Iiro's DeepSky Sketches

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Name: NGC 6946 + SN2004etOther name: UGC 11597
RA: 20h 34.9m DEC: +60° 9'
Constellation: CEP
Type: Galaxy
Magnitude: 8.8
Size: 11.2' x 9.8'
Surface brightness: 13.8
Classification: SBc
Description: vF,vL,vg,vsbM,rr
Notes: H IV 76,One of nearest spirals
Observer: Iiro Sairanen
Location: Härskiänsaari, Ruokolahti, Finland
Date: 11/12.10.2004 22:50
Instrument: Newton 406/1830 mm
Magnification: 146xFilter: -
Field: 21'Seeing: 3
Background sky: 2NE lim mag: 6.5
Visuality: IIIHeight: 74°
Weather: +0°C, good
Description: This face-on galaxy has a low surface brightness and needs a good skies. In these conditions and equipment this was a pretty bright object. The core is highly elongated in N-S direction and quite large. Spiral structure is obvious. The massive eastern spiral arm is visible with direct vision, it ends just little before SN2004et. There is also another arm between the core and eastern arm. Its quite faint but clearly visible with averted vision. The western arm is much fainter than eastern. Several stars lies on the galaxy.
Updated: 22.10.2004 15:04
Name: NGC 6946 + SN2004etOther name: UGC 11597
RA: 20h 34.9m DEC: +60° 9'
Constellation: CEP
Type: Galaxy
Magnitude: 8.8
Size: 11.2' x 9.8'
Surface brightness: 13.8
Classification: SBc
Description: vF,vL,vg,vsbM,rr
Notes: H IV 76,One of nearest spirals
Observer: Iiro Sairanen
Location: Lakasenpelto, Imatra, Finland
Date: 4/5.10.2004 21:40
Instrument: Newton 406/1830 mm
Magnification: 244xFilter: -
Field: 12'Seeing: 3
Background sky: 4NE lim mag: 5.1
Visuality: IIIHeight: 83°
Weather: +2°C, dense fog, 65.5% moon was rising in NE
Description: Appears as a ~12.5 mag star. NGC 6946 was visible weakly at low magnifications but not at 244x in these foggy conditions. The faintest stars in the sketch are somewhat 15 mag.
Updated: 5.10.2004 19:42
Name: NGC 6946Other name: UGC 11597
RA: 20h 34.9m DEC: +60° 9'
Constellation: CEP
Type: Galaxy
Magnitude: 8.8
Size: 11.2' x 9.8'
Surface brightness: 13.8
Classification: SBc
Description: vF,vL,vg,vsbM,rr
Notes: H IV 76,One of nearest spirals
Observer: Iiro Sairanen
Location: Härskiänsaari, Ruokolahti, Finland
Date: 11/12.9.1999 1:15
Instrument: Newton 110/805 mm
Magnification: 54xFilter: -
Field: 47'Seeing: 2
Background sky: 2NE lim mag: 6.2
Visuality: IVHeight: 0°
Weather: +6°C
Description: Pintakirkkaudeltaan erittäin himmeä. Näkyi parhaiten pienillä suurennuksilla. 96x ei enää näkynyt ollenkaan.
Updated: 20.3.2003 11:17