This image was taken under bright moonlight to contend with. I was using my 10 inch reflector at f/4.8, a Vixen Atlux mount, PHD auto-guiding and an Atik 383L mono CCD camera.
I captured 5 minute sub-frames with matching dark-frames and used flat-fields to reduce the effect of vignetting in the final image.
The total exposure times were 45 minutes using an IDAS filter for luminance, with the camera set on x1 bin mode. The colour data however, were captured with the camera set to x2 bin mode, using exposure times of 10 minutes with a H-alpha filter, 10 minutes using an OIII filter, and 5 minutes using a blue filter.
NGC3115 The Spindle galaxy
