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The awful pivot



 
 
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  #1  
Old September 18th 18, 07:30 PM posted to sci.astro.amateur
Gerald Kelleher
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Default The awful pivot

It is now showing up everywhere with a NASA imprimatur demonstrating the damage image manipulation can do -

https://www.treehugger.com/natural-s...-equinox..html

https://www.mypalmbeachpost.com/weat...Jy482Kxhpqr5M/

That is a product of RA/Dec modelers as the original Sun centered astronomers used the motion of the Sun directly through the Zodiac whereas those who used the Equatorial Coordinate System have the Sun bounce up and down annually against the Earth's rotational equator projected into the solar system..

So, in an neighbourhood where the moon's circle of illumination runs parallel with the Earth's, the main organisation responsible for space travel chooses to project a pivoting circle of illumination off the Equator on a planet with a zero degree inclination.

People must have no shame nor intellect but what is the wider world supposed to do when the information is coming from the large organisation tasked with investigating space for students.



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  #2  
Old September 20th 18, 09:27 AM posted to sci.astro.amateur
Gerald Kelleher
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Default The awful pivot

May as well highlight the awful price of the solar vs sidereal fiction in the heads of those who seem to despise astronomy and each other.

There is no separate rotation to the Sun as opposed to a celestial sphere of stars (solar vs sidereal) as sanity and common sense should intervene and acknowledge the Sun coming into view followed by the stars as a single seamless rotation creating the day/night cycle.

There is, however, a second day/night cycle ( Polar) where the Sun comes into view at the North/South Poles with a sunrise on the Equinox followed by the stars after the opposite Equinox. There is a separate rotation creating this spectacle as the planet turns unevenly to the orbital plane and, in combination with daily rotation, is observed as the variation in the noon cycle.

Since remote antiquity, humanity has marked the Sun coming into view at dawn and at sunset on the Equinox as the great stone monuments built bu communities capture the event -

https://www.knowth.com/loughcrew-equinox.htm

Here we are in the 21st century with imaging of Polar sunrise and nobody wants to know about the planet's two distinct day/night cycles.

https://www.timeanddate.com/sun/antarctica/south-pole

https://www.youtube.com/watch?v=okw6Mu3mxdM


I can excuse the zombie intellects of those who have their own thing going but surely that condition can't be entirely prevalent unless people are afraid of being bullied as it appears happened recently.




  #3  
Old September 20th 18, 08:03 PM posted to sci.astro.amateur
Gerald Kelleher
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Posts: 1,382
Default The awful pivot

The pivoting circle of illumination off the Equator on an Earth with a zero inclination was something I first saw in Wikipedia 'Seasons' article and it still remains that way -

https://en.wikipedia.org/wiki/Season

This was extended last year by NASA and the APOD website

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


Again and again the explanations now term the Equinox as the Sun directly over the Equator when the Equator always presents the same daylight length throughout an orbit.


Another thing which individuals are keen to jump in it that daylight/darkness is not equal on the Equinox and fiddle about with the tiny variations while they completely ignore the Polar day/night cycle where daylight extends beyond 6 months so no, not all parts of the Earth experience a daylight/darkness symmetry.

The recent uptake of the pivoting circle of illumination explanation is alarming, even for this mind accustomed to wayward notions of motions, orientation and so on. Wish I could give people credit for undoing this mess or better still - working towards explaining the proper mechanisms for the Equinox and the seasons but unfortunately not again this year or any other year previously despite the spectacular productive research the mechanism contains.

  #4  
Old September 20th 18, 11:21 PM posted to sci.astro.amateur
Mike Collins[_4_]
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Default The awful pivot

Gerald Kelleher wrote:
The pivoting circle of illumination off the Equator on an Earth with a
zero inclination was something I first saw in Wikipedia 'Seasons' article
and it still remains that way -

https://en.wikipedia.org/wiki/Season

This was extended last year by NASA and the APOD website

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


Again and again the explanations now term the Equinox as the Sun
directly over the Equator when the Equator always presents the same
daylight length throughout an orbit.


Another thing which individuals are keen to jump in it that
daylight/darkness is not equal on the Equinox and fiddle about with the
tiny variations while they completely ignore the Polar day/night cycle
where daylight extends beyond 6 months so no, not all parts of the Earth
experience a daylight/darkness symmetry.

The recent uptake of the pivoting circle of illumination explanation is
alarming, even for this mind accustomed to wayward notions of motions,
orientation and so on. Wish I could give people credit for undoing this
mess or better still - working towards explaining the proper mechanisms
for the Equinox and the seasons but unfortunately not again this year or
any other year previously despite the spectacular productive research the
mechanism contains.


On the equator the Sun is only directly overhead on the equinoxes. In the
northern summer the sun is always to the north and in the southern summer
it’s always to the south. At the equinoxes and only at the equinoxes it’s
directly overhead at noon.


  #5  
Old September 21st 18, 07:44 AM posted to sci.astro.amateur
Gerald Kelleher
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Posts: 1,382
Default The awful pivot

On Thursday, September 20, 2018 at 11:21:47 PM UTC+1, Mike Collins wrote:
Gerald Kelleher wrote:
The pivoting circle of illumination off the Equator on an Earth with a
zero inclination was something I first saw in Wikipedia 'Seasons' article
and it still remains that way -

https://en.wikipedia.org/wiki/Season

This was extended last year by NASA and the APOD website

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


Again and again the explanations now term the Equinox as the Sun
directly over the Equator when the Equator always presents the same
daylight length throughout an orbit.


Another thing which individuals are keen to jump in it that
daylight/darkness is not equal on the Equinox and fiddle about with the
tiny variations while they completely ignore the Polar day/night cycle
where daylight extends beyond 6 months so no, not all parts of the Earth
experience a daylight/darkness symmetry.

The recent uptake of the pivoting circle of illumination explanation is
alarming, even for this mind accustomed to wayward notions of motions,
orientation and so on. Wish I could give people credit for undoing this
mess or better still - working towards explaining the proper mechanisms
for the Equinox and the seasons but unfortunately not again this year or
any other year previously despite the spectacular productive research the
mechanism contains.


On the equator the Sun is only directly overhead on the equinoxes. In the
northern summer the sun is always to the north and in the southern summer
it’s always to the south. At the equinoxes and only at the equinoxes it’s
directly overhead at noon.


http://afewbitsmore.com/img/2015_ecliptic.png

(* The March/September orientations are reversed)

The orbital plane is defined as the broken line and with the Sun at the centre of the solar system and the only permissible motion of the Sun is its actual galactic orbital motion. This is why it is important to switch the explanation of the seasons to the motions and orientations of the Earth insofar as variations in planetary orbital speeds may be influenced by the galactic orbital motion of the Sun but this is set aside for the moment.

Unfortunately there is a white-out at the South Pole presently so Polar sunrise will be obscured by local weather but when the Sun comes into view or basically when the South and North Poles have turned and are at exactly 90 degrees to the Sun/Earth line (defined by the broken line) then this is the Equinox. The awkward and useless 'tilting earth' explanation disappears and the planets two distinct rotations take its place.

Unlike others who come into these threads want to be the best boy in the class, at least you are not afraid of being bullied into silence like others have so credit where it is due. The recent emergence of the pivoting circle of illumination and the planet with a zero inclination should alarm everyone with a shred of common sense and decency so it is these you should be countering and not me -

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



  #6  
Old September 21st 18, 08:23 AM posted to sci.astro.amateur
Gerald Kelleher
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Posts: 1,382
Default The awful pivot

The previous post, however technically accurate, was badly written so hands up on that.

http://afewbitsmore.com/img/2015_ecliptic.png

Concentrating on the June/December Solstices, the daily arcs of the Sun are almost completely ignored despite the ability in the 21st century to make observations on the changes in the daily path of the Sun from Solstice to Solstice which produce inverted arcs -

https://apod.nasa.gov/apod/ap161221.html

Of course the time lapse jumps the tracks after 1:53 with the worthless wandering Sun for the focus here is matching orientations of the Equator and other latitudes with observations of the path of the Sun.

Today, referenced off the orbital plane, sunrise and sunset on the Equator is 23 1/2 degrees North and South of the orbital plane whereas on the Solstices, sunrise and sunset is on the orbital plane with pronounced arcs depending on whether it is the June or December Solstice -

https://en.wikipedia.org/wiki/Deep_S...-tilt-23.4.gif


It is a falsehood to define the Equinox as equality of light everywhere on the planet, Polar sunrise on the Equinox should put a stop to that and draw attention to the North and South Poles as beacons for the surface rotation to the Sun arising from the Earth's orbital motion.


 




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