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Old 17-10-2018, 10:57 AM
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kosborn (Kevin)
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Stellarium vs theskylive.com for comet position

I'm hoping to catch an image of 21P/Giacobini-Zinner before it fades too much more (assuming the skies clear at some stage). Stellarium reports the current position at 7h09min27.26s and -17d32m3.5s (J2000) but theskylive.com says 7h16m8s and -17d24m10s. Unfortunately with my OTA and camera these positions are not in the same FOV.


Does anyone know which one is accurate?


Thanks, Kevin
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Old 17-10-2018, 01:09 PM
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pfitzgerald (Paul)
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Hi Kevin

I'm definitely no expert but will this help?

https://www.calsky.com/?Comets=&sec=3&step=1&number=21P

Paul
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Old 17-10-2018, 01:24 PM
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kosborn (Kevin)
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Quote:
Originally Posted by pfitzgerald View Post
Hi Kevin

I'm definitely no expert but will this help?

https://www.calsky.com/?Comets=&sec=3&step=1&number=21P

Paul

Thanks Paul,


That does help. Different to both of the others but the Calsky data gives me a bit more confidence. Will aim there and keep my fingers crossed... Hopefully it will be bright enough to see on individual subs in case I need to aim elsewhere.


Kevin
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Old 17-10-2018, 02:21 PM
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pfitzgerald (Paul)
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Cheers - clear skies - and good luck!
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