Iiro's DeepSky Sketches

Name: NGC 1857Other name: OCL 428
RA: 5h 20.1m DEC: +39° 21'
Constellation: AUR
Type: Open cluster
Magnitude: 7
Size: 6'
Number of stars: 40
Brightest star: 7.4
Classification: II 2 m
Description: Cl,pRi,pC,st7...
Notes: H VII 33
Observer: Iiro Sairanen
Location: Lakasenpelto, Imatra, Finland
Date: 20/21.12.2003 22:27
Instrument: Newton 406/1830 mm
Magnification: 146xFilter: -
Field: 21'Seeing: 4
Background sky: 4NE lim mag: 5
Visuality: IHeight: 66°
Weather: -12°C
Description: A poor open cluster which is hardly compressed. There is an orange star in the middle. About 25 stars.
Updated: 21.12.2003 18:11