RR Lyrae ... a 14.1-hr light curve (and marathon)

Dear group,

One of the most recognized pulsating variable stars is RR Lyrae. Discovered in 1901, it is used as a "standard candle" for studies involving globular clusters amongst others.

It fluctuates by almost a full magnitude every 13.60 hours. However, being a summertime object, it is impossible to pursue a light curve during one session. With some strategic planning, we can do something over two all-nighters:

http://www.perseus.gr/Astro-Photomet...R-20120824.htm

Anthony.

On 8/27/12 8:18 AM, Anthony Ayiomamitis wrote:
Dear group,

One of the most recognized pulsating variable stars is RR Lyrae. Discovered in 1901, it is used as a "standard candle" for studies involving globular clusters amongst others.

It fluctuates by almost a full magnitude every 13.60 hours. However, being a summertime object, it is impossible to pursue a light curve during one session. With some strategic planning, we can do something over two all-nighters:

http://www.perseus.gr/Astro-Photomet...R-20120824.htm

Anthony.



Thanks Anthony.
New Semester of Astronomy Teaching starts tonight.
-Sam

On Aug 27, 8:18*am, Anthony Ayiomamitis wrote:
Dear group,

One of the most recognized pulsating variable stars is RR Lyrae. Discovered in 1901, it is used as a "standard candle" for studies involving globular clusters amongst others.

It fluctuates by almost a full magnitude every 13.60 hours. However, being a summertime object, it is impossible to pursue a light curve during one session. With some strategic planning, we can do something over two all-nighters:

http://www.perseus.gr/Astro-Photomet...R-20120824.htm

Anthony.

Very cool!

Rolando

Τη ΔευτÎ*Ï�α, 27 ΑυγοÏ�στου 2012 6:28:04 μ.μ. UTC+3, ο χÏ�ήστης Sam Wormley Î*γÏ�αψε:
On 8/27/12 8:18 AM, Anthony Ayiomamitis wrote:

Dear group,



One of the most recognized pulsating variable stars is RR Lyrae. Discovered in 1901, it is used as a "standard candle" for studies involving globular clusters amongst others.



It fluctuates by almost a full magnitude every 13.60 hours. However, being a summertime object, it is impossible to pursue a light curve during one session. With some strategic planning, we can do something over two all-nighters:



http://www.perseus.gr/Astro-Photomet...R-20120824.htm



Anthony.







Thanks Anthony.

New Semester of Astronomy Teaching starts tonight.

-Sam

Best of luck, Sam.

Anthony.

"Anthony Ayiomamitis" wrote in message
...

Dear group,

One of the most recognized pulsating variable stars is RR Lyrae. Discovered
in 1901, it is used as a "standard candle" for studies involving globular
clusters amongst others.

It fluctuates by almost a full magnitude every 13.60 hours. However, being a
summertime object, it is impossible to pursue a light curve during one
session. With some strategic planning, we can do something over two
all-nighters:

http://www.perseus.gr/Astro-Photomet...R-20120824.htm

Anthony.
================================================== ==
Perhaps you should record it from both Athens and Anchorage
continuously for a month with some strategic planning. Only
cloud will prevent it, Your colleague in Anchorage can overlap
every 12 hours.

-- Lord Androcles, Zeroth Earl of Medway

On Mon, 27 Aug 2012 18:09:08 +0100, "Lord Androcles, Zeroth Earl of
Medway" wrote:
"Anthony Ayiomamitis" wrote in message
...

It fluctuates by almost a full magnitude every 13.60 hours.
However, being a
summertime object, it is impossible to pursue a light curve during
one
session.

Here in the far north, where Lyra is a circumpolar constellation, you
could do it.

Great work!!

"Paul Schlyter" wrote in message
. ..

On Mon, 27 Aug 2012 18:09:08 +0100, "Lord Androcles, Zeroth Earl of
Medway" wrote:
Perhaps you should record it from both Athens and Anchorage
continuously for a month with some strategic planning. Only
cloud will prevent it, Your colleague in Anchorage can overlap
every 12 hours.
-- Lord Androcles, Zeroth Earl of Medway
Great work, Schlyter.
-- Lord Androcles, Zeroth Earl of Medway

On Aug 27, 4:28*pm, Sam Wormley wrote:
On 8/27/12 8:18 AM, Anthony Ayiomamitis wrote:

Dear group,

One of the most recognized pulsating variable stars is RR Lyrae. Discovered in 1901, it is used as a "standard candle" for studies involving globular clusters amongst others.

It fluctuates by almost a full magnitude every 13.60 hours. However, being a summertime object, it is impossible to pursue a light curve during one session. With some strategic planning, we can do something over two all-nighters:

http://www.perseus.gr/Astro-Photomet...R-20120824.htm

Anthony.

* *Thanks Anthony.
* *New Semester of Astronomy Teaching starts tonight.
* -Sam

I am afraid it is more like an empirical indoctrination,a pep talk for
mathematical students to continue wrecking havoc on astronomy.In the
past semester in sci.astro.astronomy,readers have learned -

1. that declination is not a factor in the equation of time and the
wandering Sun analemma is an exercise in Chinese whispers

2. the actual cause in the variations in natural noon is a combination
of two rotations to the central Sun and consequently two axes of
rotation

3 the Earth has an equatorial climate as opposed to the polar climate
of Uranus,this determination is due to the inclination of both planets
and the two dynamics explain the seasons and why natural noon cycles
vary.

4 The primary reference for timekeeping was originally an annual
terrestrial event,in this case the flooding of the Nile,and the
secondary reference for timekeeping was the coincident appearance of
Sirius from its annual disappearance from behind the glare of the Sun.

5 The AM/PM system and the Lat/Long system are extensions of the
calendar system

6 The Ra/Dec system is a homocentric extension of the 24 hour AM/PM
system

7 The Earth's interior is subject to the same fluid dynamics observed
in all rotating celestial objects with exposed fluid
compositions,namely differential rotation

8 The Earth's 26 mile spherical deviation is due to the uneven
rotational gradient between equatorial and polar latitudes.

9 The Earth's crust evolves,moves and is destroyed by zonal flow.

10 Twilight lengths vary with latitude due to decreasing latitudinal
speeds.

Each and every single point is based on a mountain of astronomical
data and the skill to interpret these topics properly.I suppose many
of you consider yourselves teachers here and do not engage in
treachery but unfortunately when you open your mouth to instruct
students you will propose ideas that are anti-astronomical in content
and character.You will weaken the student's ability to act and think
properly in later years and so it will be for all countries who allow
their children to come under the influence of the vicious strain of
empiricism that now takes the name of astronomy.

On Aug 27, 2:18Â*pm, Anthony Ayiomamitis wrote:
Dear group,

One of the most recognized pulsating variable stars is RR Lyrae. Discovered in 1901, it is used as a "standard candle" for studies involving globular clusters amongst others.

It fluctuates by almost a full magnitude every 13.60 hours. However, being a summertime object, it is impossible to pursue a light curve during one session. With some strategic planning, we can do something over two all-nighters:

http://www.perseus.gr/Astro-Photomet...R-20120824.htm

Anthony.

Let me see Anthony and in your own words -

"Note: As noted elsewhere, more men have walked on the moon than have
successfully photographed the analemma (see S&T, Dec/2003: 73)."

http://www.perseus.gr/Astro-Solar-Analemma.htm

Despite the fact that your Greek ancestors defined a planet or rather
distinguished then from the Sun and the moon by the 'wandering
motions' and you still insist in explaining what would normally be a
harmless exercise using the 24 hour clock in terms of planetary
dynamics tells me a lot about people today who have no respect for
their national or astronomical heritage and you have the distinction
of acting like a traitor for little more than a pittance.

"A planet (from Ancient Greek αστή� πλανήτης (astēr planētēs), meaning
"wandering star")" Greek definition

" Moreover, we see the other five planets also retrograde at times,
and stationary at either end [of the regression]. And whereas the sun
always advances along its
own direct path, they wander in various ways, straying sometimes to
the south and sometimes to the north; that is why they are called
"planets" [wanderers]. "
Copernicus

You equate the achievement of Neil Armstrong with taking a picture at
12 noon every day within the confines of the calendar system !!.I have
sometimes wondered - does it not bother you that you will eventually
be mocked as a traitor even though you have a chance to use the silly
'analemma' images to undo a lot of damage ?.They have already nailed
the origins of the analemma to a mapmaker and have treated them in the
same way as a 'pIltdown man' skull -worthless and meaningless and yet
you still continue to present the idea that they can be explained -

" Due to the earth's tilt about its axis (23.45°) and its elliptical
orbit about the sun, the location of the sun is not constant from day
to day when observed at the same time on each day over the course of a
full year. Furthermore, this loop will be inclined at different angles
depending on one's geographical latitude. "

http://www.perseus.gr/Astro-Solar-Analemma.htm

That is gruesome,nothing more or less.

Τη ΔευτÎ*Ï�α, 27 ΑυγοÏ�στου 2012 8:09:08 μ.μ. UTC+3, ο χÏ�ήστης Lord Androcles, Zeroth Earl of Medway Î*γÏ�αψε:
"Anthony Ayiomamitis" wrote in message

...



Dear group,



One of the most recognized pulsating variable stars is RR Lyrae. Discovered

in 1901, it is used as a "standard candle" for studies involving globular

clusters amongst others.



It fluctuates by almost a full magnitude every 13.60 hours. However, being a

summertime object, it is impossible to pursue a light curve during one

session. With some strategic planning, we can do something over two

all-nighters:



http://www.perseus.gr/Astro-Photomet...R-20120824.htm



Anthony.

================================================== ==

Perhaps you should record it from both Athens and Anchorage

continuously for a month with some strategic planning. Only

cloud will prevent it, Your colleague in Anchorage can overlap

every 12 hours.



-- Lord Androcles, Zeroth Earl of Medway

Actually a friend runs a very serious operation in Arizona involving premium equipment and he has kindly offered me access to the facility. He is expecting a one-meter scope this fall and he very kindly offered me (remote) access to it.

This is a godsend since such work could use continuous monitoring from multi-continent facilities. This is what the pros do with many of their studies..

Anthony.