Iiro's DeepSky Sketches

Name: NGC 6940	Other name: OCL 141
RA: 20h 34.4m	DEC: +28° 17'
Constellation: VUL
Type: Open cluster
Magnitude: 6.3
Size: 31'
Number of stars: 60
Brightest star: 9.3
Classification: III 2 m
Description: Cl,vB,vL,vRi,cC
Notes: H VII 8,100 * mags 9...
Observer: Iiro Sairanen
Location: Ania, Pirkkala, Finland
Date: 16/17.9.2009 0:35
Instrument: Newton 300/1500 mm
Magnification: 71x	Filter: -
Field: 57'	Seeing: 4
Background sky: 3	NE lim mag: 6.6
Visuality: I	Height: 48°
Weather: +5°C, moist
Description: Pretty large moderate cluster, stars 10-14 mag.
Updated: 19.11.2009 20:12