Some simple rules for the AstroTrac Yahoo Group: 1) All equipment problems and warranty issues must be directed to support@... where they will be...
astrotrac@yahoogroups...
Jun 1, 2009 12:38 pm
1714
Hey Steffen, Richard says to put Polaris in the gap between the 2000 line and the 2030 line. My understanding is that with the new reticle change, his PS...
Taken last Saturday night. You can make out Deneb , Vega and Altair in there repective places. Astronomised 40D, Sigma 24mm EX DG and of course astrotrac,...
Hi,my first test of long tracking with only 2 stars in the polarscope. 21 * 3 mn on NGC7000 area Canon 350D, Sigma 100-300mm F4 at 300mm 3 darks, 3 flats, 3...
... Hi Bernard Great image and lovely hydrogen alpha. This is my favourite lens, both terrestrially and astronomically. Its sharp with little chromatic...
Bonsoir Bernard, Excellent image of the North America nebula and the Pelican nebula. The tracking looks spot on! Bon travail! This is a very interesting...
5Minute subs @ Roughly 200mm? It's just i see most people stick to only 3 maybe 4, Why not 5?? (I could get 3.5/4 with the EQ(I know folk have gotten more...
Hi, only just got an Astrotrac, and last night did a couple of test shots using fully extended Manfrotto tripod, PA to 2 stars, and 300mm lens for 5 min. No...
I must admit that I haven't been very ambitious with my choice of focal length and length of exposure. The last image I took a couple of nights back was...
Hey guys, Now I've seen the pictures of the one that Steve made which looks fantastic Does anyone have any specs/diagrams that i could use to make one/similar...
Hello Richard, Perry and Don, Thanks for the compliments. [:D] Hope i can produce a lot more nice pictures with my AT. Next time, i try 6 and 8 min subs....
Rainer, Really good image. 4 min subs at 200mm and no trailing (at least that could be seen from the posted image). Only 52min integration time and yet nice ...
There are several reasons why one would like to keep the subs shorter. 1. Skyfog: If you are in a light polluted area and shoot at f3.5-f4 the background will...
Hy Matts Thanks for your comment. I posted a 100% Detail of the same Data: http://groups.yahoo.com/group/astrotrac/photos/album/1269216097/pic/9886\ 05240/view...
Now i see your problems etc however i tend to be imaging at 5.6-sometimes even 7 since i don't have the best lens and thus 5minute subs are infact nowhere near...
Actually 3min at 200min I consider to be pretty good. As a comparison here is a link to a 20min image with a Canon 40D w 200m lens mounted on top of a ...
Sorry wrong price on the Canon 200mm (ad a zero). Alt use the Canon 85mm f1.8 or the Canon 50mm gives excellent results at f4 or less and great wide field...
Hi Guys Not posted anything for a while now, but believe me apart from doing all the shows I do actually still use a AstroTrac too, I started these two images...
Hello Bernard, Just to acknowledge and thank you for these light pollution maps. I live in the city, so it's nice research to experiment with new, dark...
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