| Joined: | Thu Apr 19th, 2012 |
| Location: | United Kingdom |
| Posts: | 4424 |
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Thanks Iain, I was quite surprised how much colour there is in the apparently black and white image. I think the D3 sensor has something to do with that.
I am having issues with banding on the D3, I need to do some tests to work out what the envelope is. I have cut the exposure times from 30 seconds to 25 and increased the interval between exposures from every 40 seconds to every minute but some of those images I took last Sunday (12th Nov) suffered quite badly with regular horizontal banding. The star stacking software seems to remove the banding together with the aeroplane trails but I would be happier if it wasn't there in the first place. It must be causing artefacts in the finished image.
Hti Mike, light pollution is an issue wherever you are, except in very isolated places or islands in the ocean. Replacing sodium lamps must be an improvement over here they are replacing piecemeal, if a lamp fails it's replaced with LED but otherwise we continue to 'enjoy' an orange cast. On my street it's about half and half! Light pollution from large cities is said to affect up to 200 miles away. In England that means you can almost never get away from it completely. North West Scotland would be the best bet from here, that means a 400 mile drive. Predictable clear skies are something of a rarity in Scotland.
This is why I am so excited about the Stickle Pike location, it's reasonably high and quite dark, except for the Windscale nuclear facility up the coast which is the size of a small town. It's hidden behind hills so it's just a relatively small glow really.
You don't have to go that far Robert. Kielder Forest is one of the best Dark Sky locations in the Uk...
http://www.visitkielder.com/play/discover/dark-skies?gclid=EAIaIQobChMIu6yd8vTR1wIVzzLTCh1M6wTCEAAYAiAAEgIh9fD_BwE
Last edited on Wed Nov 22nd, 2017 04:59 by Eric
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Eric