New Bubble Nebula found in Cygnus as PN G075.5+01.7 Announced by IAU
Found this today and thought it was interesting since I adore Planetary Nebulas. Actually it is 2 year old information that finally was announced as new today. Brian Skiff at Lowell shared this in an email message to a group I belong to over at Yahoo: "This object, which seems to have been known for some time, was announced today on 'Central Bureau Electronic Circular' 1876. Discovery details, both via narrowband H-alpha images, are shown here: http://tinyurl. com/ku4ppy http://www.lostvall eyobservatory. com/page29cresce ntbubblenb/ So far as I know there is no spectrum, but prompted by a request from elsewhere, I did independently identify what is almost certainly the very blue mag 19 central star, which is GSC2.3 N334040039 at: 20 15 21.50 +38 02 43.4 (J2000). The images look like a remarkably undisturbed thin spherical shell, making a narrow-ringed PN. The implication is that this must be very much in the foreground of the very busy Cygnus starfield. If the mag 19 central star is an ordinary white dwarf of absolute magnitude 12 or so, then the nebula is only ~250 pc away. Though it would be very difficult to observe, this modest distance puts in within reach of current parallax techniques, such as at USNO-Flagstaff or with the HST fine-guidance sensors. The surface brightness is very low, and the nebula is barely present on the POSS-I and -II red plates." Hope it was ok to share that. I find the images on all the links to be enjoyable as a way to increase my understanding of how this object was investigated and explore how this was discovered and the processes surrounding its discovery. I promise to quit posting so much now as I am returning to health, observing again, and no longer bored.
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Jay Eads