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Old     (dakid)      Join Date: Feb 2001       08-13-2010, 7:43 AM Reply   
Old     (wakedad33)      Join Date: Oct 2005       08-13-2010, 9:51 AM Reply   
Joe, this is all I got, saw lots of them just never where my camera was pointing. Any idea what I'm doing wrong Focusing?

Tripod & shutter release
50mm
f/2.5
20 second expoisure
ISO 1250
manual
Exposure comp 0
Attached Images
 
Old     (alans)      Join Date: Aug 2005       08-13-2010, 9:59 AM Reply   
Much lower ISO 100 or 200 (gets rid of the noise and allows for longer exposure)
Much smaller aperture F8-F11 (Allows for much greater depth of field and alows for longer exposure)
Much longer exposure needed. If you want to see the movement of the earth.
Old     (dakid)      Join Date: Feb 2001       08-13-2010, 9:26 PM Reply   
Quote:
Originally Posted by alans View Post
Much smaller aperture F8-F11 (Allows for much greater depth of field and alows for longer exposure)
isn't that backwards?
Old     (cdhayes2)      Join Date: Jul 2009       08-13-2010, 10:45 AM Reply   
Ok, I'm new to DSLR's. How do I make my Canon T1i take longer than a 30 sec exposure? After cycling through and passing 30 seconds it says bulb? I tried that, but I have to hold the button..?
Old     (wakedad33)      Join Date: Oct 2005       08-13-2010, 10:59 AM Reply   
Thanks Alan input, I will try that tonight. I went with 20-25 second exposure to keep from getting the stars trails, looking for just the metor trail.
Old     (barry)      Join Date: Apr 2002       08-13-2010, 11:48 AM Reply   
Randy,
It's slightly out of focus is the only thing you're doing wrong. At 50mm you should be able to pull down 30 second exposures without trails. If you have a wider lens you'll be able to increase the time without showing trails.
is 2.5 as wide as your lens will go?
Old     (wakedad33)      Join Date: Oct 2005       08-13-2010, 12:05 PM Reply   
Thanks Barry, I have a nifty fifty 1.8 I can try, what do you think, manual focus set to infinity?
Old     (barry)      Join Date: Apr 2002       08-13-2010, 12:18 PM Reply   
That Nifty 50 will do great! Yeah, manual focus, but don't rely on infinity,I found I get my best focus by looking through the viewfinder on the brightest star you can find. I always find critical focus to be slightly before infinity. Open that lens up!
Old     (alans)      Join Date: Aug 2005       08-13-2010, 12:22 PM Reply   
Awesome tutorial on shooting still stars. And no, you do not want a large aperture.

Old     (wakedad33)      Join Date: Oct 2005       08-13-2010, 12:42 PM Reply   
Wow, 2 intresting prospectives. I think I will bring 2 camera and try both suggestions, Thanks guys
Old     (barry)      Join Date: Apr 2002       08-13-2010, 2:51 PM Reply   
Alan, can you post some of your work? I'd love to see it.
Old     (dakid)      Join Date: Feb 2001       08-13-2010, 3:35 PM Reply   
randy, to me it just looks out of focus. yeah, you could tone down the iso a bit, but other than that, it's cool.

here's one of the shots from the stack above. (keep in mind, this was shot in the city)

15sec exp
f3.5
iso 320
18mm
Attached Images
 
Old     (barry)      Join Date: Apr 2002       08-13-2010, 8:16 PM Reply   
I hope you don't mind, Randy.
Attached Images
 
Old     (wakedad33)      Join Date: Oct 2005       08-13-2010, 9:02 PM Reply   
Not at all, thanks Berry much better. I'm going to go back out tonight and see what I can get.
Old     (barry)      Join Date: Apr 2002       08-13-2010, 9:19 PM Reply   
You're welcome, Randy.


Joe, cool shot of the Pleiades.
Old     (scott_a)      Join Date: Dec 2002       08-13-2010, 11:24 PM Reply   
Nope...that's correct. F8 gives more depth of field than f2.8, and since F8 lets in less light you'll need to let light in for a longer duration...
Old     (dakid)      Join Date: Feb 2001       08-14-2010, 12:56 AM Reply   
i guess i read that wrong or too fast or whatever. i thought he was saying f8 allows more light in. my bad.
Old     (richd)      Join Date: Oct 2003       08-15-2010, 9:30 AM Reply   
Joe,

What are you shooting all your night shots with?

The backs are just so smooth.
Old     (barry)      Join Date: Apr 2002       08-15-2010, 11:31 AM Reply   
I don' t want to speak for Joe, but if you median combine or average when you're stacking it usually gets very buttery like that.
Old     (dakid)      Join Date: Feb 2001       08-16-2010, 2:09 AM Reply   
barry's right. on the non-stacked pics, noise removal plugins help.

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