Comet Chury 67P)
Posted: Sat Oct 09, 2021 5:00 pm
A very famous comet, Churyumov-Gerasimenki (67P), the Rosetta's comet, well placed on the northern sky. 2D views (Cote d'Azur sky pollution not removed) :


The profile (UV CN emission and O 6300 A are visible, but it is a typical durst spectrum - the object is far from the sun):

The setup (Star'Ex spectrograph equipped by a 300 lines/mm gratin, 19 microns sli, on a Newton 10-inch f/4):

See: http://www.astrosurf.com/solex/sol-ex-stars-en.html
Christian Buil


The profile (UV CN emission and O 6300 A are visible, but it is a typical durst spectrum - the object is far from the sun):

The setup (Star'Ex spectrograph equipped by a 300 lines/mm gratin, 19 microns sli, on a Newton 10-inch f/4):

See: http://www.astrosurf.com/solex/sol-ex-stars-en.html
Christian Buil