Iiro's DeepSky Sketches

Name: Messier 8	Other name: NGC 6523
RA: 18h 3.7m	DEC: -24° 23'
Constellation: SGR
Type: Cluster + nebulosity
Magnitude: 5
Size: 45' x 30'
Surface brightness: 13
Classification: E
Description: !!!,vB,eL,eiF,w L Cl
Notes: Lagoon Nebula,Cl NGC 6530 invl,dark lane crosses neb
Observer: Iiro Sairanen
Location: Boca de Tauce (1980m), Tenerife, Spain
Date: 16/17.4.2004 4:10
Instrument: Newton 110/805 mm
Magnification: 47x	Filter: -
Field: 64'	Seeing: 3
Background sky: 2	NE lim mag: 6.9
Visuality: II	Height: 29°
Weather: +2°C, moist
Description: Whole field was full of nebulosity. The nebula has five different parts and several brightenings. In the middle of nebula there is a huge dark lagoon which strolls trough the brightest parts of the main-nebula. Open cluster NGC 6530 is quite strange: stars lies almost systematic in same lines and columns.
Updated: 15.5.2004 12:35