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Messier M11

B111, B112 & B318 are Dark Nebulas

Object Information
Messier object: M11
Common name for Messier object: Wild Duck Cluster
NGC (New General Catalog) number: NGC 6705
Discription: Open Cluster
Located in constellation: Scutum
Right ascension in hours minutes: 18:51.1
Declination in degrees minutes: -6:16
Visual magnitude: 6.3
Size: 14 arc minutes
Image size: 55.23 arc minutes high by 40.98 arc minutes wide
Image orientation: North is top, East is left
Detailed discription of M11 in SEDS Messier database
Other Messier galleries, images or catalogs

Observing Log
Date September 13, 1998
Time at end of first CCD image 22:22 PDT
Time at end of last CCD image 22:34 PDT
Observing Location: At home on the drive way
Observation of object: M11 is an irregularly round open cluster with lots of stars and it has a bright center. M11 is located in the Milky Way with three dark nebules. B111 is north of it and B318 and B112 are south of it.
 
Sky Conditions
Sky transparency: 5.0 (Magnitude of the faintest star visible with the unaided eye in Ursa Minor)
Moon rise at 00:45 PDT on September 14, 1998
Astronomical twilight ends in the evening at 21:06 PDT on September 13, 1998
Astronomical twilight starts in morning at 5:03 PDT on September 14, 1998
 
Observing Equipment
80 mm aperture refractor telescope and CCD Cookbook Camera
CCD image time: 4 - 240 seconds images added together
CCD dark calibration frames: 20 - 240 seconds dark frames
Notes: Used too cold of cooling water for the CB245 camera and the CB245 camera dewed up with water all over it. There may be some water on the camera window on some of the images taken night of September 13-14, 1998.

© 1998-2003 David Haworth