(IAAC) Obj: M2-9 (PK10+18.2, PNG010.8+18.0, VV92, Minkowski's Butterfly) - Inst: 17.5" f/4.5 dob
Observer: Steve Gottlieb
Your skills: Advanced (many years)
Date and UT of Observation: 09 July 1999
Location: Sierra foothills, CA USA (Elev 900m)
Site classification: Rural
Limiting magnitude: 6.4 to 6.8
Seeing: Fair to very good
Moon presence: None - moon not in sky
Instrument: 17.5" f/4.5 dob
Magnification: 100x?, 220x?, 380x
Filters used: None. UHC. OIII.
Object: M2-9 (PK10+18.2, PNG010.8+18.0, VV92, Minkowski's Butterfly)
Category: Planetary nebula.
Class: ?+6 (Protoplanetary)
Data: Mag 14.6 15.65m*; Size 39"x15"
Position: 170537.9 -100834
[Editor's Note: This weird lovely object can be located in a field 4o
E of 20 Oph (mag 5), at the N vertex of an equilateral triangle formed
with mag 6 star HD 155078, and the orange-colored mag 7 star HD 154212.
The PN itself lies near the E-most of a rectangle of stars mag 10-11.]
17.5" (7/9/99): Picked up at low power but best viewed at 380x. The
faint central star is cleanly resolved with two thin "jets" extending
N-S, roughly 15" on either side of the star. The nebulosity dims
slightly near the central star but is not detached. This unusual bi-
polar object looks more similar to a fairly faint edge-on galaxy than a
PN although the tips of the extensions do not noticeably taper. There
was no noticeable response to either the OIII or UHC filters!
[Reposted with the observer's permission from "Planetary_Nebulae"...]
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