After 3 trips to my dark site I managed 1 clear night out of about 11. Oh well thats what it takes sometimes.
TEC180mm fluorite triplet, TEC 3.5 inch dedicated field flattener, Apogee U16M camera at -30C and Apogee filter wheel, Baader filters, Tak NJP mount with AT66ED guide scope and Sbig ST402ME guide camera.
All 10 minute subexposures. Seeing was very good, totally clear, no light pollution,no wind, stable stars and cold (3C).
HaLRGB 120 30 60 60 60 for a total of 5:30.
The 16803 chip goes well with the big refractor.
http://upload.pbase.com/image/115466950
Here's a photo of the setup:
http://www.pbase.com/image/115499554
I have also imaged this area before with an RCOS 12.5 inch and an SBig STL11000XCM one shot colour camera.
http://www.pbase.com/gregbradley/image/83117651
And here is a photo of that setup (scope now owned by Lars);
http://www.pbase.com/gregbradley/image/92279122
Here is a location shot of the area where I image:
http://www.pbase.com/image/115500209
Greg.