M71 and M13 at 0.453"/pixel

[ptc]

M71 (31 minutes total)
http://www.narrowbandimaging.com/m71_mk1sn2_ml4022_camel_page.htm

M13 (30 minutes unfiltered)
http://www.narrowbandimaging.com/m13_mk1sn2_ml4022_camel_page.htm

I tried to get color data but the wind keeps messing me up.

maybe I should try again... I think I have most of it for M13 but still need blue...

[madwayne]

A nice couple of shots Richard, thanks for sharing them. And yes color would be nice :lol:.

Very impressive equipment too, only out done by the view - beautiful looking astro site you have there.

Wayne

[multiweb]

Very cool stuff. How heavy is this Cass of yours?

[ptc]

Hi Marc

Thanks for the comment. I can't remember the exact weight but you can count the number of 18pounder counterweights on the bar....

I seem to remember the frame is about 50# roughly and the primary mirror is about 35#

the camera, filter wheel, guide camera, OAG and secondary mirror plus Robo may be another 15-20# (just guessing)

[jase]

Super oversampled data there Richard, but it has worked a treat. M13 is my pick of the two, though you've done both justice at the Focal length you're operating at. Would be good to see some colour data. Thanks for sharing.

[ptc]

Thanks for the positive comments.

Not to argue but the seeing I get is regularly in the low 1s to mid 1s. The night I shot these it was running about 1.4-1.5"

So my image scale of 0.453"/pixel is not so oversampled. In fact when it runs in the 1.1" range, which happens often, the sampling is just about optimium.