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Observation by Mike Greenhill-Hooper: M33

Uploaded by

Mike Greenhill-Hooper

Observer

Mike Greenhill-Hooper

Observed

2022 Jan 22 - 20:00

Uploaded

2022 Jan 30 - 17:29

Objects

The Triangulum Galaxy (M33)

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Constellation

Triangulum

Field centre

RA: 01h33m
Dec: +30°38'
Position angle: -89°56'

Field size

1°09' × 0°47'

Equipment
  • 770 f/7 ED TS Photoline refractor
  • NEQ6 mount
  • ASI294MM Pro imaging camera
  • ASI224MC guide camera - OAG / PHD2
Exposure

10x120s for each of L, R, G, B; 8x300s for H-alpha; gain 121, offset 10

Location

Miradoux, S.W. France

Target name

M33

Title

M33

About this image

M33 west of meridian.  By the end of the imaging session it's elevation in the west was relatively low. In addition after 10:30 local time the moon had risen.  Still encountering star bloating with L and B filters. I now believe this is due to the optical limitations of the doublet; adding a uv-cut filter did not help. I may have to confine its use to narrowband imaging.  Probably needed to collect more images. Imaging, dithering and goto (plate solving method) all managed via APT.

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