Iiro's DeepSky Sketches

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Name: NGC 1664Other name: OCL 411
RA: 4h 51.1m DEC: +43° 41'
Constellation: AUR
Type: Open cluster
Magnitude: 7.6
Size: 18'
Brightest star: 10.6
Classification: III 1 p
Description: Cl,lRi,lC,pL
Notes: H VIII 59,40* mags 11...
Observer: Iiro Sairanen
Location: Lakasenpelto, Imatra, Finland
Date: 20/21.12.2003 20:10
Instrument: Newton 406/1830 mm
Magnification: 107xFilter: -
Field: 28'Seeing: 4
Background sky: 4NE lim mag: 5
Visuality: IHeight: 59°
Weather: -10°C
Description: A poor cluster...fairly 40 stars between mags 11-13.
Updated: 21.12.2003 18:08