http://www.raben.com/weblog/2006/08/22/asteroids-6-hebe-and-15-eunomia/ Occasional observations about astronomy, astrophotography, and software Mon, 01 Dec 2008 22:04:06 +0000 http://wordpress.org/?v=2.3.2 http://www.raben.com/weblog/2006/08/22/asteroids-6-hebe-and-15-eunomia/#comment-1454 Vern Fri, 25 Aug 2006 19:28:57 +0000 http://www.raben.com/weblog/2006/08/22/asteroids-6-hebe-and-15-eunomia/#comment-1454 The Stellacam2 was set to integrate 128 1/30 second exposures, so about 4 seconds -- way more exposure than necessary. I kept them at 4 seconds to match up with the darks I took that evening. Logic of doing that was probably wrong -- the asteroid was bright enough that no dark subtraction was probably necessary. An integration of 16 1/30 sec frames or about 1/2 second would have been a better exposure. I didn\'t notice any visible movement of the asteroid while taking the images. The field matched up with the star chart, so it was obvious what was the asteroid. The Stellacam2 was set to integrate 128 1/30 second exposures, so about 4 seconds — way more exposure than necessary. I kept them at 4 seconds to match up with the darks I took that evening. Logic of doing that was probably wrong — the asteroid was bright enough that no dark subtraction was probably necessary. An integration of 16 1/30 sec frames or about 1/2 second would have been a better exposure. I didn\’t notice any visible movement of the asteroid while taking the images. The field matched up with the star chart, so it was obvious what was the asteroid.

]]> http://www.raben.com/weblog/2006/08/22/asteroids-6-hebe-and-15-eunomia/#comment-1452 Andrew Fri, 25 Aug 2006 08:43:44 +0000 http://www.raben.com/weblog/2006/08/22/asteroids-6-hebe-and-15-eunomia/#comment-1452 Hi Vern, Just curious,what was your exposures?.I was wondering if you could detect any movement. Andrew Hi Vern,
Just curious,what was your exposures?.I was wondering if you could detect any movement.
Andrew

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