Object(s): M 87, NGC 4486, MAC 1230+1234, UGC 7652, MAC
1230+1221, NGC 4476, NGC 4678, NGC 4486A
Observer: Mark G.Birkmann
Your skills: Intermediate (some years)
Date/time of observation: 3-5-2000, 8:30 UT, (2:30 CST)
Location of site: New Haven, Missouri (Lat ~38, Elev
~700 feet)
Site classification: Rural
Sky darkness: 5 <1-10 Scale (10 best)>
Seeing: 5 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 40" f/5 dob
Magnification: 235x
Filter(s): none
Category: External galaxy.
Class: E+O-1 pec Sy
Constellation: Virgo
Data: mag 9.59 size 8.3 x 6.6
Position: RA 12h:30m49.4233s DEC +12:23'28.043"
Description:
This bright galaxy is easy to find in northern virgo
between the naked eye stars 30 Vir and 6 Com. At first glance I saw
nothing noteworthy, just a large elliptical galaxy that was bright in the
middle and gradually faded towards the edges. But after a time I
noticed a faint star embedded in the southeast side of the galaxy and two
very small nebulous streaks near the edge of the galaxy on the southwest
side. Since I was observing this galaxy with the hope of seeing the
jet, as a result of reading a successful observation in a 20", I immediately
assumed that I was seeing two of the brighter portions of the jet.
I wrote down some notes and began to sketch what I was seeing, including
two relatively bright galaxies not far to the west and one nearly stellar
galaxy to the south. However, as I was observing I began to notice
a small, bright, thin extension of the core on the northwest side of the
core that was visible during moments of good seeing. I drew it in
and labeled it with a question mark wondering if this was the jet rather
than the first nebulous areas I had seen. Then I decided to call
it a night since it was late and I had to get up early the next day.
After doing a little research I found that what I had first thought were
two bright portions of the jet were actually galaxies UGC 7562, mag 16.8,
and MAC 1230+1221, mag ?. The jet turned out to be the small feature
I had noticed near the core, MAC 1230+1224 according to MegaStar.
The jet was a difficult observation due to the average seeing on this night.
But I think it would be visible in 20" or possibly smaller scopes under
good conditions since it appeared to be fairly bright. Note added
4/12/00: The observation to which I refer was made by Andrew Murrel.
It can be seen by searching for m87 on the IAAC
site. |