Observation by Nick James: Perseus

Uploaded by

Nick James

Observer

Nick James

Observed

2017 Nov 25 - 22:41

Uploaded

2017 Nov 26 - 08:12

Objects

Mirfak
The Spiral Cluster (M34)
Widefield

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Constellation

Perseus

Field centre

RA: 02^h46^m
Dec: +51°15'
Position angle: -91°31'

Field size

24° × 16°

Equipment

Sony A7s + Canon 85mm, f/1.2

Exposure

24x30s

Location

Chelmsford, UK

Target name

Perseus

Title

Perseus

About this image

The Sony mirrorless camera allows me to try out some old Canon FD lenses. This image was taken with the legendary Canon 85mm f/1.2L FD lens which I have borrowed from Martin Mobberley. Martin used this lens for his nova patrol many years ago following the lead of Rob McNaught but when Canon changed to the EF mount all of these old FD lenses became useless. Until now. This is the result at f/1.4. The full sized image is here. The stars are definitely soft at the corners but pretty good in the middle. I'll try this lens at f/2 next time.

Files associated with this observation

final_baa.jpg (1.9 MB)

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David Swan, David Basey, Jeremy Shears, Graham Winstanley, Andrew Paterson, Peter Carson, Robert James Stuart

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