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NGC6881 spectrum

Image

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About this observation
Observer
Mike Harlow
Time of observation
20/08/2019 - 22:00
Object
Planetary nebula NGC6881 in Cygnus
Observing location
Ipswich, UK
Equipment
12 inch F/3.6 astrograph
Starlight Xpress H16 CCD
Astrodon luminance filter
3 degree objective prism
Exposure
6 x 30 seconds
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An image to illustrate the power of objective prism spectroscopy.

NGC6881 is a very small planetary nebula in Cygnus.  At just 4 arc seconds across it is difficult to spot amongst all the stars of the milky way in Cygnus.  But take a spectrum of the field and it pops out!

Comments

BillW's picture

"The power of spectroscopy!"

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