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Science Forum Index » Astro - Amateur Forum » RA/Dec for center of the Milky Way...
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| George Orwell... |
 Posted: Wed May 14, 2008 12:02 pm |
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Can someone provide me with the RA and Dec for the center of the Milky Way?
Thanks.
Il mittente di questo messaggio|The sender address of this
non corrisponde ad un utente |message is not related to a real
reale ma all'indirizzo fittizio|person but to a fake address of an
di un sistema anonimizzatore |anonymous system
Per maggiori informazioni |For more info
https://www.mixmaster.it |
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| Chris L Peterson... |
| Posted: Wed May 14, 2008 6:14 pm |
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On Thu, 15 May 2008 00:02:01 +0200 (CEST), George Orwell
<nobody at (no spam) mixmaster.it> wrote:
Quote: Can someone provide me with the RA and Dec for the center of the Milky Way?
It's in Sagittarius. 266.4 degrees RA (17h 46m), -29.01 degrees
declination.
_________________________________________________
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com
** Posted from http://www.teranews.com ** |
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| oriel36... |
| Posted: Tue May 20, 2008 8:39 am |
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On May 15, 1:14 am, Chris L Peterson <c... at (no spam) alumni.caltech.edu> wrote:
Quote: On Thu, 15 May 2008 00:02:01 +0200 (CEST), George Orwell
nob... at (no spam) mixmaster.it> wrote:
Can someone provide me with the RA and Dec for the center of the Milky Way?
It's in Sagittarius. 266.4 degrees RA (17h 46m), -29.01 degrees
declination.
_________________________________________________
Chris L Peterson
Cloudbait Observatoryhttp://www.cloudbait.com
** Posted fromhttp://www.teranews.com**
You are using constellational/celestial sphere geometry to designate a
structural astronomical feature,it is like looking through a
astrological bubble and locating the galactic center against that
hideous spherical geometry -
http://www.opencourse.info/astronomy/introduction/02.motion_stars_sun/celestial_sphere_anim.gif
http://www.pfm.howard.edu/astronomy/Chaisson/AT401/IMAGES/AACHCIT0.JPG
http://www.pfm.howard.edu/astronomy/Chaisson/AT401/HTML/AT40103.htm
I do not mind you,you are an empiricist and hardly know what this Ra/
Dec 'sidereal time' type of nonsense is hindering however there has to
be at least a few genuine astronomers who recognise that the orbital
motion of the Earth has a 360 degree orbital component rather that a
variable axial tilt.
There is no harm in explaining that the Hemispheres are pointing
towards and away from the Sun however the cause is not because of a
'tilting' action but because there is a seperate motion involved to
axial rotation and rotational orientation.Good kids do not stand a
chance of appreciating the new way of looking at the seasons from an
astronomical perspective when there are still those who cannot think
beyond their sub-geocentric celestial sphere bubble.
Again,you are as intellectually harmless as Min and Ed Conrad with
your astrological perspective but why so many of you ?. |
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| Greg Hennessy... |
| Posted: Tue May 20, 2008 4:13 pm |
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Quote: It's in Sagittarius. 266.4 degrees RA (17h 46m), -29.01 degrees
declination.
You are using constellational/celestial sphere geometry to designate a
structural astronomical feature,
If you prefer, we could give its coordinate as l=0, b=0. Does that
make you happier? |
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| Chris L Peterson... |
| Posted: Tue May 20, 2008 4:58 pm |
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On Tue, 20 May 2008 11:39:03 -0700 (PDT), oriel36
<kelleher.gerald at (no spam) gmail.com> wrote:
Quote: I do not mind you,you are an empiricist and hardly know what this Ra/
Dec 'sidereal time' type of nonsense is hindering...
Just out of curiosity, given the OP's interest in generally locating the
area of the sky where the galactic center could be found, what units
would you use to answer the question?
_________________________________________________
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com
** Posted from http://www.teranews.com ** |
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| Greg Crinklaw... |
| Posted: Tue May 20, 2008 5:51 pm |
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Chris L Peterson wrote:
Quote: On Tue, 20 May 2008 11:39:03 -0700 (PDT), oriel36
kelleher.gerald at (no spam) gmail.com> wrote:
I do not mind you,you are an empiricist and hardly know what this Ra/
Dec 'sidereal time' type of nonsense is hindering...
Just out of curiosity, given the OP's interest in generally locating the
area of the sky where the galactic center could be found, what units
would you use to answer the question?
LOL! Now that would be a response I'd like to read, assuming he didn't
just ignore your question in favor of another regurgitation of his
nonsense. But of course that would be expecting too much. Ultimately
that's why what these crackpots have to say is so uninteresting. They
are, after all, crackpots.
--
Greg Crinklaw
Astronomical Software Developer
Cloudcroft, New Mexico, USA (33N, 106W, 2700m)
SkyTools: http://www.skyhound.com/cs.html
Observing: http://www.skyhound.com/sh/skyhound.html
Comets: http://comets.skyhound.com
To reply take out your eye |
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| oriel36... |
| Posted: Tue May 20, 2008 6:17 pm |
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On May 20, 11:58 pm, Chris L Peterson <c... at (no spam) alumni.caltech.edu> wrote:
Quote: On Tue, 20 May 2008 11:39:03 -0700 (PDT), oriel36
kelleher.ger... at (no spam) gmail.com> wrote:
I do not mind you,you are an empiricist and hardly know what this Ra/
Dec 'sidereal time' type of nonsense is hindering...
Just out of curiosity, given the OP's interest in generally locating the
area of the sky where the galactic center could be found, what units
would you use to answer the question?
_________________________________________________
Chris L Peterson
Cloudbait Observatoryhttp://www.cloudbait.com
** Posted fromhttp://www.teranews.com**
The Ra/Dec system is fine as an observational convenience but
unfortunately that calendrically based system is used to justify axial
and orbital motion hence the inability to correctly identify the
correct means to explain seasonal variations and the variations in the
natural noon cycles.
Point of fact,nobody bothered to ask the simple question of whether a
location ,apart from axial rotation,keeps the same face to the Sun
over the course of an annual orbit or changes it through 360 degrees
with respect to the central Sun.You have you answer with the
spectacular time lapse footage of Uranus -
http://hubblesite.org/newscenter/archive/releases/1999/11/video/b/
You probably heard quite a bit about climate over the past few years
and many of the grave predictions promoted by scientists but I can
point out that when faced with a better way to approach the
explanation for the seasons using an additional component that can
actually be seen.I repeat,can actually be seen,they simply refuse to
acknowledge it.There is a 360 degree oirbital change over the course
of an annual orbit,it is a 100% certainty yet variable axial
inclination is still used.
What is going through your head when you see the Equatorial rings
change through about 17 degrees to the central Sun when you know that
the rotational orientation of Uranus keeps pointing in the same
direction in space just as the Earth's rotation orientation
does ?.Regardless of the 'axial tilt',be it that of the Earth or
Uranus,a location must turn 360 degrees to the central Sun and take an
entire orbit to achieve this orbital component.
This is not just serious astronomical material,it is also enjoyable
and if you can't apply either sentiment to the new way of approaching
the seasons via an astronomical explanation then stick with
constellational observing.What can be fairer than that ?. |
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| Chris L Peterson... |
| Posted: Tue May 20, 2008 11:55 pm |
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On Tue, 20 May 2008 21:17:33 -0700 (PDT), oriel36
<kelleher.gerald at (no spam) gmail.com> wrote:
Quote: The Ra/Dec system is fine as an observational convenience...
Thank you for that <g>. Indeed, the OP was asking for an "observational
convenience".
_________________________________________________
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com
** Posted from http://www.teranews.com ** |
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| oriel36... |
| Posted: Wed May 21, 2008 7:54 am |
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On May 21, 6:55 am, Chris L Peterson <c... at (no spam) alumni.caltech.edu> wrote:
Quote: On Tue, 20 May 2008 21:17:33 -0700 (PDT), oriel36
kelleher.ger... at (no spam) gmail.com> wrote:
The Ra/Dec system is fine as an observational convenience...
Thank you for that <g>. Indeed, the OP was asking for an "observational
convenience".
_________________________________________________
Chris L Peterson
Cloudbait Observatoryhttp://www.cloudbait.com
** Posted fromhttp://www.teranews.com**
You do not appear to acknowledge the limitations of the Ra/Dec
observational convenience (no need to put it within quotes) and
especially where orbital motion is concerned .
The motion of the Equatorial ring of Uranus is really the first
isolated and visual affirmation of Keplerian orbital motion from an
individual planetary perspective )insofar as the change in the
orientation of the rings with respect to the central Sun occurs in an
uneven manner changing faster at the perihelion and slower at the
aphelion -
http://hubblesite.org/newscenter/archive/releases/1999/11/video/b/
When applied to the Earth,that motion alied with axial rotation and
using natural noon as a benchmark explains why the Equation of Time is
needed to equalise the natural noon cycle to the 24 hour cycle.
There you go Chris,you have the entire summer to explain what
actually causes seasonal variations using the motions and
orientations of the Earth - structural astronomy in other words.Maybe
you want to taunt whoever is left in SAA but increasingly you are
taking on the same astrological mantle as Min with your loving
adherence to the observational Ra/Dec convenience. |
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