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TrekPic
5th of October 2008 (Sun), 00:10
Here is the North star with shutter time of 30 minutes.

http://farm4.static.flickr.com/3140/2913195573_a086d1f808_b.jpg
bowtie`
5th of October 2008 (Sun), 21:13
Nice image TrekPic. Is that taken from inside the city of Waterloo? If it is, it is a good pic with light pollution of a fair sized city. If you clone out the hot/cold/dead pixels it looks like it would be nice image. If you ever get a chance and can get hold of a wide angle lens, circum-polar shots look pretty good. And if you can get out in the rural areas away from the light pollution even better.

Here is a circum-polar shot from last night here in Indiana using a 24mm-70mm lens.

Camera 5D, ISO 125, TV 1915 sec. ( 31.9 minutes), AV 6.3, Lens 24-70mm @24mm
TrekPic
5th of October 2008 (Sun), 21:25
Very cool.
This was only the 2nd night I tried, now my remote switch from
ebay crapped out on me. Looking to get a nice one now. :D
Adrena1in
8th of October 2008 (Wed), 04:07
Is that a single 30-minute exposure?
bowtie`
8th of October 2008 (Wed), 08:07
Is that a single 30-minute exposure?

Are you refering to TrekPic's or my image? If mine, I apologize for not putting this info down. It is a single 30+ minute image with the in-camera noise reduction on.
TrekPic
9th of October 2008 (Thu), 14:52
Mine was a single 30 minute exposure, ISO100.
Adrena1in
14th of October 2008 (Tue), 06:26
I was referring to TrekPics, but it's good to get details of all images. I only asked because I tend to get lots of noise and light-pollution on very long exposures, but then I've not tried many. I put my camera to ISO100 and a high f/ value the other night, and took some 10-minute shots. Got hardly anything, so opened the aperture a bit and ended up with some acceptable trails. Stacked two images together to get effectively 20-minutes.......and I was going to post it here, but I can't find it! :rolleyes:
TrekPic
14th of October 2008 (Tue), 17:48
I was referring to TrekPics, but it's good to get details of all images. I only asked because I tend to get lots of noise and light-pollution on very long exposures, but then I've not tried many. I put my camera to ISO100 and a high f/ value the other night, and took some 10-minute shots. Got hardly anything, so opened the aperture a bit and ended up with some acceptable trails. Stacked two images together to get effectively 20-minutes.......and I was going to post it here, but I can't find it! :rolleyes:

LOL :lol: