A Space & astronomy forum. SpaceBanter.com

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics » Amateur Astronomy
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Observed path of the Sun



 
 
Thread Tools Display Modes
  #1  
Old September 23rd 17, 08:54 AM posted to sci.astro.amateur
Gerald Kelleher
external usenet poster
 
Posts: 1,551
Default Observed path of the Sun

https://www.esrl.noaa.gov/gmd/grad/solcalc/fig5_0n.gif

Many descriptions of the annual path of the Sun at the Equator in context of the Solstices/Equinoxes included that awful perspective. A reasonable person would immediately recognize that an observer at the Equator can't distinguish between winter/summer as they exist at a latitude which divides the hemispheres.

https://www.timeanddate.com/sun/equa...-guinea/malabo

It is also a perspective which plagues all other descriptions. A person at the Equator turns at a rate of 1037.5 miles per hour so when they exit the circle of illumination (sunrise) until they re-enter the circle of illumination (sunset) 12 hours later the observer has covered 12,450 miles across the fully illuminated face of the Earth.As there is no meaningful daylight/darkness asymmetry at the Equator, the graphic and the explanations of the North/South path of the Sun are rubbish and disruptive for the technical details of the Earth's motions.



  #2  
Old September 24th 17, 07:35 AM posted to sci.astro.amateur
Gerald Kelleher
external usenet poster
 
Posts: 1,551
Default Observed path of the Sun

There are many of the same false graphics out there so no wonder the Caltech students here never stood a chance -

http://www.cso.caltech.edu/outreach/...DAY/bsfig7.jpg

How an observer at the Equator decides whether it is the winter or summer Solstice by the position of the Sun given that they straddle the hemispheres and when it is the winter solstice in the Northern hemisphere or summer solstice in the Southern, they both happen at the same time. This is, of course, all nonsense but obviously whatever it takes to justify celestial sphere observing.

The safe cloudy nights forum caters for the limited version of astronomy, an astronomy that never broaches cause and effect with terrestrial sciences since they tried to bypass the central Sun for the motions of the Earth and appealed to circumpolar motion of everything, including the Sun in RA/Dec -

http://archive.hokulea.com/images/na...r/ecliptic.gif

Again, I understand many are a product of their instruction as students and would not dare question the validity of their certificates and degrees but such is the paper thin difference between genuine astronomy with all its causes and effects and celestial sphere rubbish.

  #3  
Old September 24th 17, 05:43 PM posted to sci.astro.amateur
Gerald Kelleher
external usenet poster
 
Posts: 1,551
Default Observed path of the Sun

The heart does sink sometimes despite seeing the way through all this to the eventual recovery of astronomy. The rise of celestial sphere software was indeed rapid as were descriptions based on that clockwork generated and homocentric view -

https://www.esrl.noaa.gov/gmd/grad/s...solarpaths.gif

Basically borrowing from the tropic of Cancer/Capricorn and split by the Equator, it escaped into the celestial arena where they even pivot the circle of illumination to suit the Sun over the latitudinal points -

https://apod.nasa.gov/apod/ap170319.html

Somebody else must feel something when confronted with such childish notions that were allowed to fester, even in the lifetime of this newsgroup. So where to now ?.
  #4  
Old September 25th 17, 02:20 AM posted to sci.astro.amateur
palsing[_2_]
external usenet poster
 
Posts: 3,068
Default Observed path of the Sun

On Sunday, September 24, 2017 at 9:43:12 AM UTC-7, Gerald Kelleher wrote:
The heart does sink sometimes despite seeing the way through all this to the eventual recovery of astronomy. The rise of celestial sphere software was indeed rapid as were descriptions based on that clockwork generated and homocentric view -

https://www.esrl.noaa.gov/gmd/grad/s...solarpaths.gif


Gerald, if you do not understand this extremely basic and easy-to-understand graphic then you have no business lecturing people about the dynamics of the Earth and Sun. This is drop-dead first-thing-you-learn in grammar school stuff...
  #5  
Old September 25th 17, 06:27 AM posted to sci.astro.amateur
Chris.B[_3_]
external usenet poster
 
Posts: 1,001
Default Observed path of the Sun

On Monday, 25 September 2017 03:20:53 UTC+2, palsing wrote:

Gerald, if you do not understand this extremely basic and easy-to-understand graphic then you have no business lecturing people about the dynamics of the Earth and Sun. This is drop-dead first-thing-you-learn in grammar school stuff...


Or, "Trolling for Duh-dummies." By A.Moron.

Pt.1, Page 1, Paragraph 1.

"First baby steps in trolling."

"Post something deliberately stupid and then defend it as if it's real."

"Guaranteed results! Works every time!"
"The pedants will flock to your posts."
"More fun than YouTube [fraudulent advertising] click-bait."

  #6  
Old September 25th 17, 07:13 AM posted to sci.astro.amateur
Gerald Kelleher
external usenet poster
 
Posts: 1,551
Default Observed path of the Sun

On Monday, September 25, 2017 at 2:20:53 AM UTC+1, palsing wrote:
On Sunday, September 24, 2017 at 9:43:12 AM UTC-7, Gerald Kelleher wrote:
The heart does sink sometimes despite seeing the way through all this to the eventual recovery of astronomy. The rise of celestial sphere software was indeed rapid as were descriptions based on that clockwork generated and homocentric view -

https://www.esrl.noaa.gov/gmd/grad/s...solarpaths.gif


Gerald, if you do not understand this extremely basic and easy-to-understand graphic then you have no business lecturing people about the dynamics of the Earth and Sun. This is drop-dead first-thing-you-learn in grammar school stuff...


Like everything else, the graphic is a fraud as are the people who promote it, a notion so abhorrent to reason that it takes really damaged individuals to go along with it -

https://apod.nasa.gov/apod/ap170319.html

I take pride in human reasoning but that, that represents something which would break a person's heart as it turns the RA/Dec version of the motion of the Sun into reality. To manipulate imaging in order to promote a pivoting circle of illumination is criminal and especially as it is done through the space agency.

As for you Paul, you feel nothing and that has been your problem all along.
  #7  
Old September 25th 17, 11:40 AM posted to sci.astro.amateur
[email protected]
external usenet poster
 
Posts: 306
Default Observed path of the Sun

On Monday, September 25, 2017 at 7:13:51 AM UTC+1, Gerald Kelleher wrote:

https://apod.nasa.gov/apod/ap170319.html
To manipulate imaging in order to promote a pivoting circle of illumination is criminal and especially as it is done through the space agency.


You can see Eastern Africa throughout, they are simply keeping North at the top of each image, which is not "manipulating" anything.

Indeed, if they kept the circle of illumination horizontal, do you know what the sequence would show?

The North Pole tilting! Ha ha!
  #8  
Old September 25th 17, 12:49 PM posted to sci.astro.amateur
Gerald Kelleher
external usenet poster
 
Posts: 1,551
Default Observed path of the Sun

https://apod.nasa.gov/apod/ap170319.html

That is out and out fraud but other than it is generated from a celestial sphere ideology there isn't much more that can be said other than it takes a damaged mind not to be sick from the assault on the eyes and mind.

  #9  
Old September 25th 17, 03:50 PM posted to sci.astro.amateur
[email protected]
external usenet poster
 
Posts: 306
Default Observed path of the Sun

On Monday, September 25, 2017 at 12:49:59 PM UTC+1, Gerald Kelleher wrote:
https://apod.nasa.gov/apod/ap170319.html

That is out and out fraud but other than it is generated from a celestial sphere ideology there isn't much more that can be said other than it takes a damaged mind not to be sick from the assault on the eyes and mind.


It is not generated from a celestial sphere ideology, it is generated by a camera on a satellite in geostationary orbit above Africa.

You would see the very same thing with your own two eyes if you were up there.
  #10  
Old September 25th 17, 03:53 PM posted to sci.astro.amateur
Quadibloc
external usenet poster
 
Posts: 7,018
Default Observed path of the Sun

On Monday, September 25, 2017 at 5:49:59 AM UTC-6, Gerald Kelleher wrote:
https://apod.nasa.gov/apod/ap170319.html


That is out and out fraud


Well, it's true that they only took one frame per day, so it's always the same
time of day in Africa even though the movie shows a major part of a year.

So one has to understand that it eliminated the rotation of the Earth in order to
illustrate its point about the consequences of the Earth's orbital motion.

John Savard
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Observed retrogrades oriel36[_2_] Amateur Astronomy 8 January 27th 13 02:48 PM
help me identify what I observed Andrew Woodward UK Astronomy 6 November 1st 11 11:39 AM
Has Anybody Observed: Dennis Woos Amateur Astronomy 4 September 6th 07 05:16 AM
Venus Observed Robert Sheaffer Amateur Astronomy 5 January 10th 06 08:59 PM
Second contact observed... Stephen Tonkin Amateur Astronomy 3 June 8th 04 08:56 PM


All times are GMT +1. The time now is 04:28 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 SpaceBanter.com.
The comments are property of their posters.