Transcript Document 7471837

Last Words on CETI and some
Space Travel Basics
HNRS 228
w/Prof. Geller
What I Will Cover
Final words about CETI
Space Travel
Space Environment
Spaceflight Projects
Spaceflight Operations
A Cartoon about CETI
What does a telescope do?
Collect electromagnetic waves
Collecting ability proportional to the square
of the diameter of the objective
Resolve electromagnetic sources
Related to the atmosphere, wavelength and
curvature of the objective
 Magnify surfaces of planets and the Moon
Magnification only of Moon, Sun and planets
Looking
Beyond
the Eyes
Optical Telescopes
Reflector
Refractor
Different Views of Sun
Sun in Hydrogen-alpha
Sun in X-ray
Radio
Astronomy
Basics
A Little More Detail
Jansky’s Original
Radiotelescope
Grote Reber’s Telescope
170 foot
Diameter
Radiotelescope at
Green Bank,
WV
The 100meter
Green
Bank
Telescope
Even Bigger than you Think
Jupiter
in Radio
Saturn in Radio
3C296
Radio/Opti
cal
Composite
A Vision for George Mason
(based upon Univ. Indianapolis)
Small Radio Telescope
Justification
Radio science observations in the L-band
L-band lies in the 1400-1427 MHz region of
the electromagnetic spectrum
detection of what astronomers call the 21-cm
line of hydrogen
this is a portion of the hydrogen spectrum, in the
radio region of the electromagnetic spectrum,
which is generated by the neutral hydrogen clouds
in the interstellar medium
Small Radio Telescope
Justification
Observations in C-band, which is 43134338 MHz and 3788-3813 MHz
Radio science observations in the C-band
allow for the radio emission examination of
the moon, which acts as a body at a
temperature of 200 K.
Students will be able to scan the moon, and
detect the estimated 6000 joules of energy
from the lunar surface.
GMU SRT Background
Funding
National Science Foundation
education portion of grant won by Dr. Rita
Sambruna
Order History
ordered first week of June 2002
stated 12 week delivery time
received 15 October 2002
damaged antenna
GMU SRT Background Part II
Order History
boxes damaged
FedEx insurance inspector called and
visited to assess damage - refused claim
replacement parts to be shipped by
vendor
Base assembled on roof
1 November 2002
Remaining electronics and replacement
antenna parts received 30 January 2003
Did You Say Fragile?
Picking Up the Pieces on the Roof
Whistle While You Work
Tolerance
Cleanup On The Roof
The Base Of SRT
Servo Motors Attachment
Servos with Ring Assembly
Dish/Receiver Assembly
Readying for Final Mechanical
Assembly
From Mechanical to
Electrical
Assembled and Ready to Test
Sample Data
Even Smaller - Radio Jove
Small Radio Science Demonstration
Projects
Undergraduate research
Steve Richardson
web site built with some results from data
acquired using U of Indianapolis
• http://physics.gmu.edu/~arichar6/radio/index.html
prepared presentation for GMU “innovations” fair
prepared presentation for CPAC meeting at
Bucknell University
Smoothing Data
Visualizing the Data
Colorizing the Data
Must Deal With Noise
Worldwide Noise Sources
Family Portrait
(2001 conference)
Radio Astronomy at
George Mason University
Looking
To The
Future
Future GMU Observatory
Space Environment
Solar System
Reference System
Gravity and Mechanics
Trajectories
Planetary Orbits
Electromagnetics
Solar System
Considerations
Distance
From Sun
Energy, temperature,
condensation of
matter
Hostile Environment
Radiation (gamma
ray)
Radiation (x-ray)
Radiation (UV)
Coordinate Reference
Systems
Geographic
Celestial
Precession
Gravity and Mechanics
Orbits
Kepler
Newton
Orbital Transfers
Planets and Gravity
Flight Projects
Mission Inception
Experiments
Spacecraft Classification
Telecom
Onboard Systems
Science Instruments
Navigation
Mission Inception
Instruments
Telecommunications
Onboard Systems
Operations
Launch
Cruise
Encounter
Extended Operations
Deep Space Network
Launch
Cruise
Encounter
Deep Space Network