My first multi-day image (M51)
Location= Portland, Downtown
After a lot of trial and error and great help from Neil, I have been able to produce my first multi-day shot.
When you count light, darks, bias and flats, it is about 377 RAW files or about 4Gb of images.
I took the following shot on two different days: 4/22/2010 and 5/14/2010.
I've had to overcome many issues and perfect the process as much as I can. Part of the 5/14/2010 shot is across the Meridian, and the shots were taken at different chip temperates that range from 50F to 70F.
The total exposure is about 3hr. and 34 min (1min. subs). I have about 60 darks, 30 flats, and 30 bias.
ISO = 800
Mount = HEQ5 Pro (Aka Sirius)
Main Telescope = Mak 150 FL=1800
Main Imaging Camera = Canon 40DH
Autoguiding = ST80 + SSAG + PHD
Processing=DSS Sigma-Kappa Clipping, G2V color calibration, Photoshop, Carboni Tools, Gradient XTerminator, Ninja Noise.