Showing posts with label M81. Show all posts
Showing posts with label M81. Show all posts
Monday, November 22, 2010
Tuesday, March 16, 2010
Monday, March 08, 2010
M81 & M82 7th March 2010
Widefield view taken with my Takahashi. NGC 2976 & NGC 3077 are also in the frame, bottom and top right.
Yet another version below of M81 taken the other night (prime focus C9.25), with better gradient removal.
Tip; the background black should never be 0 in ANY of the RGB channels in Phototshop or whatever you use. See below.
RGB Info box.
Yet another version below of M81 taken the other night (prime focus C9.25), with better gradient removal.
Tip; the background black should never be 0 in ANY of the RGB channels in Phototshop or whatever you use. See below.
RGB Info box.
Sunday, March 07, 2010
M81
Been messing with M81 tonight, here's a couple of version, 1hour 20mins worth @ ISO800 using the C9.25.
... and another version.
... and another version.
Saturday, January 03, 2009
M81
Bodes galaxy from early this morning session. 34 x 2 min exposures. C9.25 prime focus.
It was really cold last night -3°C.
It was really cold last night -3°C.
Sunday, December 07, 2008
Monday, January 14, 2008
Saturday, January 12, 2008
M81 capturing... remotely.
Here's a view of my desktop whilst capturing M81. Using the EOS remote utility (with timer) on my PC in the observatory, Dameware to connect remotely and Deepskystacker Live on my main PC indoors stacking the images on the fly... to see what I've got.
And I'm in the warm ;-)
C9.25, Prime Focus, Canon EOS 400D, unguided.
And I'm in the warm ;-)
C9.25, Prime Focus, Canon EOS 400D, unguided.
Wednesday, January 09, 2008
M81... first half hearted attempt
I'm quite pleased with this.
I thought I'd have a go at a classic spiral galaxy, so I tried Messier 81 (M81, NGC 3031) in Ursa Major.
The clouds were beginning to roll in so I quickly found it using the Celestron 'Precise GOTO' technique, and it was bang on. This part of the sky for me is pointing towards Swindon town centre and suffers from light pollution, so I just rattled off a half dozen 30sec 1600ISO subs, which was all I had time for. The subs didn't look that good, so I wasn't expecting too much from them.
But I've just processed them using dark, flats and biases from my M1 Crab Nebula session (should've done some on the night but I couldn't be arsed). I was amazed how well it turned out, all things considered.
I'll dispense with the focal reducer next time and see if I can push it up to 1 minute subs without guiding, and do a range of ISO's with some proper darks etc. ;-)
Six subs, what a camera!
Here's a nice Hubble view.
I thought I'd have a go at a classic spiral galaxy, so I tried Messier 81 (M81, NGC 3031) in Ursa Major.
The clouds were beginning to roll in so I quickly found it using the Celestron 'Precise GOTO' technique, and it was bang on. This part of the sky for me is pointing towards Swindon town centre and suffers from light pollution, so I just rattled off a half dozen 30sec 1600ISO subs, which was all I had time for. The subs didn't look that good, so I wasn't expecting too much from them.
But I've just processed them using dark, flats and biases from my M1 Crab Nebula session (should've done some on the night but I couldn't be arsed). I was amazed how well it turned out, all things considered.
I'll dispense with the focal reducer next time and see if I can push it up to 1 minute subs without guiding, and do a range of ISO's with some proper darks etc. ;-)
Six subs, what a camera!
Here's a nice Hubble view.
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