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Contains:  NGC 6781
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NGC 6781, The Ghost of the Moon, 


            Ruben Barbosa
NGC 6781, The Ghost of the Moon

NGC 6781, The Ghost of the Moon

Technical card

Imaging telescope or lens:The Liverpool Telescope

Imaging camera:IO:O

Software:Maxim DL, Gimp

Resolution: 1981x1986

Blue: 1x60"
Green: 1x60"
Ha: 4x120"
Red: 1x60"

Integration: 0.2 hours job: 3137707

RA center: 19h 18' 27"

DEC center: +6° 32' 27"

Pixel scale: 0.304 arcsec/pixel

Orientation: 270.007 degrees

Field radius: 0.118

Data source: Professional, scientific grade data


* Image acquisition: Liverpool Telescope
* Processing: Ruben barbosa

NGC 6781 is a planetary nebula located in the constellation Aquila.

This ring-like nebula consists of glowing gas cast off by a dying star some 3,100 light years away.

The nebula has about 2 light years and a faint magnitude 11,4.

With a 12″ telescope, the nebula looks like a ghost image of the Moon. It presents a beautiful spherical shell which brightens towards the edge and a ring around the circumference. The central star, a mid-sized star like our Sun, is throwing off the outer layers of its atmosphere in a last gasp of life.

The nebula will dissipate over the next many thousands of years, and the central star will remain as a white dwarf, a hot glowing cinder which will cool slowly over billions of years.



Ruben Barbosa
License: None (All rights reserved)

Sky plot

Sky plot


NGC 6781, The Ghost of the Moon, 


            Ruben Barbosa