[AZ-Observing] Re: M101 for the month of May
- From: "Jimmy Ray" <jimmy_ray@xxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Thu, 24 May 2007 19:49:52 -0700
Hi Chris,
A great shot! I have it up as my desktop picture so I can admire it for
awhile.
Now for the questions borne of Novice ignorance and curiousity. On your
website there are a couple of statements that I'm pondering over:
"its inclination is less than 1 degree and is face on to our line of sight."
How is this actually calculated and/or figured out? Do all spiral galaxies
have a certain degree of "roundness" so any amount of "obliqueness" can be
corrolated into degrees of "tilt" or other?
"Hordes of faint background galaxies dot this image, most being a leaden
yellow color, dimmed from their great distance through intergalactic dust."
Is this dust causing the "yellowing" galactic or interstellar dust
collecting around the galaxy itself in the plane of or within the
gravitational field of that galaxy? Or an unrelated dark nebula somewhere
between here and there? And / or is this caused because of the general
"dustiness" of the Universe?
Jimmy Ray
----- Original Message -----
From: "Chris Schur" <comets133@xxxxxxxxx>
To: "Rik Hill" <rhill24@xxxxxxx>; "Az-Observing List"
<az-observing@xxxxxxxxxxxxx>; "Mike Bakich Astronomy"
<mbakich@xxxxxxxxxxxxx>; "Adam Block" <ngc1535@xxxxxxxxxxxxxxxxxxxxx>; "Bob
Erdmann" <boberdmann@xxxxxxxxxxxx>; "Chuck Burton"
<cburton@xxxxxxxxxxxxxxxxxxxxx>; "Fraser Cain" <info@xxxxxxxxxxxxxxxxx>;
"Dominic Cantin" <dominiccantin@xxxxxxxx>; "Steve Coe" <stevecoe@xxxxxxxxx>;
"EVAC list" <evac@xxxxxxxxxxxxxxxxxxxxxxx>; "Jerry Bonnell APOD)"
<bonnell@xxxxxxxxxxxxxxxxxxxx>; "Albert Levy" <alevy1@xxxxxxxxxx>; "mark"
<dicroidium@xxxxxxxxxxx>; "Thelma/John Ofarrell" <thelmaann@xxxxxxx>; "Tony
Phillips" <webmaster@xxxxxxxxxxxxxxxx>; "ARTHUR PICCINATI"
<apiccinati@xxxxxxxxx>; "Randy Peterson" <rgpeterson@xxxxxxx>; "Rick
Rotramel AZ77)" <rick.rotramel@xxxxxxxxxxxxx>; "Robert Nemiroff APOD"
<nemiroff@xxxxxxx>; "S&T Gallery" <gallery@xxxxxxxxxxxxxxxxxxx>; "Arlene
Schur" <2arlene@xxxxxxxxxxxxx>; "Dawn Schur" <dschur@xxxxxxxxxxxxxx>; "Lon
Shelton" <bitsylon@xxxxxxxxx>; "Paul Tierney" <palaeopaul@xxxxxxxxxxx>;
"Vince" <ne7y@xxxxxxx>; "Peter Wehinger" <pwehinger@xxxxxxxxxxxxxx>
Sent: Thursday, May 24, 2007 11:56
Subject: [AZ-Observing] M101 for the month of May
HI all,
It took all month to image this one, due to clouds,
wind, and giving it lots of exposure time. Anyway, I
think youll like the lastest image of the Pinwheel
galaxy with our newer ST10xme camera. It does 10x
better job on galaxies than the older ST8i with the
same setup and exposures!
http://www.schursastrophotography.com/ccdimagepages/m101-3.html
Comments?
Chris
Take Care,
Chris
Astro: http://www.schursastrophotography.com
Robotics: http://www.schursastrophotography.com/roboticsmain.html
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