Thursday, 13 January 2011

Correction corrected

This is becoming tedious.
Just the facts for the final explanation of the image.
Focal length 11mm. Exposure 60 seconds.

Conclusion: star trails caused by camera slipping 2 to 3 degrees.

The correction in the previous post is itself wrong. No deep zoom just a light zoom. So the over long trails must be a result of the camera/tripod slipping slowly during the exposure creating star trails approximately 10 times longer than they should be. The only other theoretically possible way to get longer trails would be if the exposure was commensurately longer. It wasn't.

So that is it. I may start proper blogging at some point. Would be advisable to not hold your breath in anticipation though. The events chronicled in these three brief posts should give any reader passing by a clue to my competence.