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BAA Images Martina McGovern

Observation by Martina McGovern: NGC 7635 Bubble Nebula

Uploaded by

Martina McGovern


Martina McGovern


2020 Sep 19 - 22:00


2020 Oct 01 - 17:26



Planetarium overlay



Field centre

RA: 23h20m
Dec: +61°12'
Position angle: +80°53'

Field size

0°30' × 0°20'

  • Celestron Edge HD 8” SCT, SkyWatcher HEQ5 PRO
  • ZWO ASI294MC Pro, main camera
  • ZWO ASIAir Pro, ZWO EAF (Electronic Automatic Focuser) & Dual-Speed 2-inch Crayford Focuser for SCT’s
  • ZWO 60mm Guide scope, ZWO ASI120MM mini, Guide camera
  • Optolong L-Pro Broadband filter, Optolong L-eXtreme dual band filter (Ha & OIII)

Approx 3.5hrs of data; 120s x 30 with L-pro, 180s x 60 with L-eXtreme & Darks, Flats & Dark flats. Gain 225, Camera T -15C


Near Cambridge city UK, Bortle approx 4

Target name

NGC 7635 Bubble Nebula, in constellation Cassiopeia, 11,090 Light years from us.


NGC 7635 Bubble Nebula

About this image

I’m a newbie to Deep sky photography. I have in the past few years done a little Planetary & Moon imaging with Celestron SE6 & ASI120MC on Alt-Az mount. Also, imaging with Ioptron Skytracker Pro & DSLR. Have enjoyed it all and wanted to take the hobby much further (no pun intended :)) – hence getting the 8” scope, Equatorial mount, CMOS cooled camera, ASIair Pro and filters etc.

ASIAir Pro is most definitely helping me immensely – I think it is brilliant – before buying the kit I had major worries about doing Polar align but ASIAir Pro takes away my worries – also the GoTo/Plate solving is incredible – the Wow factor of “dialling” in an object and then it appears will never get old for me. All controlled with my iPad.

I know I’m only scratching the surface of this new hobby but I’m really happy with my progress so far and most importantly I’m really enjoying it.

Apologies for the long preamble, just wanted to set the scene i.e. I’m a newbie but have a passion for the skies and want to learn more.

Imaged over two nights.

Processing; Deep sky stacker, Pixinsight with final tweaks in Photoshop + Topaz DeNoise AI.

Files associated with this observation
Like this image
Neil Morrison
Neil Morrison, 2020 Oct 01 - 18:57 UTC

A remarkable  series of images-- congratulations

Martina McGovern
Martina McGovern, 2020 Oct 01 - 19:56 UTC

Thanks, enjoying it - so much to see, well when weather permits :) 

John Hughes
John Hughes, 2020 Oct 03 - 18:57 UTC

Thank you for sharing your images, it’s a great hobby, rewarding us who take the opportunity to overcome the difficulties of photographing deep sky objects to see back into time and dark. This one, the Bubble Nebula, always makes me go “wow”.

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