Saturday, March 12, 2011

YouTube occultation

I found a very nice asteroid occultation video on YouTube by apolloisgo. 225 Henrietta to be precise.

It was recorded on 16 July 2007. The asteroid passed in front of a 10th magnitude star over North America. Watch the stars in the middle-right of the image. You can hear the shortwave international CHU time signal in the background.

The equipment used was a Celestron NexStar 8 GPS with Fastar and an Astrovid StellaCam EX.

The contrast is excellent. No problem seeing the field stars in real time nor the target star disappearance. This is encouraging. I don't know why I'm not getting these kind of results...


The Fastar system replaces the SCT secondary mirror with a CCD camera. This allows the system to see a very wide field of view at a very fast optical speed of f/1.95.

So, not an apples-to-apples comparison...

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