Object data
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Exposure data
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“Alkor” Lacerta N25010c Newtonian, f/D = 4 SX Trius 694, Baader LRGB filter
10micron GM2000 HPS II
L 19x1min / RGB 19x1min per filter
01 h 16 min
data acquired remotely using CCD Commander
Comet 21P/Giacobini-Zinner
Comet
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Auriga
2018-09-08, 02:09 - 03:49 UT
58.77 Mio km from Earth
first comet explored by a space probe in 1985