The Liverpool Astronomical Society Forum

Observing & Imaging => Cometary => Topic started by: brendan martin on 25-Oct-2007 12:38:58 BST



Title: Comet 17p/holmes
Post by: brendan martin on 25-Oct-2007 12:38:58 BST
Comet 17p/holmes which is normally a low magnitude comet has suddenly flared to 3rd magnitude is visible to the naked eye at the moment. It can be seen in Perseus below Cassiopeia here is a link to a sky maphttp://spaceweather.com/images2007/24oct07/skymap_north_holmes.gif?PHPSESSID=fmdm99obfg86u5f8kfm5u42oa1 (http://spaceweather.com/images2007/24oct07/skymap_north_holmes.gif?PHPSESSID=fmdm99obfg86u5f8kfm5u42oa1)
lets hope for clear skys


Title: Re: Comet 17p/holmes
Post by: Al on 29-Oct-2007 13:28:22 GMT
Looked for the comet last night and saw a bright yellow star in perseus. Through binoculars it looked like a globular cluster does in a telescope. Is this the comet? I checked a star chart to make sure there are no globulars in perseus and there didnt appear to be any. Does anybody know why the comet has flared so violently?


Title: Re: Comet 17p/holmes
Post by: brendan martin on 29-Oct-2007 19:59:41 GMT
Hi Al, there are a few clusters in perseus (ngc869 the double cluster), the comet looks more like a planetary nebulae, the comet makes up a triangle with Mirfak and delta persei, http://www.spaceweather.com/images2007/24oct07/skymap_north_holmes.gif?PHPSESSID=ms3enrcvrprhaidjmjnn6ll2g3 (http://www.spaceweather.com/images2007/24oct07/skymap_north_holmes.gif?PHPSESSID=ms3enrcvrprhaidjmjnn6ll2g3)
Nobody knows for certain why it flared, but this is the second time it has done this.