(IAAC) PK189+7.1 in Gem, AZ

Observer: Steve Coe
Your skills: Expert
Date and of Observation: 27 Dec 1997
Location: near Sentinel, Arizona
Site classification: rural
Limiting magnitude: 6.6 
Seeing: 7/10, very good
Moon up: no
Instrument: 13" f/5.6 Newtonian on "Bigfoot" German Equatorial Mount
Magnification: 100X, 220X
Filters used: UHC
Object: PK189+ 7.1, also M1-7
Category: Planetary Neb.
Constellation: Gem
Data: 13 mag, 38"X20", cent. star 18.5 mag
RA/DE: 6 hr 37.4  +24 01  Uran.chart #137
Description:  At 100X this planetary was just noticed as non-stellar.
Going up to 220X with the Meade 8.8mm UWA eyepiece makes it an
obvious disk which is pretty bright, pretty small, smooth disk which
is very light grey-green with no star involved.  The disk is very
little elongated 1.2X1 in PA 135.  Using the UHC filter really
helps the contrast of this nebula.