M33 (Pinwheel Galaxy)
RA: 01h 33m 52s
Dec: +30 degrees 39' 29"
PA: plus 285 degrees
M33 is a beautiful, large, and yet
relatively faint spiral galaxy member of our local group.
Although its magnitude is 7.0, it has low surface brightness due to its
large extent (over 1 degree). The most conspicuous characteristic
of M33 is the large number of HII star forming regions it contains,
seen as red regions of Ha emission within the spiral arms. One of
these HII regions, known as NGC 604,
seen at about 7 o'clock in the above image and extends for over 1,500
light years. More information about M33 may be found in Rob Gendler's
Date: October 9 and 10, 2010
Scope: Vixen VC200L at f6.4 on the
Autoguider: SBIG ST-402
Camera: ST8300 -20C
Filters: Baader L, R,
G, B filters
Exposures: Lum = 390' ;
R = 180'; G = 90'; B = 120'.
Total exposure 13
Calibrated in Maxim, aligned and
stacked using DeepSkyStacker, followed
in ImagesPlus (IP). Further processing in Photoshop CS5.
note: Graphics on this website may not be reproduced without
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