Iiro's DeepSky Sketches

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Name: NGC 3990Other name: UGC 6938
RA: 11h 57.6m DEC: +55° 27'
Constellation: UMA
Type: Galaxy
Magnitude: 12.6
Size: 1.4' x 0.8'
PA: 40°
Surface brightness: 12.6
Classification: E-SO
Description: pF,S,lE,pslbM
Notes: H II 791,P w NGC 3998 at 2.9',PA96
Observer: Iiro Sairanen
Location: Haakanala, Rautjärvi, Finland
Date: 21/22.4.2012 2:30
Instrument: Newton 457/2280 mm
Magnification: 457xFilter: -
Field: 9'Seeing: 3
Background sky: 2NE lim mag: 6.5
Visuality: IHeight: 63°
Weather: -3°C, astronomical twilight
Description: Elongated in NE-SW. Round NGC 3998 on the east-side.
Updated: 4.11.2012 20:27