Observation by Peter Tickner: No telescope required!

Uploaded by

Peter Tickner

Observer

Peter Tickner

Observed

2022 Jan 05 - 20:00

Uploaded

2022 Jan 06 - 18:47

Objects

The Pleiades (M45)

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Constellation

Taurus

Field centre

RA: 03^h46^m
Dec: +24°07'
Position angle: +4°15'

Field size

2°26' × 1°51'

Equipment

ZWO ASI2600MC Pro
Sigma 170 mm - 500 mm Zoom for Canon cameras
ZWO camera to lens adapter
EQ6 mount

Location

Urban Berkshire

Target name

M45 - Pleiades

Title

No telescope required!

About this image

I've been experimenting recently to see if any of my zoom lenses for use with a Canon DSLR would work with my ZWO deep sky cameras. The results with a 75-300 mm Canon Zoom lens were disappointing due to its lack of light gathering ability. The larger Sigma Zoom has done better although it is reluctant to give round stars if pushed to its highest magnification.

This image has been cropped to get rid of the worst distortion of stars at the edges of the field of view and with the Sigma Zoom set at 300 mm. No flats or darks so surprisingly OK in the circumstances!

Peter

Files associated with this observation

cccDSS 42x5m Max-DeNoiseBAA.jpg (1.9 MB)

Like this image

Andrew Paterson, Nick Hewitt, Ron Arbour, Martin Lewis, Simon Paul Davis, Nick Quinn, stan armstrong, Sally Russell, Peter Carson, Dr Paul Leyland

Comments

Simon Paul Davis, 2022 Jan 07 - 16:10 UTC

Nice results! What F number on the zoom lens?

Peter Tickner, 2022 Jan 07 - 23:58 UTC

The Sigma zoom lens runs from f5 at 170 mm to f/6.3 at 500 mm so I imagine it was operating at around f/5.5 to 6 for my image.

Dr Paul Leyland, 2022 Jan 10 - 16:51 UTC

Amazing.

Around here the sky background would be orange.

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