17P/Holmes觀測資料

cklau

唔知點解，IAU發佈17P彗星的資料，光度部份仍然未見更新

http://www.cfa.harvard.edu/iau/Ephemerides/Comets/0017P.html

現在彗星的亮度約4.2~4.5等

PTS

We observed the comet for a few minutes before the occultation event on Dec 17.
From the video image (stellacam3 attached to the 0.5 m RC focus) the nyckeus of the comet is about 15-16 magnitude.

PTS

cklau

PTS

但個星曆表依然話12月16日，m1(總光等)=17.6 & m2(核亮度)=20.2，唔知點解

[ 本帖最後由 cklau 於 2007-12-22 02:43 編輯 ]