suggest manual lens for milky way

Started Jun 21, 2013 | Discussions thread
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Astrophotographer 10
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Re: Another pic. What could I have done to get sharper round stars?
In reply to teaberry, Jun 26, 2013

Very nice. ISO 1600 or 3200 would have gotten a much brighter image and consequently allowed a shorter exposure time. ISO200 is too low and ISO400 also too low for this type of work. Its all in the ISO3200 - 6400 x 30 seconds at 14-21mm focal length type shot untracked on a tripod with long exposure noise reduction on or ISO1600-3200 on a tracked mount.

GEM= german equatorial mount - a type of telescope mount that has 2 axes that rotate to match earth's rotation and can point anywhere in the sky.


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