My Astrophotography – Caldwell 11 (Bubble Nebula)

Caldwell 11 (NGC7635 / Sh2-162 / The Bubble Nebula)

• Caldwell 11, the Bubble Nebula, is a glowing cloud of gas in Cassiopeia.
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• A huge, hot star is blowing a bubble into space – a shell about 8 light‑years wide.
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• The star’s wind hits a nearby cloud, shaping the bubble and pushing it off‑centre.
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• It lies around 7,000 light‑years away and sits close to the star cluster M52.
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• Object Name
  C11

• Object Type
  Emission Nebula

• Constellation
  Cassiopeia

• Magnitude
  8.7

• Distance
  7,000 light-years

• Annotate

Telescope:

Mount:

Accessories:

Sky-Watcher Esprint 80ED Triplet

Sky-Watcher AZ-EQ6 GT

ZWO ASIair Plus / PixInsight

Camera:

Guiding:

Filter:

ZWO ASI2600MC Pro cooling

ZWO ASI1200MM

2″ Optolong eNchance

• Date:
  Wednesday 25th November 2025

• Moonlit:
  Waxing Crescent 5 days old
  Magnitude: -11.2
  Moonlit: 24%

• Total:
  180’s x 50 subs = 2 hours 30 minutes

Object :-

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Object :-

Other name :-

Type :-

Magnitude :–

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Right Ascension :-

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C11

NGC7635 / Sh2-162 / The Bubble Nebula)

Emission Nebula

8.7

11,000 light years / 8 light years across

Cas (Cassiopeia / The Cassiopeia Queen)

23h 20m 48s

+61° 12′ 06″

Enlarge on click the map.

(Click the map above for a large view.)