Observation by Nick Hewitt: Another cosmic hexagon

Uploaded by

Nick Hewitt

Observer

Nick Hewitt

Observed

2018 Sep 17 - 20:39

Uploaded

2018 Sep 18 - 09:51

Objects

NGC7139

Equipment

TMB 115mm f7 triplet
EQ8
Trius 814
Hydrogen alpha
Cropped image

Exposure

3 x 600s

Location

Northampton

Target name

NGC 7139 in Cepheus

Title

Another cosmic hexagon

About this image

This rather faint planetary nebula (magnitude 13v) shows that Saturn is not the only heavenly body to show hexagonal symmetry. It is annular and the ring structure (~ 78") shows better in H-alpha. I suspect it is a tough target for visual observers with smaller telescopes, but a fun challenge for those blessed with 10" plus!

Files associated with this observation

NGC 7139 2018-09-17 3 x600s Ha 2x2 TMB cropped and pp.jpg (144.6 kB)

Like this image

Mr Leonard Entwisle, Callum Potter, Jeremy Shears, David Basey, Mr Michael Alan Frost, Ray Emery, Martin Lewis, Graham Winstanley, Peter Carson, Gary Poyner, Andy Wilson, Chris Hooker, Ian Rothwell

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