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BAA Images Nick James

Observation by Nick James: M57

Uploaded by

Nick James

Observer

Nick James

Observed

2021 Jul 22 - 23:19

Uploaded

2021 Jul 24 - 07:22

Objects

The Ring Nebula (M57)

Planetarium overlay









Constellation

Lyra

Field centre

RA: 18h53m
Dec: +33°01'
Position angle: +1°35'

Field size

0°09' × 0°09'

Equipment
  • ASI6200MM + Celestron HD11
Exposure

8x60s

Location

Chelmsford, UK

Target name

M57

Title

M57

About this image

The transparency on this night was very poor but, as is often the way, the seeing was good. I was getting a star FWHM of 1.9" so I decided to do a quick image of this familiar object. The stars aren't perfectly round due to tracking errors but I have applied a weak unsharp mask to bring out some detail in the nebula. It is quite a small object, only around 1 arcmin across at the narrowest point, so something similar to the apparent size of Jupiter. Many of the recent high res images online are taken using planetary camera techniques (lots of very short exposures) and I might try that with this camera using a small ROI sometime. 

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