I know I've put up a lot of shots of this structure in the last couple of weeks, but it continues to fascinate me, and while this isn't quite what I was after I'm quite pleased with the way it turned out – not least because I froze half to death taking it. There was a 10-mph wind blowing and it was about 3°C, so by the time I'd taken a few exposures I was really cold.

If I were to do this shot again (and I probably will) I would have gone for a longer exposure, mostly because I had no idea that the star trails would be this visible at six minutes. I don't know what I was expecting, but they did surprise me a bit. Also, this shot was about one stop under-exposed; i.e. it should have been a 12 minute exposure, but I miscalculated. I think something around a 48 minute exposure would be interesting, which, under the same lighting conditions as yesterday would mean an aperture of f/16. However, I think this would probably mess up the star trails so will probably need to re-shoot when there's less of a moon.

Oh, and hopefully this one will be a bit better received than yesterday's shot ;-)

capture date
camera
lens
focal length
aperture
shutter speed
shooting mode
exposure bias
metering mode
ISO
flash
image quality
RAW converter
cropped?
8.17pm on 28/11/04
Canon 20D
EF 17-40 f/4L USM
17mm (27mm equiv.)
f/8.0
6m 2s
manual
+0.0
evaluative
100
no
RAW
Photoshop CS
rotated 1.21°
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one point five one degrees / 29 November, 2004 [click for previous image: night rails]
one point five one degrees / 29 November, 2004 [click for next image: en-route to strange places]
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