Re: [hugin-ptx] star trails

2011-03-15 Thread paul womack

Tom Sparks wrote:

I am looking at set up a time laspe camera
Can I use Hugin to do star trail photos[1]?


Star trails are caused by long exposures
revealing the motion of the earth.

The long exposure can either be genuine or virtual,
by stacking multiple short exposures.

Doing a panoramic star trail sounds very difficult,
since when the camera is pointing at one part of the sky,
it's not (duh!) pointing at another part.

Thus each locations exposure must be discontinuous.

It may be possible to arrange matters
so that each angle gets a reasonable exposure
at sufficiently close intervals to allow complete blurring
(say 5 second exposure every minute, allowing for a 12 shot
panorama, using a robot head).

Sounds very tricky though.

  BugBear

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[hugin-ptx] star trails

2011-03-14 Thread Tom Sparks
I am looking at set up a time laspe camera
Can I use Hugin to do star trail photos[1]?

[1] http://apod.nasa.gov/apod/ap980912.html

tom_a_sparks
It's a nerdy thing I like to do


  

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