IC 1805 and Comet Jacques
Magnitude: Not determined
Size: FOV of full frame image (uncropped) = 3.9 x 3.9 degrees
RA: 2h 32m 41s (J2000)
Dec: 61 degrees 27' 25" (J2000)
PA: +191 degrees
IC 1805 is a young star
cluster surrounded by Ha emitting nebulosity, located in the
Cassiopeia. The above image shows IC 1805 accompanied by Comet
Jacques, which moved through this region on 8/19 and 8/20,
deal of interesting detail within IC 1805 that can
be best appreciated in Ha light, as shown here in
an image that I captured several years ago.
More information about this region can
be found at Rob
Dates: August 17, 18, 19, 2014
FSQ106 at f5 on the Takahashi NJP
Autoguider: SBIG ST-402 with
60mm guidescope, focal length 227mm
Camera: Apogee U16M at -20C, with
7 position 50mm square filter wheel (Apogee FW50-7S)
and LRGB filters, 50mm square
Exposures: IC 1805: Ha, 4 hours; RGB, total of 4 hours; Comet
Jacques, LRGB total of 1.5 hours.
Calibrated, aligned, and stacked in Maxim, followed
in ImagesPlus (IP). Further processing in Photoshop CS (16
bit format). I also used the nice tutorial
by Bernard Hubl for tips regarding acquiring and processing the comet.
note: Graphics on this website
may not be reproduced without author permission.
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