Emission nebula · Cassiopeia

NGC 7635 Bubble Nebula

Also known as: C11, LBN 548

mag 11.015′ across

About

NGC 7635, the Bubble Nebula, is an emission nebula of magnitude 11.0 in Cassiopeia, about 15′ across.

NGC 7635 is in the constellation Cassiopeia.
Best evenings: around late October it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
Where on Earth: it is seen well, at least 10° up, from north of 19° S.

When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.

EyesNot visible to the naked eye.
Binoculars (10×50)Too faint for most binoculars.
Telescope (6–8 inch)A faint glow — a UHC or OIII filter and a dark sky make the difference.

For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.

Designations	NGC 7635, C11, LBN 548
Type	Emission nebula
Magnitude	11.0The smaller the number, the brighter.
Apparent size	15′ × 8′the full Moon is 31′ across
Constellation	Cassiopeia
Right ascension (J2000)	23h 20m 45.6s
Declination (J2000)	+61° 12′ 45″