#1  
Old 18-08-2009, 02:06 PM
Lumen Miner's Avatar
Lumen Miner (Mitchell)
Registered User

Lumen Miner is offline
 
Join Date: Jun 2009
Location: Beecroft, Sydney
Posts: 825
Star trails- How to capture?

Spent an hour last night, out trying to capture some star trails.

I ended up with an over-exposed shot, which I can't get anything out of.

I suspect I need to stop my lens right down, to capture an hour long exposure. Would that be correct?

I will try again tonight, but was hoping on some clarification, before spending another hour at it.

Thanks for you help.
Attached Thumbnails
Click for full-size image (star trail.JPG)
78.1 KB27 views
Reply With Quote
  #2  
Old 18-08-2009, 02:10 PM
erick's Avatar
erick (Eric)
Starcatcher

erick is offline
 
Join Date: Dec 2006
Location: Shoalhaven Heads
Posts: 8,469
Many many shorter exposures then put together. I'll just find a useful site.


Edit: Here it is:- http://www.startrails.de/html/software.html

I presume you have a digital camera?

Film is done by single long exposure.

See also:- http://www.iceinspace.com.au/forum/s...ad.php?t=39947
Reply With Quote
  #3  
Old 18-08-2009, 03:23 PM
Lumen Miner's Avatar
Lumen Miner (Mitchell)
Registered User

Lumen Miner is offline
 
Join Date: Jun 2009
Location: Beecroft, Sydney
Posts: 825
Quote:
Originally Posted by erick View Post
Many many shorter exposures then put together. I'll just find a useful site.


Edit: Here it is:- http://www.startrails.de/html/software.html

I presume you have a digital camera?

Film is done by single long exposure.

See also:- http://www.iceinspace.com.au/forum/s...ad.php?t=39947
Ok, that explains it...

Yes, I have a dslr 350d.


Hmmm, that "star trails" won't run on my comp for some reason....

Is there any other programs on the net which can stack for trails....

Deep sky won't do that, will it? It will align them I think....?
Reply With Quote
  #4  
Old 18-08-2009, 06:25 PM
Lumen Miner's Avatar
Lumen Miner (Mitchell)
Registered User

Lumen Miner is offline
 
Join Date: Jun 2009
Location: Beecroft, Sydney
Posts: 825
OK, i'm an hour into a another go... I found another program that works, on my silly computer...

I am taking 30second frames.
Then I will stack them...

Hopefully this attempt works!!

Edit~ It's amazing the amount of air traffic, that is over Sydney!!
This shot is going to end up, with alot of cross light mess from them....

I won't be able to remove those frames will I? If I take them out, I'll get gaps I guess..
Damn..


Edit2~ Well yes I was right, bit of air traffic.
Did manage to capture 2 pieces of space junk, so that was a bonus. See deep sky image forum for my results.


Thanks Eric!!!

Last edited by Lumen Miner; 18-08-2009 at 07:34 PM.
Reply With Quote
  #5  
Old 18-08-2009, 08:16 PM
rastis95's Avatar
rastis95 (Scott)
Cant wait for clear skies

rastis95 is offline
 
Join Date: Aug 2008
Location: Tumut N.S.W.
Posts: 133
Hi Mitch

Im in the same boat as you at the moment. Ive been taking up to 6 min exposures with good results, starting to get some light pollution though, haven't stopped the lens down yet to try and counter act it. What iso are you using.

Cheers
Scott
Reply With Quote
  #6  
Old 19-08-2009, 01:10 AM
Lumen Miner's Avatar
Lumen Miner (Mitchell)
Registered User

Lumen Miner is offline
 
Join Date: Jun 2009
Location: Beecroft, Sydney
Posts: 825
Quote:
Originally Posted by rastis95 View Post
Hi Mitch

Im in the same boat as you at the moment. Ive been taking up to 6 min exposures with good results, starting to get some light pollution though, haven't stopped the lens down yet to try and counter act it. What iso are you using.

Cheers
Scott
I try and keep it low, 400ish.

I've taken fond of 30sec exposures.... That way I can set the camera up on remote continuous and come back inside.
Reply With Quote
  #7  
Old 19-08-2009, 04:40 AM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 5,950
You can try with lower ISO setting as well
Reply With Quote
  #8  
Old 20-08-2009, 10:50 AM
CoombellKid
Registered User

CoombellKid is offline
 
Join Date: May 2006
Posts: 2,590
Here's a shot I took with my 450D last night before and after processing.
It's a single exposure that was intended to go for about 40minites, but
the operator fell asleep. I forgot take any darks and used a 301 second
dark made a few weeks back. Apart from that no other processing.

18mm lens set to f/8.0
ISO 400
Exposure 4456 seconds
RAW mode

The foreground is being lit up by two street lights, one just out of view
to the right.

Cheers,CS
Attached Thumbnails
Click for full-size image (star_trails_raw.jpg)
195.6 KB23 views
Click for full-size image (star_trails_processed.jpg)
151.7 KB29 views
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 06:34 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
SkyWatcher Australia
Advertisement
OzScopes Authorised Dealer
Advertisement
Bintel
Advertisement
Meade Australia
Advertisement
Celestron Australia
Advertisement
NexDome Observatories
Advertisement
Lunatico Astronomical
Advertisement
Astronomy and Electronics Centre
Advertisement