Bubble Nebula
RA 23h 27m · Dec +61° 29′
10′

A spherical emission nebula blown out by the stellar wind of the massive O-star BD+60°2522 at its edge — not its centre. The bubble is lit unevenly because the star sits off-centre in a denser cloud. Invariably imaged alongside M52 in the same field.

Emission nebula

Bubble Nebula

NGC 7635 · Cassiopeia
These photons are ~11,000 years old
LPBroadband light-pollution filter. Suppresses the sodium and mercury glow of streetlights while passing the main nebula emission lines and natural star colours.ZWO Seestar S50ZWO Seestar S50Aperture 50mm · Focal length 250mm · f/5 · Apo triplet with ED element · Sony IMX462 colour CMOS sensor (1920 x 1080, 2.1MP)…View equipment →
⧉ 5 versions of this capture — pick one to see its image and log
Date
24/09/2025
Location
36.3858° N, 28.0412° E
Integration
46m (274 × 10s)
Software
ZWO Seestar app
Notes
·
Total effort
2h 54m over 1 night
Moon
🌒Waxing crescent, 5% lit
Plate solve
Centre RA
23h 26m 49.4s
Centre Dec
+61° 28′ 52″
Field
55.7′ × 98.9′
Pixel scale
2.38″/px
Orientation
58.7° E of N
Hemisphere
Northern
Also in this frame
M52C11

Catalogued objects inside the plate-solved field, nearest the centre first. Highlighted names have their own photo here.

TelescopeZWO Seestar S50
CameraZWO Seestar S50 Camera
RigFamily Holiday Rig

Where to find it

Finder chart
+61°+61°30′+62°23h20m23h22m23h24m23h26m23h28m23h30m23h32m23h34mM 52NGC 7635NE55.7′ x 98.9′10′

Star field and catalogued objects inside the plate-solved field, oriented to the solve. Fully offline, from the bundled star and deep-sky catalogues.

Interactive sky chart centred on 23 26 49.4 +61 28 52. Drag to pan, scroll to zoom, click a star or object to identify it. Zoom in to the plate-solved field for the DSS survey photo; zoom out for constellation figures and neighbouring catalogue objects. Fully self-hosted: the star and deep-sky catalogues and the survey image are all served from this site, so nothing external loads. Imagery: DSS2 colour (STScI / POSS-II). Constellation figures © Dominic Ford (GPLv3).

Captured from · Ρόδος (Rhodes)
36.3858° N, 28.0412° E · view on OpenStreetMap ↗ · Place data © GeoNames (CC BY)

Frequently asked questions

What kind of object is NGC 7635?
NGC 7635 is an emission nebula.
Which constellation is NGC 7635 in?
NGC 7635 lies in the constellation Cassiopeia.
How far away is NGC 7635?
The light in this image left NGC 7635 roughly ~11,000 years ago, so that is how far back in time you are seeing it.
What are the coordinates of NGC 7635?
NGC 7635 sits at right ascension 23h 26m 49s and declination +61° 28′ 52″ (J2000).
When is the best time to photograph NGC 7635?
NGC 7635 is circumpolar from around 36°N - it never sets, and rides highest (about 65° altitude) on evenings around September.
What else is in this frame?
The plate-solved field also contains M52 and C11.
What equipment was used to photograph NGC 7635?
This image of NGC 7635 was captured with ZWO Seestar S50 Camera and ZWO Seestar S50.
How much exposure time went into this image?
This image of NGC 7635 represents 46m (274 × 10s) + 32m (190 x 10s) of total integration time.

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