Temps superbe hier soir au LAC.
La comète LINEAR du moment était spectaculaire (voir image: Albert, Bertha, 6x 10s à 3200 ISO, champ 33′).
J’ai réussi à photographier la conjonction entre deux comètes faibles, avec en prime deux satellites dans le champ. Détails ci-dessous.
jld

Subject: Comet Conjunction

Weather was excellent at LAC yesterday.
Comet LINEAR was spectacular (image below) but my priority was to record the conjunction between C/2005 L3 (far away thus slow, but brighter than 14 mag) and P/2007 N2 (faster but fainter, about 16 mag) using ‘Albert’ and ‘Bertha’.
Results: the image taken at 22:05 shows the crossing of a bright artificial satellite with a very faint one, and both comets – although N2 is at the detection limit. Technical data: 30s at ISO 3200, FOV 29′. Another image, taken 6 minutes later, shows the motion of the comets.
jld