acquisition Details

SII = 79x10min
Hα = 111x5min+45x10min
OIII = 81x10min

Total = 43hrs 25min


SV152 Refractor @ f/8 Moravian G3-16200
Atik EFW2 Filter Wheel Astrodon SII/Ha/OIII Mach1GTO CP4

Narrowband image in Hubble palette
SII (red)= 14x20min
Ha (green)= 14x20min
OIII (blue)= 16x30min Total = 17hrs 20min
RGB for stars=8x10min each