NGC 6520 and Barnard 86 in Sagittarius

Image Info

Imaged 20110603 with 31.5cm f/5 Newtonian Reflector and GSTAR-EX video camera
4 sector mosaic (2w x 2h)
200 video frames each sector no filter (luminance channel)

Colour info is lo-res, wide field print taken in 1989 on Hypered Kodak Ektar 1000 film.
See here for blending colour channel method

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Object Info

NGC 6520 - Open cluster

Barnard 86 - Dark Nebula

Orange star - HD164562 magnitude 6.7

The background star field is very dense here, because we are looking only a few degrees from the centre of the Milky Way.

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