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scopethis
professor emeritus
Reged: 05/30/08
Posts: 636
Loc: Kingman, Ks
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The reason I brought up NGC 6765 is that Sue French (in her S&T July 2009 column) said she saw the object with a 105mm refractor. So I figured that it would be a fairly easy planetary with my 10" SCT. Not so--it was dim and difficult for me. Guess that proves my old eyes are no match for youthful vision. And Jorgen, thanks for the info on this object.
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sgottlieb
sage
Reged: 07/22/07
Posts: 339
Loc: SF Bay area
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Here are my notes on NGC 6765 from a couple of years back (July '07) with my 18-inch from the Sierras --
This unusual planetary was picked up at 174x unfiltered as an elongated glow. The view is confused, though, as a star or knot in directly involved at the NE end along with 1 or 2 additional stars around the edges. Excellent contrast gain with an OIII filter as the edges sharpened up and the halo appeared elongated 2:1 SW-NE, ~0.6'x0.3'. At 225x, a mag 14-15 star is just off the NE end and the involved knot seemed to occasionally resolve into a couple of faint stars just north of center near the NE edge. Finally, an extremely faint star occasionally sparkled at the SW end.
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But back in '99, I commented about an uneven surface brightness. I'm not sure why I didn't notice this in the more recent observation.
Picked up at 100x as a small, irregular glow in a rich star field by moving 20' NW of Struve 2483 = 7.9/9.0 at 10". At 220x, the PN is clearly elongated ~2:1 SW-NE. The appearance is odd with a much brighter NE end and a fainter extension to the SW end. A mag 14.5-15 star is just off the NE end in the direction of the elongation. At 380x, a very faint star was intermittently glimpsed within the NE end. If this is the central star it is very eccentrically placed.
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Steve Gottlieb
18" f/4.3 Starmaster
Adventures In Deep Space
7500+ NGC/IC Visual Descriptions
NGC/IC Project
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Alpha Orionis
super member
Reged: 06/04/09
Posts: 103
Loc: Salt Lake City, Utah
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wow, NGC 6765! its a hard to observe nebula, especially under bright skies.
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Astronomical Observation Equipment:
Zhumell Z12 Deluxe
Celestron Powerseeker 127EQ
10x50 Bushnell Binos
A good Pair of eyes
Home Observation site:
Salt Lake City
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azure1961p
professor emeritus
Reged: 01/17/09
Posts: 731
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Your buddy who doesnt find reward in planeteries made me chuckle some. Aesthetically they are often more of an eye candy thing than a lot of galaxies near the same size. You dont get the same wonderment of the realization of what a galaxy is and that you're beholding it and such, but as a stellar phenomenon, they're really all that.
My "wonderment" is often about how it would be to be just off the edge of a planetery. Take NGC6210 - thats a lot of glow in a relatively confined space. Too be just off of this glowing shell, or within it even. Wow - what'd that be like?
Planeteries pay big rewards on nights when the air is dry, transparent and still. Circumstances that often dont coexist.
Pete
7008 is interesting in that for a faint planetary, its actually got some nice detail!
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