Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 28 Dec 2011 (Wednesday) 22:06
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

star trails

 
SouthernShooterZ71
Member
Avatar
160 posts
Joined May 2011
Location: Greensboro, North Carolina
     
Dec 28, 2011 22:06 |  #1

I see alot of pictures where the stars apear to not have any trail at all.. .

How are you doing this?.... I love taking night pictures with say a tree or barn and the stars in the sky. but no matter what seem that my stars always have trails ... yet most everyone else does not?

At what exposure length do you start getting into trailing stars?

I just do not understand how some do this?

help please :) I love to learn


5DII l
Please visit my - Flickr (external link)

  
  LOG IN TO REPLY
nvchad2
Senior Member
Avatar
329 posts
Joined Apr 2010
     
Dec 28, 2011 22:41 |  #2

SouthernShooterZ71 wrote in post #13612907 (external link)
I see alot of pictures where the stars apear to not have any trail at all.. .

How are you doing this?.... I love taking night pictures with say a tree or barn and the stars in the sky. but no matter what seem that my stars always have trails ... yet most everyone else does not?

At what exposure length do you start getting into trailing stars?

I just do not understand how some do this?

help please :) I love to learn

Completely new to astrophotography myself, I can't help much. But I think theyre "stacking" photos. Read the first sticky in Talk about Astronomy and Celestial. That explains a lot.


Sony a300

Sony: 50/f1.8 | 18-55/f3.5 | 18-70/f3.5
Sigma: 70-300/f4
Opteka: 500/f8

  
  LOG IN TO REPLY
cyberon
Senior Member
Avatar
540 posts
Likes: 1
Joined Jan 2010
Location: Perth, Australia
     
Dec 29, 2011 04:34 |  #3

SouthernShooterZ71 wrote in post #13612907 (external link)
I see alot of pictures where the stars apear to not have any trail at all.. .

How are you doing this?.... I love taking night pictures with say a tree or barn and the stars in the sky. but no matter what seem that my stars always have trails ... yet most everyone else does not?

At what exposure length do you start getting into trailing stars?

I just do not understand how some do this?

help please :) I love to learn

To do this sort of shots, you need to use the widest lens you have, the wider it is, the longer you have until the stars starts showing up as trails on your image. Typically say 18mm on a crop sensor camera, you have about 25 to 30 seconds.

Next because you are trying to gather as much of the dim light as you can, you need to use the widest aperture that you have at the highest ISO you are comfortable with before noise becomes too unbearable.

Set your camera on a tripod, use live view at the maximum magnification to focus and then shoot preferably with a remote release.

All the above should get you started in the right direction.


500D, Speedlite 430EX II, Lens : 15-85mm; 50mm F1.8 II; 100mm F2.8L IS Macro; 70-200mm F4L; Samyang 8mm F3.5
U/W : G11, OEM Housing, Inon S2000, Inon D4 Tray, Inon UCL-165 Close up lens
Astro : Modded 1100D, ES 80ED, Skywatcher HEQ5 Mount, Astrotrac TT320X-AG, Astronomik CLS Clip in filter

  
  LOG IN TO REPLY
archer1960
Goldmember
Avatar
4,930 posts
Gallery: 6 photos
Likes: 81
Joined Jul 2010
     
Dec 29, 2011 06:42 |  #4

30 sec at 18mm will be pushing it for trailing. As a starting point, divide 500 by your focal length; I use 400/fl to be conservative. You can go longer if you're shooting things near the poles than if you're shooting something near the celestial equator.


Gripped 7D, gripped, full-spectrum modfied T1i (500D), SX50HS, A2E film body, Tamzooka (150-600), Tamron 90mm/2.8 VC (ver 2), Tamron 18-270 VC, Canon FD 100 f/4.0 macro, Canon 24-105 f/4L,Canon EF 200 f/2.8LII, Canon 85 f/1.8, Tamron Adaptall 2 90mmf/2.5 Macro, Tokina 11-16, Canon EX-430 flash, Vivitar DF-383 flash, Astro-Tech AT6RC and Celestron NexStar 102 GT telescopes, various other semi-crappy manual lenses and stuff.

  
  LOG IN TO REPLY
tkerr
Goldmember
Avatar
3,042 posts
Likes: 2
Joined Mar 2010
Location: Hubert, North Carolina, USA.
     
Dec 30, 2011 13:08 |  #5

archer1960 wrote in post #13614192 (external link)
30 sec at 18mm will be pushing it for trailing. As a starting point, divide 500 by your focal length; I use 400/fl to be conservative. You can go longer if you're shooting things near the poles than if you're shooting something near the celestial equator.

You can go a little longer if you're using a FF body too, In which then you might try dividing 600 by the focal length.
That's not a sure fire way to get there, but it will get you really close.


Tim Kerr
Money Talks, But all I hear mine saying is, Goodbye!
F1, try it you'll like it.

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

1,015 views & 0 likes for this thread
star trails
FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is Tom Ekblad
888 guests, 356 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.