Quote:
Originally Posted by hotspur
I am thinking of using my 17-55 lens on scope tracking,lens at 17 mm,not sure what the best settings would be.Any thoughts?
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Chris, at 17mm they will be dots. At 16mm (that's equivalent to 24mm on an APS-C camera) I find the Moon is just a large a dot.
If you were intending to track the stars and get trails of the ISS/STS it would probably work, but I'd go for a bit more focal length and close to maximum aperture. At 18:10 there might still be a bit of light in the sky, so long exposures aren't likely to do too well.
I saw Mike's reply and we seem to be pretty much in agreement.
Andrew