Astronomy Club of Augusta
2017-2018
SEED Information
October 07, 2017, Saturday, 10AM - 3PM
set up & registration, 8:00-10AM
If you came to this webpage and would like to volunteer,
but
are not listed below, please email.
Volunteers
Fri. 10AM Load the truck: Stan, Tedda,
Sat. 8:00AM Set
up at RPSEC: Help from ALL members.
Thanks to Baker White for loan of one T-Post Pounder.
Gloria Sloan S
Tedda Howard M Sun
size, distance, temperature, brightness T-shirt & Lunch distribution:
Helen Miller M
Kenneth Beard L Solar
Structure
Vinay Kolar L Solar Scope
SusanBlas L Sun: Computer Power Point Loop
John Blas L
Stephen Miller L Solar Scope
Mike Close L Solar Cycles
Bruno Huguet L Solar Scope
Stan Howard XL Televue w Solar Filter 8:30-9:30AM Pics/Video StanH
Aishu Kolar XL
John White XL Indirect Solar Projection box,
shoe box projectors
Cassel Sloan XL Electromagnetic Spectrum
Indoors:
Mark Moffatt 3XL Station 2a. 10:00-12:30 Zooniverse
Adela Dziekanowski 3XL Station 2b. 12:30- 3:00 2018 Parker Solar Probe
2:45PM Everyone:. Load/Clean up. Thank you!
We need MORE volunteers!
strong arms,
string
tie-ers,
Welcome and Registration
Darth
Vader Bucket Head Viewers
Direct
solar views with Welder Glass
Indirect DarthVader solar views, shoe
box projectors, cards,
Solar spacecraft: at LaGrange points, encircling Sun,
Sun-Earth
relationships: CMEs, Van Allen Belts, . . .
Sticker/bookmark/photo
hand outs
Bubbles
Please
email.
Thank you for volunteering for SEED again this year. It is a great experience.
We can assure first timers that at the end you will feel tired, but rewarded!
Please bring your sun, solarscope, spectroscope,
solar viewers, and other solar projects.
If
you have posters or information that we can put on our Solar Astronomy bulletin
board,
please let us know, and bring it/them with you, or to our meetings beforehand.
Thanks for being involved!
Stan Howard
VP Observing
Here are some suggestions to help everyone:
Take care of yourself with HAT, sun block, long sleeve shirt, pants or long
skirt,
Bring your equipment, project, etc. - anything about
the sun! and/or The DAWN Mission
Come early: We will be here at 8:00AM to
set up equipment, pass out free t-shirts and ID tags, set up posters, get
organized.
You will also get a Free Lunch.
Please come and help.
Thank you.
Trivia
Question 2017: What temperature is the visible surface of the
sun? the corona?
Answer: Photosphere is 5800 K, Corona is 1-3 million K.
No wonder the sun's rays seem bright and still feel hot when they
reach Earth!
Temperature Conversion table in K=Kelvin,
C=Centigrade, F= Farenheit
1-3 million
K
Corona
5800 K
Photosphere
373
K 100 C 212
F boiling
point of water at sea level
310.15K
37 C 98.6
F human body temperature
273 K
0
C 32 F
freezing
point of water into ice at sea level
0
K -273.15 C -459.67 F absolute zero
The sun's corona is much hotter (by a factor from 150 to 450) than
the visible surface of the Sun. The photosphere's average temperature is
5800 kelvins compared to the corona's one to three
million kelvins.
The corona is 10−12 times as dense as the photosphere, and
so produces about one-millionth as much visible light.
https://en.wikipedia.org/wiki/Corona
https://www.thoughtco.com/chemistry-temperature-conversion-table-4012466
http://www.answers.com/Q/What_is_the_average_body_temperature_degrees_kelvin_and_celsiuses?#slide=2
http://www.csgnetwork.com/tempconv.html
Trivia Questions 2016:
A. What
are the 4 requirements for a DWARF PLANET?
B.
Name the 5 dwarf planets accepted by the IAU, in order.
C.
Where are we searching for more?
Answer:
A. The IAU defines a "dwarf planet" as a celestial
body that
1.
is in orbit around the Sun,
2.
has sufficient mass for its gravity to form a nearly
round shape,
3.
has NOT cleared the neighborhood around its orbit, and
4.
is not a satellite.
All
other objects orbiting the Sun, except planets and satellites,
shall
be referred to collectively as "Small Solar System Bodies."
B. The IAU has declared 5 to be dwarf planets:
Ceres, Pluto, Haumea, Makemake,
Eris (the largest).
Brown currently identifies eleven known objects—the five accepted by the
IAU plus
2007 OR10, Quaoar, Sedna, Orcus, (307261)
2002 MS4 and Salacia—as "virtually
certain",
with another dozen highly likely, and possibly >10,000 beyond the Kuiper Belt.
C. The Kuiper Belt and the Oort
Cloud.
Trivia
Question 2015:
What
are three propulsion sources used in outer space by the
DAWN
Mission spacecraft or the New Horizons spacecraft?
Answer: 1. Gravity Assist (Slingshot), 2. Ion
Propulsion, 3. Hydrazine(chemical rocket).
Ion
propulsion makes efficient use of the onboard fuel
by
accelerating it to a velocity ten times that of chemical rockets.
This
efficiency is measured in terms of the specific impulse of the fuel (Isp).
-
See more at: http://dawn.jpl.nasa.gov/mission/ion_prop.asp#sthash.3QCszH9X.dpuf
Ion
thrusters create very low levels of thrust compared to conventional chemical
rockets
but
achieve very high specific impulse, or propellant mass efficiencies,
by
accelerating their exhausts to very high speed.
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