Antares and M4 region

Prickly · #1 09-06-2008, 01:19 PM

Hi Folks,

Heres a 5x1min shot of antares and M4 Michael (tilt) and I took Saturday night

Tamron 300mm lens @ f4
Unmodded 350D ISO800
Eq6 pro
Tracked but not guided.
Stacked in deep sky stacker
Processing in pixinsight LE (artificial darkframe, noise reduction)
Histograms and colour curves in the gimp.

Theres some distorsion in the corners from the canon FD to EOS lens adapter unfortunately.

Cheers
David

iceman (Mike) · #2 09-06-2008, 01:28 PM

Need an attachment

Prickly · #3 09-06-2008, 01:50 PM

Oops - thanks Mike. Yep it helps having the image!

Cheers
David

AlexN · #4 09-06-2008, 04:47 PM

nice shot, could do with some adjustment of curves/black point.

What tamron lens was that? a prime 300mm F/4? if so "AWESOME!" i wasnt aware of anything like that in tamrons range.

Prickly · #5 09-06-2008, 05:27 PM

Hi Alex,

Actually its a 300mm f2.8 but I stopped it down. Its an old manual lens and they dont reach focus at infinite unless the adapter to fit it to the EOS has glass in it (some sort of extender I imagine). I think this has affected the quality slightly.

Still, its nice to be able to use it again.

Thanks for the suggestion.

Cheers
David

AlexN · #6 09-06-2008, 05:35 PM

I //Need// a 300mm 2.8..

Robert_T · #7 09-06-2008, 07:19 PM

Hi David, looks great, seems we were imaging the same region at much the same time on Sat night.

I was using a 560mm ED80 with a 0.8x reducer so ~450mm. I could have used your wider fov

Prickly · #8 09-06-2008, 08:36 PM

Hi Robert,

I noticed you had a similar shot. I must say those ED80s are terrific units.
I really like the way you have managed to get the bluish colour in M4. I could only really get the golden colour of the nebula. When I pushed the blue it seemed to reduce the yellow nebula. You've done a terrific job.

Cheers
David