Observation by Martina McGovern: M65, M66 & NGC 3628 galaxies –...

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Martina McGovern


Martina McGovern


2021 Jan 17 - 23:00


2021 Feb 20 - 21:54



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Field centre

RA: 11h20m
Dec: +13°13'
Position angle: -131°19'

Field size

1°46' × 1°10'

  • SharpStar 100Q II (Focal length 580mm, Focal Ratio f/5.8) refractor
  • SkyWatcher HEQ5 PRO
  • ZWO ASI294MC Pro, main camera
  • ZWO ASIAir Pro, ZWO EAF (Electronic Automatic Focuser)
  • ZWO 30mm Guide scope, ZWO ASI120MM mini, Guide camera
  • Optolong L-Pro Broadband filter

Total exposure time; Approx 9hrs of data with L-Pro; Subs of mainly 120sec & 180sec with a few 300sec & 600sec + Darks, Flats & Dark flats. Main Cam Gain 100, Camera T -10C


Near Cambridge city UK, Bortle approx 4

Target name

M65, M66 & NGC 3628 galaxies – the Leo triplet


M65, M66 & NGC 3628 galaxies – the Leo triplet

About this image

Imaged over four nights, 17th 21st 23rd Jan21 and 3rd Feb21.

Was trying to show the long tail of the “Hamburger” galaxy NGC 3628, could see it a bit but whilst processing to get the “black point” aesthetically pleasing the tail got lost – I will have to keep building on my data for this object.

This group of galaxies is approx 35 million Light yrs away, in constellation Leo.


Processing; Deep sky stacker, PixInsight with final tweaks in Photoshop and Topaz DeNoise.

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