Observation's detail view

КометаC/2014 Q1 (PANSTARRS)
ПользовательAHale
Имя пользователя
Время наблюдения (UT)2015-06-15 10:19:00
Инструмент20-cm reflector
Место наблюденияCloudcroft
Звездный каталогNH - Северный полярный ряд (Henden и Kaitchuck, 1982)
МетодM - Метод Морриса
Блеск8.0
Диаметр комы(')2
Длина хвостаНе задан
Степень конденсации комы6.5
Positional angle of tailНе задан
Шкала БортляНе задан
Апертура20.32
Focal length (mm)1118
Оптическая схема инструментаL - Рефлектор системы Ньютона
Увеличение43
Поле зрения (°)0
SQM-L в зените
Зона засветкиСерая
LmНе задан
КомментарийAnother hour-long drive (and back) this morning; the sky conditions were perhaps a bit better than they were yesterday, at least, the air was drier. The comet was located in a blank star field but I had no trouble locating it or seeing it; I was able to follow it for about 15 minutes before the sky became too bright. Distinctly non-stellar, but still quite condensed. The coma measurement is somewhat of an upper limit. When I examined the comet at 152x the coma appeared slightly fan-shaped, with the apex in the sunward direction; no sign of a tail, but in the bright sky that's not surprising. Since perihelion passage is now only three weeks away I won't hold my breath for any major display, unless it undergoes some kind of dramatic brightness surge as it passes through perihelion.
Morris Format2015 Jun 15.43 UT: m1=8.0, Dia.=2', DC=6.5 ...20.32-cm L (43x) ...Alan Hale (Cloudcroft, U.S.A.)