Observation by Mike Scarisbrick: NGC 4631, NGC 4656

Uploaded by

Mike Scarisbrick

Observer

Mike Scarisbrick

Observed

2020 Mar 02 - 23:45

Uploaded

2020 Mar 05 - 15:17

Objects

The Crowbar Galaxy (NGC4656)

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Constellation

Canes Venatici

Field centre

RA: 12^h42^m
Dec: +32°22'
Position angle: +2°14'

Field size

0°51' × 0°49'

Equipment

SkyWatcher 200P with coma corrector
AZ-EQ6 GT mount
Sony A6300 camera
AstroArt6 software

Exposure

204 images, 30 seconds each at ISO 4000

Location

Cambridgeshire, UK

Target name

NGC 4631, NGC 4656

Title

NGC 4631, NGC 4656

About this image

The Whale galaxy, and the Crowbar galaxy. The galaxies are interacting, the Whale (NGC 4631) producing the bend in the Crowbar.

I had issues with the flat frames in AstroArt6. A multi-coloured sky background reminiscent of the Two-Tone trousers of the 1970s (but with red in there), Deep Sky Stacker seemed happy with the flat frames, but the image it produced was not as crisp, so this is an AstroArt6 stack without the flat frames (and cropped to suit).

It is half the resolution of the original image, so about 1.6 arc seconds per pixel with a field of view of 51.5 x 49.2 minutes.

Files associated with this observation

NGC4631_NGC4656_20200302_204x30s_A6300_ISO4000_1000mmfl_f5_50pc_BAA.jpg (443.3 kB)

Like this image

Jeremy Shears, Clive Nanson, Mr Michael Alan Frost, Ray Emery, Miguel Araújo, Nick Hewitt, Graham Winstanley, Andy Wilson, Lyn Smith, Andrew Dumbleton

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