Observation by Ian Sharp: M33 - The Triangulum Galaxy

Uploaded by

Mr Ian David Sharp


Ian Sharp


2021 Oct 11 - 22:00


2021 Nov 01 - 10:36


The Triangulum Galaxy (M33)

  • Takahashi FSQ-85EDX f/5.3 Quadruplet APO Refractor
  • QHY268C CMOS OSC Camera
  • Skywatcher AZ-EQ6 Pro Mount
  • Pegasus Astro FocusCube2 auto focuser
  • ZWO 60mm F/4.67 guide scope
  • ZWO ASI290MM Mini mono guide camera
  • Optolong Dual-Band L-eXtreme Filter

72 x 300s L and 16 x 600s L-eXtreme filter for Ha


Ham Observatory, Near Selsey, UK

Target name

M33 Galaxy in Triangulum


M33 - The Triangulum Galaxy

About this image

Using the one-shot colour QHY268C CMOS camera, the image consists of 6 hours of 5 minute exposures using an Astronomik L filter and 2.67 hours of narrowband using the Optolong L-eXtreme filter from which the H-Alpha signal was extracted. All processing was performed in PixInsight. All images were calibrated with Darks, Flats and Flat-Darks. The Ha data was combined with the red channel to enhance the wonderful nebulae within the spiral arms of M33. The image is cropped by about a quarter.

For more details see here: http://www.astro-sharp.com/2021/10/22/m33-the-triangulum-galaxy/

For pictures of my imaging setup see here: http://www.astro-sharp.com/2021/09/29/my-new-deep-sky-imaging-setup/

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