Quote:
Originally Posted by astroron
Several weeks ago, during a DSS survey of the outer Milky Way in Sagittarius, I came across a new and bright (!) obvious planetary nebula candidate in the vicinity of Barnard's Galaxy NGC 6822 which may be of interest for some of the PN folks here on amastro.
Coordinates of the candidate are 19 37 43.77 -13 51 20, size is approx.
0.7'x0.45'. The appearance of the nebula on the (blue) DSS-I image suggests a mild bipolar morphology; the red DSS-II image shows also a central star candidate immediately N of a superimposed star. Nothing in SIMBAD or NED at this position. VIZIER shows a double entry of the object in the LEDA catalogue of Paturel et al. (LEDA 932285 and LEDA 932333) but the object is clearly a line emitter and not a pair of (interacting) galaxies. There is no IRAS or radio source present at this position, which is probably one of the reasons why the object has remained unnoticed until now. The PN candidate is only 1.5 degrees distant from NGC 6818 (2 degrees from NGC 6822) and easily found 6' N of the 7 mag star SAO 162831.
I managed to observe the object last week with my new 15" under good
transparency (ZLM ~ 6m,8 - 7m,0). Even without filter a very faint glow appeared at the position of the PN candidate. An OIII filter boosted the visibility of the object considerably and showed it as a roundish glow with approx. 20" size that could be held easily with averted vision. I also tried to see the two lobes individually but failed to do so, probably due the lack of contrast and the faintness of the object. The total brightness of the object I estimate to be ~15 mag, so it should be possible seeing it with apertures of 12" or even less.
Clear skies!
Matthias
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Ron, these are actually the words of Matthias Kronberger, as it appeared at the amastro site. You should have quoted this as " ", as it reads as if it were your own words. (If it were you should have paraphrased it.) I.e.
"Several weeks ago, during a DSS survey of the outer Milky Way in Sagittarius, I came across a new and bright (!) obvious planetary nebula candidate in the vicinity of Barnard's Galaxy NGC 6822 which may be of interest for some of the PN folks here on amastro.
Coordinates of the candidate are 19 37 43.77 -13 51 20, size is approx.
0.7'x0.45'. The appearance of the nebula on the (blue) DSS-I image suggests a mild bipolar morphology; the red DSS-II image shows also a central star candidate immediately N of a superimposed star. Nothing in SIMBAD or NED at this position. VIZIER shows a double entry of the object in the LEDA catalogue of Paturel et al. (LEDA 932285 and LEDA 932333) but the object is clearly a line emitter and not a pair of (interacting) galaxies. There is no IRAS or radio source present at this position, which is probably one of the reasons why the object has remained unnoticed until now. The PN candidate is only 1.5 degrees distant from NGC 6818 (2 degrees from NGC 6822) and easily found 6' N of the 7 mag star SAO 162831.
I managed to observe the object last week with my new 15" under good
transparency (ZLM ~ 6m,8 - 7m,0). Even without filter a very faint glow appeared at the position of the PN candidate. An OIII filter boosted the visibility of the object considerably and showed it as a roundish glow with approx. 20" size that could be held easily with averted vision. I also tried to see the two lobes individually but failed to do so, probably due the lack of contrast and the faintness of the object. The total brightness of the object I estimate to be ~15 mag, so it should be possible seeing it with apertures of 12" or even less."
For clarity, also the general title here "
New Planetary Nebula Found" is slightly incorrect, as no one has determined what it actually is. It would be better if it read some thing like "
New Planetary Nebula Candidate Found."
Also Steve Gottlieb has observed this object in a 22-inch on 25th July. He visually finds "
The overall size seemed roughly 20"x15". This is much smaller than the object imaged here.*
Again, thanks for the update here.