Iiro's DeepSky Sketches

Name: NGC 2237Other name: OCL 511
RA: 6h 30.9m DEC: +5° 3'
Constellation: MON
Type: Cluster + nebulosity
Magnitude: 5.5
Size: 80' x 60'
Classification: E
Description: pB,vvL,dif,part of eL nebs ring ar 2239
Notes: Rosette nebula
Observer: Iiro Sairanen
Location: La Cogolla, Gran Canary, Spain
Date: 31/1.2.2005 23:10
Instrument: Newton 110/805 mm
Magnification: 20xFilter: UHC/O-III
Field: 149'Seeing: 3
Background sky: 2NE lim mag: 6.4
Visuality: IIIHeight: 66°
Weather: +10°C, windy
Description: Rossette Nebula. This is an impressive object! The nebulosity is annular and brightest on the NW edge. A UHC or O-III filter makes the nebula stand out much better and improves the contrast. Bright open cluster NGC 2239 lies in the middle of the ring.
Updated: 6.3.2005 15:46