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Old November 21st 17, 09:47 AM posted to sci.astro.amateur
Martin Brown[_3_]
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Default Messier 76 - "Spirit of 76" - Red - White - and Blue

On 18/11/2017 17:33, Razzmatazz wrote:
On Saturday, November 18, 2017 at 11:27:59 AM UTC-6, Razzmatazz
wrote:
Just before winter sets in the outer arms of the Milky Way pass
overhead. Embedded in them are regions of star formation and star
death. M76 is a Planetary Nebula where the central star has shed
its outer atmosphere shedding its hydrogen (the bright red areas)
and oxygen (blue areas) into a shell, which is expanding into the
surrounding space.

https://www.astromart.com/common/ima...7.jpg&caption=



Forgot to add that this image was captured thru my 432mm F8
Astrograph using clear, red, green, blue, H-a and OIII filters over a
period of 3 nights.


It will look a lot closer to natural colours if you render OIII as cyan.

At mag 10.1, this planetary nebula is just visible in 100mm
binoculars as a fuzzy patch in Perseus overhead at 10pm local time.

Razzy



--
Regards,
Martin Brown