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Kenmare Star Trails
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SO I have been threatening to give this a try for some time now and I guess its going to be trial and error for a while. Apprciate ur thoughts / comments and any advice relating to camera setting required for these shots?….Should ISO be low to eliminate noise or would you not get away with it in the darkness??.
What makes the trail colours differ per star?This one from from the garden last night BUT I plan to get up to the kerry mountains soon but want to make sure I have perfected and understand the settings before heading up .
Setting for shot
AV 22
ISO 640
focal length 10MM
TV 1364Good try Ras, much better than my one and only attempt. Would love to arrange a PI trip some night to try this, Kerry mountains sound Ideal.
Dave.
i’ve heard of people doing exposures for several hours to get long trails…. haven’t ever tried myself though. i am amazed just how fast they go, even 30 secs leaves a few mm.
I think the color has to do with the type of chemicals the stars are composed of and their distance from earth, different colors in the spectrum fall off at different rates and so some parts of the color don’t make it if you know what i mean (although i may be totally wrong) the north star is the one they all (appear to) rotate around
i would be inclined to try low ISO and go for longer shutter speed as it doesn’t affect digital in the same way as film
i don’t think the foreground works here at all but i appreciate that thats not what the shot is about for the moment.
Cool pic!
Widest aperture to let as much starlight in as possible and low aperture to cut down on any ambient light. If theres any light pollution, you’ll pick it up and see glowing orange skies at high apertures. Your sky is nice and black there though, being a city dweller I’m jealous! :)
You can also minimise noise by layering several 30 sec exposures (or longer depending on the noise levels) to build up your trails.
The difference in colour is down to a number of factors including temperature, the star’s composition and Doppler shifting in the same way as an ambulance siren frequency shifts up or down depending on whether its coming toward you or moving away.
Did you use your flash to light the foreground? Its a bit distracting on the steps, maybe try just “painting” some light in with a torch next time, might be a bit softer.
http://dslrtraining.co.za/dslr_articles.php” onclick=”window.open(this.href);return false;. This article has some good info. You can register with facebook details and download the article. Alos have a look at outdoorphoto.co.za some very good photos on ther with EXIF info attached. Also search forums for advice. Hope this helps.
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