ASTRO: IC 348 & Vicinity

Thanks, Larry!



Jon Christensen

"LA" wrote in message
news:YPbih.3908$4Q6.3449@trnddc06...
A completely awesome shot Jon. Clear Skyz, LA


"Jon Christensen" wrote in message
...
I saw this area in a photo I took last year with a camera lense of comet
Machholz.

I've been wanting to explore it in more detail ever since with a
telescope.

Larger sizes and image details are here on my webite:

http://www.christensenastroimages.com/nebula/ic348.htm


Jon Christensen

Thanks, Doug. It's always fun to explore new places with the telescope.


Jon Christensen

"Doug W." wrote in message
. ..
Saw this one on SBIG Jon. Excellent processing. It's a neat area.

--
Regards, Doug W.
www.photonsfate.com
--

Thanks, George. It's a very interesting observation you make about IC 1985.
A look at 'The Sky' software shows IC 348 and IC 1985 to be the same object.
Perhaps an error in the software or an error in the IC catalogue.

Jon Christensen

"George Normandin" wrote in message
...
"Jon Christensen" wrote
...
I saw this area in a photo I took last year with a camera lense of comet
Machholz.

I've been wanting to explore it in more detail ever since with a
telescope.

Larger sizes and image details are here on my webite:

http://www.christensenastroimages.com/nebula/ic348.htm


Beautiful image Jon. Love the color and detail.

Is the brightest patch of nebulosity IC 1985?

George N

"Jon Christensen" wrote
....

Thanks, George. It's a very interesting observation you make about IC
1985. A look at 'The Sky' software shows IC 348 and IC 1985 to be the same
object. Perhaps an error in the software or an error in the IC catalogue.


Jon,

Here's the "notes" on "IC problems" from the NGC/IC Project website that
cover IC 348 - IC 1985, which are the same object:


-----------------------------
IC 348 = IC 1985. Dreyer put this into the first IC apparently
without seeing Safford's footnote which reads, "A loose cluster with
nebula."
All that appears in the IC description is Safford's "vL, vgbM, pB"
rearranged
into the usual brightness-size-concentration order.

Whatever happened, Safford is right -- there is a cluster associated with
this
nebulosity. Barnard did not mention the cluster, either, in his discovery
note for IC 1985, though he examined the object both photographically and
visually with the Yerkes 40-inch.
-----------------------------
IC 1985 = IC 348. Barnard did not check the first IC before he published
this as a new nebula at the end of his paper on the "Exterior Nebulosities
of
the Pleiades." Dreyer apparently did not, either, so the object now has two
IC numbers. See IC 348 for more.

The nebulosity that caught Barnard's eye on a photograph of the Pleiades
also
contains a cluster, though the cluster is not visible on either of Barnard's
photographs in his Lick Publications, Vol. 11. (Safford actually did see
the
cluster, though Dreyer did not put that into the description for IC 348.)

Barnard adopted the BD position for the central star in the nebula.
-----------------

George N