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On photographs, however, the
Pinwheel Galaxy M101 is revealed as one of the most prominent Grand
Design spirals in the sky. More informations are available in
seds.org website 130 mm f/6.4
Astro-Physics EDF
Refractor
Astro-Physics AP
1200QMD + Astro-electronic
FS2 goto
Face-on spiral Galaxy>
About this Object
This type Sc spiral
galaxy in Ursa major was discovered by Pierre Méchain on March 27,
1781.
M 101 lies at a distance of approximately 24 million light years
with a magnitude listed 7.9. Although extended 22 arc minutes on
photos and quite bright, only the central region of this galaxy
is visible in smaller telescopes.
Technical Data
Optics
Mount
Camera
SBIG
ST-7XME.
Filters
SBIG
CFW8A.With LRGB filters
Focuser
Robofocus focuser and
Focusmax
software
Dates
05 March 2005.
Location
Lentin
Observatory
Exposure
LRGB = 192:100:100:210
minutes.L bin1,RGB bin2. Scale 1.69^s/pixel
Acquisition
MaxIm DL 4,
TheSky 6,
Processing
MaxIm DL 4,
Photoshop CS,
Registar,
Neat Image.
All content are copyright
Antoine Vergara