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turner_andi posted a photo:
A few 7 minute exposures at ISO 800.
Modded Canon 20D, Astrotrac, Pentax 75 SDHF
Amazed at the length of the exposures I managed here with the 500mm lens. Disappointingly it also seems that at this length of exposure the nearby streetlight begins to rear its ugly head :o(
So to make the most of a bad thing I rotated the image so the street light is giving the bubble a push.
turner_andi posted a photo:
jon_beard posted a photo:
maash fascinating posted a photo:
maash fascinating posted a photo:
maash fascinating posted a photo:
maash fascinating posted a photo:
maash fascinating posted a photo:
Rob Victory posted a photo:
Cygnus area of the Milkyway
The bright star center right is Vega
Shot from my Deck
ISO 3200
Exposure 30sec
F-stop 3.5
18mm
jasmel90 posted a photo:
First light for my new ATIK 320E!!! I just received it today, and of course Mother Nature threw her best at me - but I was NOT to be denied (I vowed to shoot the neighboring town's water tower if I had to!) There were puffy clouds going over all night (about 40% cloud cover) together with constant 20mph gusting winds (every 20 or so sec) - not very good conditions for long exposure work.
This caused me to have to reduce my subs...to a ridiculously short 3 seconds each. Yea it's crazy but I took Lum=100x3s, R=50x3s, G=50x3s, and B=50x3. then I threw out all the subs affected by the wind gusts and clouds, which turned out to be about 25% of them. leaving a total of 9min 22s of data split among LRGB channels. Don't get me wrong, this image is nothing to write home about, I know, but for 9min of data using 3s subs, I'm pretty happy with how well the new setup performed. I'm com'n from a Meade DSI2pro and the ATIK320E was completely free of warm/hot pixels, even at 90s subs (which I started out trying to get, but it was completely useless with the wind!) I suppose most of you have decent camera's and are used to this low level of noise, but I am currently amazed at it! Also, if the wind had not been around, I could've taken longer subs and used Ha filter to keep the stars tighter/smaller.
As it was the first night of DSO work with my new equipment, a few items popped up which need some work. First off, my finder scope that I'm going to use as my guidescope came loose as one of the screws stripped out...bummer. Next, I found some slight coma in my image, which i'll have to work out by adjusting the spacing between the scope, f/3.3 reducer, and camera - although this may be difficult as I'm trying to squeeze in a filter wheel. Also a bit of a bug is that despite processing the R, G, and B data exactly the same, somehow the image here has a green cast...is that an expected result (light pollution)? all the images I find online show the core and inner part of the ring as blue, fading to yellow then finally red on the outer part of the ring. Anyhow, I've never done LRGB with DSO targets before, so I'm sure I have some learning ahead of me. If anyone has some advice for getting good color balance, I'd love some help!
Shot with Celestron 8"sct, CGEM mount, f/3.3 focal reducer, Astronomiks LRGB filters, and an ATIK 320E camera Stacked with DeepSkyStacker, LRGB aligned with Registax, post-processing in PSP7.
Joseph Brimacombe posted a photo:
Details in image. Taken from New Mexico Skies. SN Mag 17.7 L. FITS file available on request.
Joel Owens posted a photo:
Joseph Brimacombe posted a photo:
Details in image. Taken from Coral Towers Observatory. SN Mag 18.6 R. FITS file available on request.
Image from Aug 29: www.flickr.com/photos/43846774@N02/4941272025/
fbarz posted a photo:
A 20*60secondes trial on m27 with AM130+dmk41 colorized with an old shoot (C6sc+350D).
fbarz posted a photo:
M13 with ed80 f6 + dmk41.
I have removed sky background because it was too much noisy, so the rendering is somewhat space ...
triumphαnt posted a photo:
i love astronomy
kudos if you can find the three constellations in the summer triange and the milky way
you really need to view large
also +7 in comments
Brian Clayton posted a photo:
fay.woodford posted a photo:
jon_beard posted a photo:
A response to my friend Jeff's shot: www.flickr.com/photos/jculverhouse/4950575638/ ;)