From: "milton_aupperle" <milton@outcastsoft.com>
Date: March 9, 2010 7:46:04 PM MST
To: Astro_IIDC@yahoogroups.com
Subject: Re: Leo Galaxy NGC 2903
Hi Mark;
Thanks for the ID on UGC 5086 (or PGC 27115) near NGC 2903. Not much details on it if you search online, other than it's really faint (about Mag 15.7).
The one for M53 doesn't appear to show up in your snapshot. I marked the faint fuzzy I noticed here:
http://groups.yahoo.com/group/Astro_IIDC/files/Other/M53_Marked.jpg
as "Unknown".
You do have one showing near it, but it's below the one I was interested in and appears to be the one I marked as "Yours".
Yahoo reduces the size of all photos, so I can't identify the number in your screen snap shot.
Thanks for your help..
Milton Aupperle
--- In Astro_IIDC@yahoogroups.com, Mark Gaffney <markgaffney@...> wrote:
Hi Milton,
Both Voyager (which I now have the full version of-since earlier in
the year) & ST3 Pro appear to list that fuzzy in the NGC 2903 image as
UGC 5086 or PGC 27115. There is an object shown closer still to NGC
2903 though. I`m not sure exactly what you`re speaking about in the M
53 image but I`ll post a couple of snapshots from Voyager to
Photos..There are a number of objects around M 53, one quite close...
http://groups.yahoo.com/group/Astro_IIDC/photos/album/1710518579/pic/list
HTH.. Mark.
On 10/03/2010, at 10:27 AM, milton_aupperle wrote:
Hi Folks;
Here is Leo Galaxy NGC 2903
http://groups.yahoo.com/group/Astro_IIDC/files/DSO/NGC2903_MJA_20100305.jpg
taken on March 5th. I managed to catch the faint sweeping arms and a
weak companion galaxy (well it might be a companion, or it could be
just a faint background galaxy too). I haven't been able to find out
what it is for a designation yet.
C8 @ 1150 mm, Grasshopper, six 1x1 15 min luma frames, 3 each binned
2x2 of 6 m red, 4 min green and 3 min blue with Astrodon filters.
Even with a Hutech IDAS LPR filter and my sky background is 16,000
ADU. Seeing was not really good during this period, about +/- 5 arc
seconds. It was better for the Eskimo nebula and then better again
for M64.
I discovered my mount is now very slightly out of polar alignment,
so I had some field rotation issues to deal with for processing. One
leg of the tripod is out on a piece of brick resting on the dirt/
grass, so that I can view a bit higher up (80+°). The back two legs
are on the concrete patio:
http://www.outcastsoft.com/AstroImages/Scope02.jpg
Apparently when the snow melted the ground shifted a small amount
and threw things off. It's only a + 0.2° rotation over 105 minutes,
but that shifts about 6 pixels and causes a major headache for doing
the LRGB aligns. That's also why stars on the left side are more
elongate than the right side are.
PS: There is also a small "faint fuzzy" in the M53 image I posted
yesterday south of the Globular Cluster. I have not found any info
on it, but have seen it in other older (2002) amateur images so it's
not something new. I'll have to re-shoot with 15 to 20 minute
exposure to see what it is.
TTYL..
Milton Aupperle