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Thursday, March 28 2024 @ 07:17 pm EDT
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Forum Index > Observing > Solar System | |||
Comet C/2007 Q3 & M88 |
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tricks46 |
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Sage Status: offline Registered: 06/20/03 Posts: 185 |
Hello. This comet discovered in 2007 has now become a morning object. One of the brightest comets in the sky, it is at 10th magnitude. Thought some might enjoy this. |
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lrjarhead |
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Elder Status: offline Registered: 08/25/08 Posts: 83 |
Mike, |
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LME |
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Sage Status: offline Registered: 03/06/08 Posts: 140 |
Nice catch Mike! I see at least a dozen DSO's mingling around in there... Clear Skies-Larry |
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tricks46 |
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Sage Status: offline Registered: 06/20/03 Posts: 185 |
Quote by: LME Nice catch Mike! I see at least a dozen DSO's mingling around in there... There are different ways of working this out. First you must figure out the distance the comet moves in a certain time. Slower (distant) comets will allow longer exposures. This image has 10x100 second exposures with the lum filter and 2x45 seconds each through the RGB filters. Two stacking processes are then done. One on the comet false nuk. and then a stack on the stars. As the comet is not moving much and the fact the comet is moving in a friendly RA/DC movement the streaking of the comet is easly taken care of in programs like CcdSoft, PS and Neat Image. Other comets moving faster or in different directions require different exposures and image processing. Sounds pretty involved because it really is. There are also other stacking processes you can use which you take images of the area of sky where the comet will be for background and then add the comet exposures when the object arives later. Just takes comets and practice. Mike |
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