On Nov 28, 2006, at 9:52 AM, Mark Wagner wrote:
> From: RichardN22_at_aol.com said:
>
>> Has anyone seen Jones 1 visually? I think Mark Wagner has.
>>
>>
>> Richard
>>
>
> It is not a difficult object. Steve Gottlieb is the one who got me
> to look at it.
Here are some selected observations from the past 20 years (I
generally observe it every year as its one of my favorites)
18" (11/6/04): Faintly visible unfiltered at 115x which also reveals
a number of faint stars are peppered across the face of the planetary
(several in a string). Beautiful view of this huge annular planetary
at 115x and OIII filter with two, fairly narrow bright arcs along the
north and south side and a dark center. The northern arc has a
higher surface brightness, particularly near the NW end. The two
arcs come close to merging on the west side, but the eastern side
appears open yielding a horseshoe appearance.
17.5" (8/21/98): this object, which is one of my favorites, was
striking at the Sierra Buttes. This huge annular planetary (nearly 5'
diameter) is dominated by two relatively narrow bright arcs in the
rim along the NNW and SSE sides which are faintly attached along the
west side. The center is quite dark and appears open on the E side
giving an unusual horseshoe or "C" shape.
17.5" (8/10/91): 100x with OIII filter; moderately bright, very
large, about 5' diameter. This huge annular planetary has a
distinctive "C" shape open at the E end with a very dark center.
There are two narrow bright arcs in the rim along the NNW and SSE
sides. The brightest and widest arc is along the NNW end. The two
arcs are faintly connected along the western edge. Impressive object
in dark skies using OIII filter although also dimly seen unfiltered.
17.5" (8/13/88): Impressive huge annulus at 62x using an OIII
filter. Bright knots are prominent at the NNW and SSE ends, dims
along the E side.
17.5" (9/14/85): marginal object without a filter, but using the OIII
filter transforms into a huge annular planetary with two brighter
sections to the rim.
13" (8/11/85): 62x with OIII filter; faint, very large, clearly
annular. Contains brighter arcs along the N and S part of rim which
is dim along the E edge.
Steve
-- What TAC Is About. http://www.observers.org/Join.shtml Webcam, DSLR, CCD Imaging use NorCal AI. http://tech.groups.yahoo.com/group/norcal_ai/ Designing and improving TAC's website. http://tech.groups.yahoo.com/group/tac-ops/ Sub-scribe or Unsub-scribe from TAC http://seds.org/mailman/listinfo/sf-bay-tacReceived on Tue Nov 28 12:58:52 2006