John.R.Taylor's photostream  

Using CCD Inspector to collimate on a defocused star. Close?

Still just testing out the potential on the 6"RC - I didn't throw too much time on this as I'm going to scrap all the data and start again after collimating the scope properly.

This is made up of just 36 mins in each RGB + Luminance from the other night.

I was reading an discussion yesterday about Luminance and whether to use it or not, why not just shoot more RGB? Thoughts?

Second test run on the Altair Astro 6" RC. I still have poor star shapes, this I'm convinced is due to side-by-side bar flexture. Even so, this is my best effort at M101 yet!

The RC has a second mounting rail on the top, so with an adapter from Altair I can piggy back the guide scope and take the side-by-side out of the equation.

60 x 3 minute Lum

Altair Astro 6"RC & Atik 314l+. Pixinsight & CS5

First imaging run with the Altair Astro 6" RC. This is a spiral galaxy viewed side on, also one of the Leo triplet galaxies.

30 x5 minute luminance subs.

Atik 314l+, x 0.8 reducer. Processed in Pixinsight.

Flat frame analysis of my 6"RC & Atik 314l+. Only 4% vignette to the edge of frame with the WO ff/fr x0.8 reducer.

Baader Lum filter.