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#31
October 26th 04, 01:16 AM
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On Tue, 19 Oct 2004 20:19:07 -0400, Michael A. Covington wrote:
How about an untra low noise 1 pixel camera... That is called a photomultiplier tube, and we measure star brightnesses with them. Really. I've heard of them. How do you ensure light from only one star is hitting it? 
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#32
October 26th 04, 07:34 AM
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You hold them real close to the star.
-- http://www.chapelhillnoir.com home of The Camera-ist's Manifesto The Improved Links Pages are at http://www.chapelhillnoir.com/links/mlinks00.html A sample chapter from "Haight-Ashbury" is at http://www.chapelhillnoir.com/writ/hait/hatitl.html "Peter Chant" wrote in message news  On Tue, 19 Oct 2004 20:19:07 -0400, Michael A. Covington wrote: How about an untra low noise 1 pixel camera... That is called a photomultiplier tube, and we measure star brightnesses with them. Really. I've heard of them. How do you ensure light from only one star is hitting it?
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#33
October 26th 04, 03:30 PM
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"Peter Chant" wrote in message
news On Tue, 19 Oct 2004 20:19:07 -0400, Michael A. Covington wrote: How about an untra low noise 1 pixel camera... That is called a photomultiplier tube, and we measure star brightnesses with them. Really. I've heard of them. How do you ensure light from only one star is hitting it? There's a small mask just ahead of it, at the telescope's focus.
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#34
October 26th 04, 03:30 PM
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"Peter Chant" wrote in message
news On Tue, 19 Oct 2004 20:19:07 -0400, Michael A. Covington wrote: How about an untra low noise 1 pixel camera... That is called a photomultiplier tube, and we measure star brightnesses with them. Really. I've heard of them. How do you ensure light from only one star is hitting it? There's a small mask just ahead of it, at the telescope's focus.
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