Observation by Les Dickens: Messier 51 ("Whirlpool")

Uploaded by

Les Dickens

Observer

Les Dickens

Observed

2018 May 14 - 00:00

Uploaded

2018 May 16 - 14:29

Objects

The Whirlpool Galaxy (M51)

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Constellation

Canes Venatici

Field centre

RA: 13^h29^m
Dec: +47°12'
Position angle: -97°01'

Field size

0°48' × 0°33'

Equipment

200mm F6 Newtonian
QHY9s mono camera
Processed with IRIS software

Exposure

60x70s (luminance); 15x70s (S-II); 15x70s (O-III); 15x70s (H-α)

Location

Cheltenham, Glos.

Target name

NGC 5194 (M51)

Title

Messier 51 ("Whirlpool")

About this image

F6 Newtonian telescope + QHY9S mono camera.

A first attempt at using LRGB techniques. Luminance 60x70s and 15x70s each of S-II (red), O-III (green) and H-β (blue). Relatively successful, but I was almost caught out by not realising the need to refocus the telescope when switching to the narrow band filters. I found it quite difficult to get good focus given the faintness of the filtered images .

All images processed using IRIS software.

Files associated with this observation

NGC 5194 (M51) 60x70s 2018.05.13 - Colour.jpg (394.7 kB)

Like this image

Peter Taylor, Jeremy Shears, Graham Winstanley, David Basey, Andy Wilson, Peter Carson, Peter Mulligan, Callum Potter

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