The new mask is working out well. The shot tonight (M13) produced *very* good stars. I can't tell if there is actually a collimation issue or not, but I'm very pleased with this image.
I'm still deciding whether or not I'm going to keep the scope. Perhaps I'll sell both the ED103S and the R200SS and get something else. We'll see...
I'm including single sub screen captures from the two nights I went out. The 18th and the 19th. The shot from the 18th (Night -1) is sharp and clear. The shot from the 19th (Night-2) is fuzzy at best. It seems like my focus is off, but it's as good as I could get it due to extremely poor seeing. I'd rate the seeing of the 19th perhaps 2/10, maybe even 1/10. It was bad.
Info on the 18th (night 1):
Location: Vancouver, WA
Bortle Scale: 5
It's only 1 hour 10 minutes of exposure time, but the sky was better
then expected which produced sharp stars, good guiding and bits of detail in each sub frame of NGC 6205. The last time I shot this and had similar results was with the R200SS last year about this same time. That image is here. Although the shot isn't as deep, I'm much happier with this new shot then the old one.
Scope: Vixen ED103S
Mount: Orion Sirius EQ-G with GoTo
Guiding: Meade DSI Pro and PHD Guiding
Guide Scope: William Optics ZenithStar 66 SD
Camera: Canon EOS 1000D (Modified)
Special Settings: None
Exposure: 1 hour 10 minutes (7 x 600s)
Processing Software: Acquired in Nebulosity with high dithering, Stacked in Deep Sky Stacker (Kappa-Sigma Clipping for all frames), Levels, Curves, Astronomy Tools, Gradient XTerminator and Noise Ninja in Photoshop
Support Files: 40 flats, 40 bias, one dark used as a bad pixel map
See Gallery below for image