(IAAC) NGC 2022 - 8" F/10

Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 2022 (PK 196-10.1; PN G196.6-10.9; ARO 61)
Category: planetary nebula
Constellation: ORI
Object data: Vmag=12.4; Bmag=11.6; 28x28"; type IV+II; central star of
Vmag=14.9 (Bmag=13.0); discovered by Herschel in 1785; ELCAT: [OIII,
496+501nm] = 9 x [Hbeta, 486nm].
RA/DE: 05h42.10m, +0905.2' (2000.0)
Date and UT of observation: 01 November 1991, 03h00UT
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual in UMi): 5.6
Transparency (1 to 5 - best to worst): 2
Seeing (1 to 5 - best to worst): 4
Moon up (phase?): no
Instrument: Meade SCT 8" (203mm), F/10
Magnification: 87-290x
Filters used: prism
Description: found at 87x, small nebulous patch confirmed with prism; a
mag10 star lies 12' to the W; medium brightness, homogeneous, bluish,
ill-defined edges; visible at 45x as a nearly stellar object, still
slightly fuzzy; at 145x, quite round; at 290x, still homogeneous without
Yann Pothier
11 impasse Canart, 75012 PARIS, FRANCE
To UNSUBSCRIBE from the 'netastrocatalog' lists, use the Web form at: