Thanks again for the comments guys.
Quote:
Originally Posted by cpc6128
Was wondering did you mount this camera on some tracking machine? I mount mine a tripod and getting some star trails at 6 minutes at iso800...
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Yep, for these shots the 400D rode on top of my 12.5" reflector, so you will need a tracking platform, however I have been suprised by the amount of stars that can be captured at ISO1600 in just 45 seconds. Perhaps you can try 5 to 10 stacks of 45 second shots and stack these in Registax or deep sky stacker?