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130 mm f/6.4
Astro-Physics EDF
Refractor with TCC 0.75
Astro-Physics AP
1200QMD + Astro-electronic
FS2 goto
The Great Andromeda Galaxy
About this Object
M31 is the famous Andromeda galaxy, our nearest large neighbor galaxy, forming the Local Group of galaxies together with its companions (including M32 and M110, two bright dwarf elliptical galaxies), our Milky Way and its companions, M33, and others.
It was longly believed that the "Great Andromeda Nebula" was one of the nearest nebulae. William Herschel believed, wrongly of course, that its distance would "not exceed 2000 times the distance of Sirius" (17,000 light years); nevertheless, he viewed it at the nearest "island universe" like our Milky Way
which he assumed to be a disk of 850 times the distance of Sirius in diameter, and of a thickness of 155 times that distance.
More informations are available at the seds.org website
Technical Data
Optics
Mount
Camera
SBIG
ST-10XE.
Filters
SBIG CFW8A.With
Astrodon LRGB Ha filters
Focuser
Robofocus focuser and
Focusmax
software
Dates
7,8&9 October 2005.
Location
Lentin
Observatory
Exposure
Mosaic of 3 frames. each frame is a LRGB of 60:50:50:50minutes.L=180" bin1,RGB=450" bin2. scale 2.09^s/pixel.
total exposure time 630mn
Acquisition
MaxIm DL 4,
TheSky 6,
Processing
MaxIm DL 4,
Photoshop CS,
Registar,
Neat Image.
All content are copyright
Antoine Vergara