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(IAAC) Obj: M105, NGC 3384, NGC 3389 - Inst: TV-102 (102mm f/8.6 APO refractor)
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Observation Poster: Ron B[ee] <ronby@cox.net>
Observer: Ron B[ee]
Your skills: Intermediate (some years)
Date/time of observation: 02/15/02 11pm PST
Location of site: 117h 9m W (Lat 32h 43m N, Elev 2000 ft.)
Site classification: Exurban
Sky darkness: 5.7 <Limiting magnitude>
Seeing: 8, moisture, Light pollution obliterated <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: TV-102 (102mm f/8.6 APO refractor)
Magnification: 44x, 73x, 110x, 146x, 176x, 220x
Filter(s):
Object(s): M105, NGC 3384, NGC 3389
Category: External galaxy.
Class:
Constellation: Leo
Data: mag 9.3, 10.7, 12.4 size 5.3' x 4.7'/5.5' x 2.5'/2.7' x 1.3'
Position: RA : DEC :
Description:
M105 is a lot more interesting than M95/M96! At 44x, it seems to also take the
form of Auriga. There are two very pretty double-double stars both yellow
nearby. NGC 3384 can now be seen next to M105. At 73x, NGC 3389 can now be seen
with averted vision. M105 is slightly larger and a wee bit brighter than NGC
3384. Both galaxies had fuzzy core, at time stellar. Large nebulostiy seen with
M105. No core seen in NGC 3389 and appeared more diffused than NGC 3384; it is
much, much dimmer than NGC 3384. All three galaxies got a better view at 146x
being brighter. NGC 3389 now seemed to have a bright core with averted vision.
176x made the core brighter in M105 and NGC 3384. NGC 3389 got dimmer but noted
non-stellar core. At 220x (4mm Radian), the core and outer nebulosity of M105
and NGC 3384 showed grainy texture. NGC 3389 can still be seen but very
diffused. This is the **first** NGC galaxy that can take 220x and still show
more detail through the weeny 4-inch of aperture!
I simply can't figure how Messier could have missed NGC 3384!
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