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Object
............................................ M 29 - " NGC 6913 "
Constellation .............................. Cygnus
Distance + Ap. Magnitude....... 4000 - 7000 Light Years
- 7.1
RA / DEC
.....................................
20h:23m.56sec /
+38°
31m.4sec
Date + Time ............................... 7&8 / 7 /2012 -
19:00 UTC
Location .................................... "Nunki
Observatory" - Skiathos
Optics .........................................
Celestron
ED 80
Tools .......................................... Maxim
DL
Camera ..................................... SBIG
ST-2000XM with CFW10 (Astrodon filters)
Exposure Time.......................
Luminance: 9 X 300sec RGB: 3 X 300sec (each)
More Details ...........................
Environment Temperature : 27oC Camera Temperature -10οC
Mount ....................................... Paramount
ME
Guiding .................................... Officina Stellare
RC 400 ( 16'') - SBIG ST10XE with AO8
Processing Details ................ Photoshop ,
Maxim , CCDsoft
Notes ........................................ Weather:
8/10 - Transparence: 2/6 - Humidity : 75 %
Target details ......................... Messier
29 (also known as M 29 or NGC
6913) is an
open cluster in the
Cygnus constellation. It was discovered by
Charles Messier in
1764,
and can be seen from
Earth
by using
binoculars.
M29 is a rather
coarse and less impressive cluster, situated in the highly crowded
area of Milky Way near
Gamma Cygni, at a distance of 7,200 (most sources including
Mallas/Kreimer and Burnham, and agreeing with early estimates or
R.J. Trumpler 1930) or 4,000 light years (the latter from Kenneth
Glyn Jones and the Sky Catalogue 2000.0). The Night Sky Observer's
Guide by Kepple and Sanner gives a deviating value of 6,000 light
years - the uncertainty due to inaccurately known absorption of the
cluster's light.
This cluster can be seen in
binoculars. In telescopes, lowest powers are best. The brightest
stars of M29 form a "stubby dipper", as Mallas says it. The four
brightest stars form a quadrilateral, and another three, a triangle
north of them. A few fainter stars are around them, but the cluster
appears quite isolated, especially in smaller telescopes. In
photographs, a large number of very faint Milky Way background stars
shows up.
M29 can be found quite easily as it is about 1.7 degrees South and
little East of Gamma or 37 Cygni (Sadr). In the vicinity of M29,
there is some diffuse nebulosity which can be detected in
photographs. |
