Observation by Grant Privett: Medusa Nebula

Uploaded by

Grant Privett

Observer

Grant Privett

Observed

2022 Feb 06 - 22:30

Uploaded

2022 Feb 09 - 22:27

Objects

Abell 21

Equipment

300mm f/4 Newtonian

Exposure

210x 20s

Location

Near Salisbury

Target name

Medusa Nebula

Title

Medusa Nebula

About this image

Yes, I know the collimation is awful and the flat fielding is wrong somehow (not sure why), but as the coma corrector-CCD distance is 10mm wrong those are the least of my worries and I will not panic about them unduly. Will sort out the collimation and start doing long exposures again when the RCC turns up.

Either way, I was expecting Abell 21 to be slightly tougher, but it is a rather nice target anyway. Even single images were showing some detail. I must try some of the others again. I remember a few being really pretty.

At least I tracked down the dome earthing problem.

Files associated with this observation

medusa-70min.jpg (678.5 kB)

Like this image

Alan Thomas, Nick Hewitt, David Basey, Mike Harlow, Callum Potter, Manolo_Rodriguez, Simon Paul Davis, Nick James, Eric Watkins

Comments

Mike Harlow, 2022 Feb 10 - 15:25 UTC

Looks good to me Grant. And at least 3 asteroids as well...

(However...South up!!!)

Mike.

Grant Privett, 2022 Feb 10 - 17:53 UTC

Well done in spotting 3 asteroids!

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