Untitled Document

The California Nebula

Click Image for Larger Version

SV80ST Refractor @ f/4.5 
Riccardi 0.75x Reducer Starlight Xpress Trius SX694 
Atik EFW2 Filter Wheel Astrodon RGB/Ha/OIII Filters 
Losmandy G11 Gemini 2

The is a 4 panel mosaic image.  Each panel consists of:
RGB=2.5hrs each
Total expoure=54hrs

This is a somewhat unusual image combining data from both broadband filters (RGB) and narrowband filters (Ha, OIII).