Iiro's DeepSky Sketches

Name: NGC 7243Other name: OCL 221
RA: 22h 15.1m DEC: +49° 54'
Constellation: LAC
Type: Open cluster
Magnitude: 6.4
Size: 21.0'
Number of stars: 40
Brightest star: 8.5
Classification: IV 2 p
Description: Cl,L,P,lC,st vL
Notes: H VIII 75,Incl Struve 2890 D*
Observer: Iiro Sairanen
Location: Ania, Pirkkala, Finland
Date: 16/17.9.2009 23:50
Instrument: Newton 300/1500 mm
Magnification: 71xFilter: -
Field: 57'Seeing: 4
Background sky: 3NE lim mag: 6.6
Visuality: IHeight: 71°
Weather: +5°C, moist
Description: Beautiful open cluster because there is a large range in magnitudes. The brightest stars are 9th mag whereas dozens 12-14 mags twinkled all around the background.
Updated: 19.11.2009 20:14