Sergei Golyshev (AFK during workdays)
M67 / NGC 2682: Mr. Crayfish, what's that in your claw?
Boring@70 mm constellation of Cancer culminates short before sunset these days. Threatened by clouds predictions towards midnight I decided to spend my time on its two open clusters. Well... This one turns out at 3-- or 2+ out of possible 5.
Aquisition time: 13.04.2013 around 22:00:00 MSK (GMT+4).
Equipment:
Canon EF 70-200 f/2.8L lens + Canon EF 2x III extender on EOS 60D mounted on Celestron CG-4 GEM (German equatorial mount) with RA drive.
Aperture 71 mm
Focal length 400 mm
Tv = 30 seconds
Av = f/5,6
ISO 400
Exposures: 64 + 16 dark frames
Processing: contrast was set to "linear", 16 bit TIFF were stacked in DeepSkyStacker, contrast colors adjusted in Photoshop. Image scaled down 50% to 1024x1024 (cheat!).
Notes: I have paid attention to the colours. At least I'm personally pleased with this aspect of the picture. And I'll redo it with a telescope this year or the next.
M67 / NGC 2682: Mr. Crayfish, what's that in your claw?
Boring@70 mm constellation of Cancer culminates short before sunset these days. Threatened by clouds predictions towards midnight I decided to spend my time on its two open clusters. Well... This one turns out at 3-- or 2+ out of possible 5.
Aquisition time: 13.04.2013 around 22:00:00 MSK (GMT+4).
Equipment:
Canon EF 70-200 f/2.8L lens + Canon EF 2x III extender on EOS 60D mounted on Celestron CG-4 GEM (German equatorial mount) with RA drive.
Aperture 71 mm
Focal length 400 mm
Tv = 30 seconds
Av = f/5,6
ISO 400
Exposures: 64 + 16 dark frames
Processing: contrast was set to "linear", 16 bit TIFF were stacked in DeepSkyStacker, contrast colors adjusted in Photoshop. Image scaled down 50% to 1024x1024 (cheat!).
Notes: I have paid attention to the colours. At least I'm personally pleased with this aspect of the picture. And I'll redo it with a telescope this year or the next.