Observation by Mike Greenhill-Hooper: Nautilus galaxy

Uploaded by

Mike Greenhill-Hooper

Observer

Mike Greenhill-Hooper

Observed

2023 Jan 24 - 20:00

Uploaded

2023 Jan 28 - 15:45

Objects

NGC772

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Constellation

Aries

Field centre

RA: 01^h59^m
Dec: +19°00'
Position angle: +40°15'

Field size

0°18' × 0°12'

Equipment

Telescope: 20" f/4 Obsession Dobsonian; Paracorr coma corrector
ASI294MMPro with ZWO CMOS L(uv/IR cut) filter

Exposure

4x150x2 second exposures captured, calibrated and live stacked using SharpCapPro; camera gain 450, temp -15C

Location

Miradoux, S.W. France

Target name

NGC 772, Nautilus galaxy

Title

Nautilus galaxy

About this image

I was hoping to capture RGB images as well but a combination of dew on the optics (secondary mirror and coma corrector) and a mechanical 'event' that required telescope re-collimation caused a long enough delay that by the time I resumed imaging the object had disappeared behind an outbuilding in the garden, so I had to turn my attention to a new target. The only consolation was that field rotation was less of an issue in the short time I was capturing the luminance images, so less cropping was necessary.

Files associated with this observation

NGC772AF2-SharpenAI-StandardAFnoisesblemish2crop.jpg (245.2 kB)

Like this image

Richard Sargent, Alan Thomas, Gerard Cauchi, Peter Mulligan, Callum Potter

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