Ring Nebula

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Ring Nebula

Postby Aratus » Sun Sep 23, 2018 9:20 pm

Another planetary nebula, but a lot smaller looking than the Dumbbell. The 'Ring Nebula' (M57) is located in Lyra.
Through a telescope it is a little grey ring, but even the humblest camera will bring out some colour.
Image
This is just a single 30sec exposure with the Canon.
That star in the middle of the ring is the origin of the nebula.
I use an 11" Celestron SCT (CPC 1100) on an equatorial wedge, housed in a 2.2m Pulsar observatory. I use a ZWO ASI1600MC and Canon 500D for imaging.
Aratus
 
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Re: Ring Nebula

Postby Graeme1858 » Mon Sep 24, 2018 3:24 am

That's quite encouraging to a newbie aspiring astrophotographer like me if it's possible to get something with that much colour with just one thirty second shot!

It's believed that the ring nebular and the dumbbell nebular are similar in shape and we see the dumbbell from the side and the ring nebular looking straight down the barrel!

Regards

Graeme
_______________________________________
Miranda 10x50 Binoculars
Celestron CGX 9.25 SCT
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Re: Ring Nebula

Postby Aratus » Mon Sep 24, 2018 2:45 pm

Yes, many planetaries tend to be 'hour glass' shaped, and the 'Ring' is sort of looking down on that shape. (or up!)

Modern DSLRs are very sensitive, and putting the ISO on the largest setting will show the 'ring' colours. Good contrast from a fairly dark sky will help, otherwise a light pollution filter is required knocking down the nebula light. Simply 'adding' the light from several exposures helps. Trying to get the 'green', 'yellow' & 'red' colours is a challenge with a DSLR, but it can be done.

It never fails to amaze me that the amateur today can obtain images better than the largest telescopes could 60 years ago.
I use an 11" Celestron SCT (CPC 1100) on an equatorial wedge, housed in a 2.2m Pulsar observatory. I use a ZWO ASI1600MC and Canon 500D for imaging.
Aratus
 
Posts: 823
Joined: Tue Jan 12, 2016 2:17 pm
Location: East Lincolnshire


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