Polar astronomy

Lots of innovations to consider during the period of polar twilight after the March Equinox at the South Pole station. The same principles apply to polar sunset as they do at habitable latitudes as objects close to the central Sun will appear during that period to the left of the sun for an extended period of about 6 continuous weeks before polar darkness sets in.

On the Solstice neither Venus nor Mercury will be observed for the same reason that at daily rotational midnight, the body of the Earth prevents objects close to the Sun from being observed.


Polar twilight would not only present unique challenges but also unique opportunities including observational innovations relating to orbital elements as rotation is residual in the North pole region (zero at the North polar latitude itself). Just a normal perspective in an era that is less so.

On Thu, 1 Mar 2018 13:01:36 -0800 (PST), Gerald Kelleher wrote:

Lots of innovations to consider during the period of polar twilight after the March Equinox at the South Pole station. The same principles apply to polar sunset as they do at habitable latitudes as objects close to the central Sun will appear during that period to the left of the sun for an extended period of about 6 continuous weeks before polar darkness sets in.

On the Solstice neither Venus nor Mercury will be observed for the same reason that at daily rotational midnight, the body of the Earth prevents objects close to the Sun from being observed.

Polar twilight would not only present unique challenges but also unique opportunities including observational innovations relating to orbital elements as rotation is residual in the North pole region (zero at the North polar latitude itself). Just a normal perspective in an era that is less so.

I'm a poor writer, as no doubt many here have noticed on more than one
occaision; but what you publish here is indecipherable.

Haven't you considered how much your choice to not take the time to
organize your topics into complete subjects that you then explain in a
systematic and through way - hurts your agenda?

You can't do what you claim to want to do - on Usenet. We are not a
bunch of neo lithic tribal-types sitting around the campfire groping for
answers in darkness. We don't want to go back to that - even if you do.


--
Email address is a Spam trap.

Bill:
Haven't you considered how much your choice to not take the time to
organize your topics into complete subjects that you then explain in a
systematic and through way - hurts your agenda?

He's a troll and his agenda is to reel in people like you. I would say
that he has been splendidly successful at fulfilling his agenda.

--
I agree with almost everything that you have said and almost everything that
you will say in your entire life.

usenet *at* davidillig dawt cawm

On Thursday, March 1, 2018 at 5:23:29 PM UTC-8, Davoud wrote:
Bill:
Haven't you considered how much your choice to not take the time to
organize your topics into complete subjects that you then explain in a
systematic and through way - hurts your agenda?

He's a troll and his agenda is to reel in people like you. I would say
that he has been splendidly successful at fulfilling his agenda.

Also, his knowledge of astronomy is woefully off the tracks...

On Thu, 1 Mar 2018 17:43:11 -0800 (PST), palsing wrote:

Also, his knowledge of astronomy is woefully off the tracks...

Appologies if my reply to you know who seems naieve. I simply will not
reveal my reason for replying to his post.

If he reponds to me in his typical fashion - please, everyone, do
yourselves a favor and just look the other way.
--
Email address is a Spam trap.

Bill:
Haven't you considered how much your choice to not take the time to
organize your topics into complete subjects that you then explain in a
systematic and through way - hurts your agenda?

Davoud:
He's a troll and his agenda is to reel in people like you. I would say
that he has been splendidly successful at fulfilling his agenda.

palsing:
Also, his knowledge of astronomy is woefully off the tracks...

You missed the point. There is no way to judge what he knows or doesn't
know about astronomy; he's not here for astronomy, he's here for
trolling. If he were an expert on all things astronomical (and he could
be, you know) he would have to conceal that fact. Because he's not here
for astronomy, he's here as a troll.

--
I agree with almost everything that you have said and almost everything that
you will say in your entire life.

usenet *at* davidillig dawt cawm

On Thu, 01 Mar 2018 22:41:22 -0500, Davoud wrote:

You missed the point. There is no way to judge what he knows or doesn't
know about astronomy; he's not here for astronomy, he's here for
trolling. If he were an expert on all things astronomical (and he could
be, you know) he would have to conceal that fact. Because he's not here
for astronomy, he's here as a troll.

You can't take a hint.
I'm not going to reveal anything.
Feel free to castigate me; but that is how is has to be.
--
Email address is a Spam trap.

On Friday, March 2, 2018 at 3:41:26 AM UTC, Davoud wrote:
Bill:
Haven't you considered how much your choice to not take the time to
organize your topics into complete subjects that you then explain in a
systematic and through way - hurts your agenda?

Davoud:
He's a troll and his agenda is to reel in people like you. I would say
that he has been splendidly successful at fulfilling his agenda.

palsing:
Also, his knowledge of astronomy is woefully off the tracks...

You missed the point. There is no way to judge what he knows or doesn't
know about astronomy; he's not here for astronomy, he's here for
trolling. If he were an expert on all things astronomical (and he could
be, you know) he would have to conceal that fact. Because he's not here
for astronomy, he's here as a troll.

--
I agree with almost everything that you have said and almost everything that
you will say in your entire life.

usenet *at* davidillig dawt cawm

Well that is some piece of kit you have and I see Roland probably give you a deal on one of his celestial sphere mounts -

http://www.primordial-light.com/technique.html


With the rise of celestial sphere software like stellarium, the rise of 'explanations' based on RA/Dec follow suit in an alarming sort of way as the Earth attains a zero degree inclination while the Sun crosses the meridian going North thereby causing the circle of illumination to go vertical on the equinox ! -

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

What to make of such contrived nonsense !.


The RA/Dec clockwork solar system of the 17th century finds its final justification, even though it is an outrigger of the calendar framework, as a pivoting circle of illumination and by any measure that is horrific.

Davoud wrote:

Bill:
Haven't you considered how much your choice to not take the time to
organize your topics into complete subjects that you then explain in a
systematic and through way - hurts your agenda?

He's a troll and his agenda is to reel in people like you. I would say
that he has been splendidly successful at fulfilling his agenda.

Reel in to what purpose?

As far as I can tell all he does is to explain what we all already know,
in a way that none of us understands. Quite a feat, really,

--
I recommend Macs to my friends, and Windows machines
to those whom I don't mind billing by the hour

On Saturday, March 3, 2018 at 8:25:15 PM UTC, Anders Eklöf wrote:
Davoud wrote:

Bill:
Haven't you considered how much your choice to not take the time to
organize your topics into complete subjects that you then explain in a
systematic and through way - hurts your agenda?

He's a troll and his agenda is to reel in people like you. I would say
that he has been splendidly successful at fulfilling his agenda.

Reel in to what purpose?

As far as I can tell all he does is to explain what we all already know,
in a way that none of us understands. Quite a feat, really,

--
I recommend Macs to my friends, and Windows machines
to those whom I don't mind billing by the hour

These comments give me a lot of satisfaction as once you are shown how it is done it all becomes common knowledge and easy. The illusory vs actual loops of the planets owes a lot to astrophotographers and animation so have no problem commending others for their efforts -

https://apod.nasa.gov/apod/ap031216.html

VS

http://www.popastro.com/images/plane...ary%202012.jpg

To account for the Earth's orbital motion in tandem with the loop created by Venus brings a new perspective in where the direct/retrogrades of the inner planets do not occur against a stationary background as the outer direct/retrogrades do. This is because the stars close to the Sun (where the smaller circumferences of Venus and Mercury inhabit) transition from left to right of the Sun as a consequence of the Earth's orbital motion -

https://www.youtube.com/watch?v=MdFrE7hWj0A

This would be for the real astronomical purists.