Messier 33 (M33, Pinwheel Galaxy)
Characteristics:
RA: 01h 33m 52s
Dec: +30 degrees 39' 29"
PA: plus 81 degrees
Description:
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,
is
seen at about 1 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
website.
Photographic
Details:
Dates: October 20, 2017
Scope: Takahashi
FSQ106 at f5 on the Takahashi NJP
Mount
Autoguider: SBIG ST-402 with
60mm guidescope, focal length 227mm
Camera: Starlight XPress SX814
CCD camera at -20C, resulting in an image scale of 1.44 arcsec/pixel
with the FSQ106
Filters: Baader LRGB
Exposures: Total
exposure 8 hours
Post-processing:
Calibrated, aligned and
stacked in Maxim, followed
by DDP
in ImagesPlus (IP). Further
processing in Photoshop CS (16
bit format)
Please
note: Graphics on this website
may not be reproduced without author permission.
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