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M 39



Open cluster


About this Object
Discovered by Charles Messier in 1764. M39 is a very large but very loose open cluster situated
some 9 degrees east and a bit north of Deneb (Alpha Cygni).
Its distance is only about 800 light years, and it is of intermediate age (estimates between 230 and 300 million years).
30 stars are proven members and contained in a volume of about 7 light years diameter.
More informations are available in seds.org website


Technical Data
Optics

130 mm f/6.4 Astro-Physics EDF Refractor
Mount

Astro-Physics AP 1200QMD + Astro-electronic FS2 goto

Camera SBIG ST-10XE.
Filters SBIG CFW8A.With Astrodon LRGB Ha filters
Focuser Robofocus focuser and Focusmax software
Dates 11 August 2005.
Location Lentin Observatory
Exposure RGB = 15:15:15minutes. bin1. 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