(IAAC) Obj: NGC 2438 - Inst: TV-102 (102mm f/8.6 APO refractor)

Observation Poster: Ron B[ee] <ronby@home.com>
Observer: Ron B[ee]
Your skills: Intermediate (some years)
Date/time of observation: 01/05/02 11:00PST
Location of site: 117h 9m W (Lat 32h 43m N, Elev 2000 ft)
Site classification: Exurban
Sky darkness: 5.0 <Limiting magnitude>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: TV-102 (102mm f/8.6 APO refractor)
Magnification: 22x, 30x, 60x, 110x, 146x, 220x, 293x
Filter(s): none
Object(s): NGC 2438
Category: Planetary nebula.
Constellation: Pup
Data: mag 10.0  size 1.2' x 1.1'
Position: RA :  DEC :
Tonight, the TV-102 spent a great deal of time with M46, more than 45
minutes! The goal was to bag the NGC 2438 nemesis since my old 4"
C102-HD achromat had utterly failed to catch it, perhaps because I 
was misled at the time by the beautiful photos or perhaps I was much 
more of tyro then, trying to nail my first PN.  There was some breeze
So tonight, I decided to play hide-and-seek, i.e., looking for the PN
without filter. If you haven't tried this, it's fun especially at
low and medium power. At 22x (40mm Pentax XL) with 3 deg FOV, M46 
and M47 are visible within the same FOV. There is a very bright mag 
5 orange star (SAO 153227) not too far away. 22x and 30x failed to 
find it; it hid so well. Not knowing its location and after 5 min. 
of panning around at 60x, the TV-102 finally spotted the "nugget"
;-). Stars in the clusters are pin-pricked with the mag 8.7 orange 
star SAO 153250 standing out at these 3 magnifications. Using the 
8mm TV Radian PN killer (110x), NGC 2438 was clearly nailed, near a
V-shape star group in the area devoid of stars. The PN looked like
a dim, gray haze and looked round with averted vision. 146x (6mm 
Radian) afforded a better view with darker background, round shape 
with averted vision. At this juncture, I realized that it's quite 
large, a wee bit smaller than Jupiter. Still a good view at 220x 
(4mm Radian), round, gray color with no loss of brightness. Loss 
some brightness at 293x (3mm Radian), but the round shape can still 
be detected.
Optional related URLs: 
** This observing log automatically submitted via the Web from:
To stop receiving all 'netastrocatalog' lists, use the Web forms at: