British Astronomical Association
Supporting amateur astronomers since 1890

BAA Images Martina McGovern

Observation by Martina McGovern: Markarian’s Chain: M84, M86, NGC ...

Uploaded by

Martina McGovern

Observer

Martina McGovern

Observed

2021 Jan 25 - 23:30

Uploaded

2021 Mar 16 - 23:00

Objects

M84
M86
NGC4435
NGC4438
NGC4388

Planetarium overlay









Constellation

Virgo

Field centre

RA: 12h27m
Dec: +13°00'
Position angle: -41°17'

Field size

1°15' × 1°47'

Equipment
  • SharpStar 100Q II (Focal length 580mm, Focal Ratio f/5.8) refractor
  • SkyWatcher HEQ5 PRO (Belt mod)
  • ZWO ASI294MC Pro, main camera
  • ZWO ASIAir Pro, ZWO EAF (Electronic Automatic Focuser)
  • ZWO 50mm Guide scope, ZWO ASI120MM mini, Guide camera
  • Optolong L-Pro Broadband filter
Exposure

Total exposure time; Approx 4hrs of data with L-Pro; Subs of mainly 300sec & 180sec with a few 600sec + Darks, Flats & Dark flats. Main Cam Gain 225, Camera T -15C

Location

Near Cambridge city UK, Bortle approx 4

Target name

Markarian’s Chain M84, M86, NGC 4438 etc

Title

Markarian’s Chain: M84, M86, NGC 4438 etc

About this image

This is part of the Markarian’s chain, in Virgo – so many galaxies – what a beautiful region of the sky. Many of the galaxies you can see in this image are approx 50 million Light years away, M84 is 60MLyrs….. A few are 65MLyrs e.g. NGC 4388 & IC 3349.

 

I have been working on this one for nearly 2 months (weather and Moon are the limiting issues) – so far it is only 4hrs of data. I want to image it again but with a wider FOV when I get more pocket money :) Or learn how to do mosaics.

 

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

Files associated with this observation
Like this image
Comments
Martin Lewis
Martin Lewis, 2021 Mar 17 - 13:02 UTC

Wonderful image Martina. If you can match the processing with a further neighbouring image Microsoft ICE does a great job of the stitch together - it's seamless

Martin

Callum Potter
Callum Potter, 2021 Mar 17 - 14:35 UTC

Nice image Martina - always a favourite for the spring months, well done on the early start.

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of work by third parties is expressly forbidden without the consent of the copyright holder. By submitting images to this online gallery, you grant the BAA permission to reproduce them in any of our publications.