Observation by David Davies: Messier 15 - into the core

Uploaded by

David Davies

Observer

David Davies

Observed

2020 Jul 28 - 23:36

Uploaded

2020 Aug 26 - 08:52

Objects

M15

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Constellation

Pegasus

Field centre

RA: 21^h30^m
Dec: +12°09'
Position angle: +0°09'

Field size

0°40' × 0°30'

Equipment

8"-Ritchey Chretien telescope
X 0.7 reducer
QSI 683 camera with Astrodon filters
Skywatcher EQ8 mount

Exposure

10 x 2-min RGB

Location

Cambridge, UK

Target name

Messier 15

Title

Messier 15 - into the core

About this image

This is a revisit of M15, this time with my RC scope. Previously I imaged it with an SW 120ED Equinox refractor and comparing the images has been interesting. The 120 ED suffered from bloated stars at the red end of the spectrum so each bright star had a red ring around it. The RC, on the other hand, is producing excellent star images with good colour.

My aim with this image was to explore the core of the cluster and maybe to identify the planetary nebula, Pease 1. Therefore, I deliberately underexposed the subs and then produced three images, each having a different stretch. I combined these images in PS producing a rather flat contrast in the core but enabling stars to be identified almost to the centre.

Files associated with this observation

M15_web.jpg (809.8 kB)

Like this image

David Basey, Callum Potter, Dr Paul Leyland, Jeremy Shears, Peter Carson

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