Big Dob Astrophotography

[Zubenel (Wes)]

Lets face it . Big Dobs were built for Visual observation so why would I think i can do AP with this beasty? I think I got the Bug!! I've cobbled together an Olympus Pen E-P-M2 4/3 mini at prime focus, unguided , with "Zamar" my Adopted 20" SDM /Obsession F5 Classic .
70 lights @ 2 sec each and some darks stacked in Sequestor from the outer burbs of Brisbane. I am a hack at post ed where I used Gimp . This looks a bit blue to me but when I play with the "Curves" it looks worse. However when I first looked at the result immediately after stacking the Bright bar blew me away. Then I received the current sky and Tel today and blow me down with a feather I see it on page 57. I didn't know its name until today !! Anyway here's my rendition of M42 ... You decide

[doppler (Rick)]

Looks good to me (apart from the blue cast). 2 sec exposures, what a light bucket! You can't beat a big scope for resolution either, you've captured the Trapezium cluster nicely. https://en.wikipedia.org/wiki/Trapezium_Cluster
You could have a bit of fun with that if you could get it on to a big motorized eq mount. Well done.

[Camelopardalis (Dunk)]

Nice one Wes on an equatorial platform that’s be a lot of fun with the current breed of astro cams for electronically assisted viewing or (gasp) imaging. Drool.

[rustigsmed (Russell)]

yep big dobs can do the business alright, nice shot.

see here what can be done with the new cooled cmos cameras and one second subs https://www.cloudynights.com/topic/5...si1600mm-cool/

[Zubenel (Wes)]

Thanks Guys for the kind remarks. I have had another crack at the standard Candle . Which I will post. Cheers.