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Observation by Ian Rothwell: NGC7635 (Hα)

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Ian Rothwell


Ian Rothwell


2018 Oct 09 - 19:05


2018 Oct 09 - 19:17



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Field centre

RA: 23h20m
Dec: +61°11'
Position angle: +126°58'

Field size

0°27' × 0°19'

  • SkyWatcher Explorer 150P
  • ZWO ASI1600MMCool Pro
  • ZWO EFW 1.25" x 8
  • Baader Hα filter

300sec single exposure


Bournemouth, Dorset

Target name

NGC7635 (Bubble Nebula)


NGC7635 (Hα)

Files associated with this observation
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David Swan
David Swan, 2018 Oct 09 - 22:06 UTC

Very impressive that you've got such a good dynamic range here. I've also imaged this object and the stars in the middle can overwhelm the nebulous material. No doubt the Halpha helped.

Ian Rothwell
Ian Rothwell, 2018 Oct 09 - 23:09 UTC

Thanks David. It's a very clear night here in Bournemouth, so I'm taking advantage of it. I'm currently doing both narrow band Halpha, OIII and SII as well as LRGB for the Bubble Nebula. I just had to post that initial image because I was surprised that in just one exposure I could see so much detail. Narrow band filters definitely  help in a sub-urban location. Thankfully, as I'm to the North edge of the town I have dark skies to the North so I try to concentrate on objects near the pole.

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