Basic object information

Object name: NGC 40
Object type: Planetary nebula
Magnitude: 12.3
Size: 1.2'
Magnitude of central star: 11.5
Object classification: 3b(3)
Description: F,vS,R,vsmbM,L*cont f
Notes: H IV 58;PK120+9.1;Lord Rosse saw spiral structure

Catalog information

RA (J2000.0): 00h 13m 00.0s
Dec (J2000.0): +72 31' 00"

Constellation: Cepheus

Observer: Iiro Sairanen
Obs. place: Härskiänsaari, Ruokolahti, Finland
Date/Time: 3/4.11.2004 20:15

Telescope: Newton 406/1830mm

Magn: 487x

Filter: UHC

Field: 6'

NE Lim.mag: 6.2

Background sky: 4

Seeing: 3

Height: 76
Visuality: I
Weather: +3C, windy, 63% Moon is rising in NE

Extensive and bright planetary in Cepheus. Conspicuous central star (11.5 mag) and ring structure is visible even at low powers. The ring around the outer section is broken in N and S edges at 487x. Central hole is covering by bright haze which brightness is changing teasingly.