Object of the Season

The Webb Deep-Sky Society requested observations for the following deep-sky objects. Findings are published in the Deep Sky Observer (DSO).

Observations should be sent to Wolfgang Steinicke , Gottenheimerstr. 18, D-79224 Umkirch, Germany.

Object of the Season (Autumn 2018)

Emission Nebula NGC 7635 in Cassiopeia

This is the famous Bubble Nebula, located half a degree southwest of the open cluster M52. This HII region was found by William Herschel on 3 November 1787. The nebula is visible with an 8 or 10-inch plus OIII filter. The nearby 7 magnitude star on the west hinders observation. The elongated shape appears with larger aperture (16-inch).

NGC 7635 in Cassiopeia - Credit NASA, ESA, Hubble Heritage Team
NGC 7635 in Cassiopeia - Credit NASA, ESA, Hubble Heritage Team.
Name
NGC 7635
Position (2000)
23 20 48.3 +61 12 06 (Cas)
Type
emission nebula
Magnitude
11
Size
15' x 8' (4 ly)
Distance
9000 ly
Other Designations
IV 52, h 2235, GC 4947, LBN 549, Sh2-162

Results of the observations of NGC 7635 will be published in DSO 182.

Wolfgang Steinicke - Nebulae and Clusters Section Director

Previous Objects of the Season