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01-19-2012, 05:57 AM   #16
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If you are trying to get star trails, Registrax is not what you want to use. If you don't have Photoshop, you can use this app: Startrails application

These two shots look like there is nothing in them. Do the individual shots show any stars?

01-19-2012, 05:37 PM   #17
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awesome. I do have photoshop however my mac barely copes with some of the basic processing I do with it. The images did have stars in them when I looked, but they just got blanked out after it processed. I just read an article on how to do star trails in 30 second shots and I didn't realise I needed to expose the first shot how I wanted it to look at the end; if that makes sense. If tonight clears up I will try some more shots at different settings and then see how they turn out.
01-19-2012, 06:12 PM   #18
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QuoteOriginally posted by alohadave Quote
you can use this app: Startrails application
Woohoo! I think the problem is that I was using the wrong program *facepalm*. I used the Startrails application that you mentioned and it worked like a charm. I took a dark frame but I dont know if it worked or not because there are some white spots in places. I have posted screen shots below. Also (sorry I keep asking questions) is there any way to get rid of the little gaps in the star trail where the different frames have been put together?

Name:  StarTrail1.jpg
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Name:  StarTrail2.jpg
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Size:  14.3 KB
01-19-2012, 07:34 PM   #19
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Those look much better.

The gaps are the primary drawback to the method. It's a tradeoff in image noise and gaps. Since the picture is, in effect, 30 seconds (or however long your exposures are), shot noise is pretty low, but you have the gaps between frames. If you took a single shot that was 5 minutes long, you have a continuous line, but you have bigger noise issues to deal with.

Try opening your aperture up. The stars are your only source of light in these shots, and closing the aperture restricts the light from fainter stars. Wider shots that show some framing or anchoring will give you a scene rather than just curved lines.

01-19-2012, 07:39 PM   #20
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That makes sense. I will post a few photos tonight if the sky is good. Cheers
01-23-2012, 02:38 PM   #21
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FInally!

OKay so last night we had the first 'clear' night since I last wrote here. Thanks everyone for their help once again, otherwise i wouldn't have been able to do these images. The first one went for 1 hour over 120, 30 seconds exposures at ISO 400 and f5.6. I did take another one but I had to stop it early because of a cloud. Hope you like it


01-23-2012, 02:57 PM   #22
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Looks great! The small version doesn't do it justice.
01-23-2012, 03:04 PM   #23
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QuoteOriginally posted by baro-nite Quote
The small version doesn't do it justice.
Thanks! Im pretty sure if you click it itll take you to the bigger flickr version.

01-23-2012, 03:08 PM   #24
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QuoteOriginally posted by Robtography Quote
Im pretty sure if you click it itll take you to the bigger flickr version.
Yep, that's what I meant. Well worth clicking through to take a look.
01-23-2012, 04:37 PM   #25
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Nice image, looks like a tunnel through space.
01-23-2012, 05:12 PM   #26
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Congrats, looks good.
01-24-2012, 07:32 AM   #27
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Thanks Everyone! Here is another that I compiled tonight. 1 and a half hours! Thanks again everyone!


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