The Hubble Ultra Deep Field Image (see description on the right, below)

The Hubble Ultra Deep Field Image
(10,000 galaxies in an area 1% of the apparent size of the moon -- see description on the right, below)

Friday, September 14, 2018

2018 September


AEA Astronomy Club Newsletter September 2018

Contents

AEA Astronomy Club News & Calendar p.1
Video(s) & Picture(s) of the Month p. 2
Astronomy News p. 6
General Calendar p. 12
    Colloquia, lectures, mtgs. p. 12
    Observing p. 14
Useful Links p. 15
About the Club p. 16

Club News & Calendar.

Club Calendar

Club Meeting Schedule:

6 Sept
AEA Astronomy Club Meeting
Online or DVD Astronomy short lecture
(A1/1735)
AEA Astronomy Club meetings are now on 1st  Thursdays at 11:45 am.  For 2018:  Jan. 4 in A1/1029 A/B, Feb. 1 & March 1 in A1/2906 and for the rest of 2018 (April-Dec), the meeting room is A1/1735. 

Sept. 25 & 27 club table in A3 cafeteria from 11am to 1pm

11 Oct 11:30am – JWST tour at NGC.  Max group size 20 – please RSVP to Mark Clayson.  “meet outside Building M8 (highlighted on the attached map) at the intersection of Space Park Drive and Mettler Drive. Parking is fine anywhere on campus as long as there is no marking like "security," "reserved," or "carpool" on the ground. Please ensure that every attendee is a US Citizen. We will probably only need 30-45 minutes.”

Oct. 17  club booth at the Oktoberfest

Club News:  

The club’s FY19 AEA budget request has been submitted, including software for our new laptop (Starry Night Pro Plus 7 & Maxim DL Pro Suite), a new portable GoTo MCT (Meade ETX-90), an Android tablet & Sky Safari 5 Pro app, SkyFi III wireless scope controller, another Mt. Wilson night, quarterly pizza parties, Astronomical League group membership & Observer’s Handbook.

The Hubble Optics 16-inch ultralight/portable Dobsonian has been ordered, and should be here by early November (long production & shipping lead time from China).  Along with a large array of accessories, including digital setting circle.  We’ve also got a new 15-inch laptop for the club, and will begin loading it up with software (Starry Night, software with our various scopes and cameras, etc.). 

We need volunteers to help with: 

·         Preparing poster board(s) for our club booths in Sept. & Oct. (see below)
·         Manning our Sept. 25 & 27 club table in A3 cafeteria from 11am to 1pm (AEA clubs showcase)
·         Manning our Oct. 17  club booth at the Oktoberfest in the AGO mall
·         Populating our club Sharepoint site with material & links to the club’s Aerowiki & Aerolink materials
·         Arranging future club programs
·         Managing club equipment

Astronomy Video(s) & Picture(s) of the Month
(from Astronomy Picture of the Day, APOD: http://apod.nasa.gov/apod/archivepix.html


Animation: Perseid Meteor Shower https://apod.nasa.gov/apod/ap180808.html
Visualization Credit: Ian Webster; Data: NASA, CAMS, Peter Jenniskens (SETI Institute)
Explanation: Where do Perseid meteors come from? Mostly small bits of stony grit, Perseid meteoroids were once expelled from Comet Swift-Tuttle and continue to follow this comet's orbit as they slowly disperse. The featured animation depicts the entire meteoroid stream as it orbits our Sun. When the Earth nears this stream, as it does every year, the Perseid Meteor Shower occurs. Highlighted as bright in the animation, comet debris this size is usually so dim it is practically undetectable. Only a small fraction of this debris will enter the Earth's atmosphere, heat up and disintegrate brightly. This weekend promises some of the better skies to view the Perseid shower as well as other active showers because the new moon will not only be faint, it will be completely absent from the sky for most of the night. Although not outshining faint Perseids, the new moon will partially obstruct the Sun as a partial solar eclipse will be visible from some northern locations.



Live: Cosmic Rays from Minnesota https://apod.nasa.gov/apod/ap180806.html
Image Credit: Fermilab, NuMI, NOvA Collaboration
Explanation: Cosmic rays from outer space go through your body every second. Typically, they do you no harm. The featured image shows some of these fast moving particles as streaks going through Fermilab's NOvA Far Detector located in Ash River, Minnesota, USA. Although the image updates every 15 seconds, it only shows cosmic rays that occurred over a (changing) small fraction of that time, and mostly shows only one type of particle: muons. The NOvA Far Detector's main purpose is not to detect cosmic rays, though, but ratherneutrinos from the NuMI beam shot through the Earth from Fermilab near Chicago, Illinois, USA, 810 kilometers away. Only a few neutrino events are expected in NOvA per week, though. The NuMI / NOvA experiment is allowing humanity to better explore the nature of neutrinos, for example how frequently they change type during their trip. Cosmic rays themselves were discovered only about 100 years ago and can not only alter computer memory, but may have helped to create DNA mutations that resulted in, eventually, humans.
Seeing Titan 
Image Credit: VIMS Team, U. Arizona, U. Nantes, ESA, NASA
Explanation: Shrouded in a thick atmosphere, Saturn's largest moon Titan really is hard to see. Small particles suspended in the upper atmosphere cause an almost impenetrable haze, strongly scattering light at visible wavelengths and hiding Titan's surface features from prying eyes. But Titan's surface is better imaged at infrared wavelengths where scattering is weaker and atmospheric absorption is reduced. Arrayed around this centered visible light image of Titan are some of the clearest global infrared views of the tantalizing moon so far. In false color, the six panels present a consistent processing of 13 years of infrared image data from the Visual and Infrared Mapping Spectrometer (VIMS) on board the Cassini spacecraft. They offer a stunning comparison with Cassini's visible light view.


Launch of the Parker Solar Probe 
Image Credit & Copyright: John Kraus
Explanation: When is the best time to launch a probe to the Sun? The now historic answer -- which is not a joke because this really happened this past weekend -- was at night. Night, not only because NASA's Parker Solar Probe's (PSP) launch window to its planned orbitoccurred, in part, at night, but also because most PSP instruments will operate in the shadow of its shield -- in effect creating its own perpetual night near the Sun. Before then, years will pass as the PSP sheds enough orbital energy to approach the Sun, swinging past Venusseven times. Eventually, the PSP is scheduled to pass dangerously close to the Sun, within 9 solar radii, the closest ever. This close, the temperature will be 1,400 degrees Celsius on the day side of the PSP's Sun shield -- hot enough to melt many forms of glass. On the night side, though, it will be near room temperature. A major goal of the PSP's mission to the Sun is to increase humanity's understanding of the Sun's explosions that impact Earth's satellites and power grids. Pictured is the night launch of the PSP aboard the United Launch Alliances' Delta IV Heavy rocket early Sunday morning.


Total Solar Eclipse Shadow from a Balloon 
Image Credit: Kuaray Project, NASA Eclipse Ballooning Project, Brasilia Astronomy Club, Montana State U.
Explanation: Where were you during the Great American Eclipse of 2017? A year ago last week, over 100 million of people in North America went outside to see a partial eclipse of the Sun, while over ten million drove across part of the USA to see the Sun completely disappear behind the Moon -- a total solar eclipse. An estimated 88 percent of American adults saw the eclipse either personally or electronically. One of the better photographed events in human history, images from the eclipse included some unusual vistas, such as from balloons floating in the Earth's stratosphere. About fifty such robotic balloons were launched as part of NASA's Eclipse Ballooning project. Featured is a frame taken from a 360-degree panoramic video captured by one such balloon set aloft in Idaho by students fromBrazil in conjunction with NASA and Montana State University. Pictured, the dark shadow of the Moon was seen crossing the Earth below. Although the total eclipse lasted less than three minutes, many who saw it may remember it for a lifetime. Many North Americans will get a another chance to experience a total solar eclipse in 2024.


Astronomy News:
(from https://www.sciencedaily.com )

Galactic 'wind' stifling star formation is most distant yet seen

Date:
September 6, 2018
Source:
University of Texas at Austin
Summary:
For the first time, a powerful 'wind' of molecules has been detected in a galaxy located 12 billion light-years away. Probing a time when the universe was less than 10 percent of its current age, astronomers sheds light on how the earliest galaxies regulated the birth of stars to keep from blowing themselves apart.

Artist impression of an outflow of molecular gas from an active star-forming galaxy.
Credit: NRAO/AUI/NSF, D. Berry
For the first time, a powerful "wind" of molecules has been detected in a galaxy located 12 billion light-years away. Probing a time when the universe was less than 10 percent of its current age, University of Texas at Austin astronomer Justin Spilker's research sheds light on how the earliest galaxies regulated the birth of stars to keep from blowing themselves apart. The research will appear in the Sept. 7 issue of the journal Science.
"Galaxies are complicated, messy beasts, and we think outflows and winds are critical pieces to how they form and evolve, regulating their ability to grow," Spilker said.
Some galaxies such as the Milky Way and Andromeda have relatively slow and measured rates of starbirth, with about one new star igniting each year. Other galaxies, known as starburst galaxies, forge hundreds or even thousands of stars each year. This furious pace, however, cannot be maintained indefinitely.
To avoid burning out in a short-lived blaze of glory, some galaxies throttle back their runaway starbirth by ejecting -- at least temporarily -- vast stores of gas into their expansive halos, where the gas either escapes entirely or slowly rains back in on the galaxy, triggering future bursts of star formation.
Until now, however, astronomers have been unable to directly observe these powerful outflows in the very early universe, where such mechanisms are essential to prevent galaxies from growing too big, too fast.
Spilker's observations with the Atacama Large Millimeter/submillimeter Array (ALMA), show -- for the first time -- a powerful galactic wind of molecules in a galaxy seen when the universe was only 1 billion years old. This result provides insights into how certain galaxies in the early universe were able to self-regulate their growth so they could continue forming stars across cosmic time.
Astronomers have observed winds with the same size, speed and mass in nearby starbursting galaxies, but the new ALMA observation is the most distant unambiguous outflow ever seen in the early universe.
The galaxy, known as SPT2319-55, is more than 12 billion light-years away. It was discovered by the National Science Foundation's South Pole Telescope.
ALMA was able to observe this object at such tremendous distance with the aid of a gravitational lens provided by a different galaxy that sits almost exactly along the line of sight between Earth and SPT2319-55. Gravitational lensing -- the bending of light due to gravity -- magnifies the background galaxy to make it appear brighter, which allows the astronomers to observe it in more detail than they would otherwise be able to. Astronomers use specialized computer programs to unscramble the effects of gravitational lensing to reconstruct an accurate image of the more-distant object.
This lens-aided view revealed a powerful wind of star-forming gas exiting the galaxy at nearly 800 kilometers per second. Rather than a constant, gentle breeze, the wind is hurtling away in discrete clumps, removing the star-forming gas just as quickly as the galaxy can turn that gas into new stars.
The outflow was detected by the millimeter-wavelength signature of a molecule called hydroxyl (OH), which appeared as an absorption line: essentially, the shadow of an OH fingerprint in the galaxy's bright infrared light.
Molecular winds are an efficient way for galaxies to self-regulate their growth, the researchers note. These winds are probably triggered by either the combined effects of all the supernova explosions that go along with rapid, massive star formation, or by a powerful release of energy as some of the gas in the galaxy falls down onto the supermassive black hole at its center.
"So far, we have only observed one galaxy at such a remarkable cosmic distance, but we'd like to know if winds like these are also present in other galaxies to see just how common they are," Spilker concluded. "If they occur in basically every galaxy, we know that molecular winds are both ubiquitous and also a really common way for galaxies to self-regulate their growth."

Story Source:
Materials provided by University of Texas at Austin. Note: Content may be edited for style and length.

Journal Reference:
1.       J. S. Spilker, M. Aravena, M. Béthermin, S. C. Chapman, C.-C. Chen, D. J. M. Cunningham, C. De Breuck, C. Dong, A. H. Gonzalez, C. C. Hayward, Y. D. Hezaveh, K. C. Litke, J. Ma, M. Malkan, D. P. Marrone, T. B. Miller, W. R. Morningstar, D. Narayanan, K. A. Phadke, J. Sreevani, A. A. Stark, J. D. Vieira, A. Weiß. Fast molecular outflow from a dusty star-forming galaxy in the early Universe. Science, 2018; 361 (6406): 1016 DOI: 10.1126/science.aap8900


Light from ancient quasars helps confirm quantum entanglement

Results are among the strongest evidence yet for 'spooky action at a distance'

 

Date: August 20, 2018
Source: Massachusetts Institute of Technology
Summary: New research boosts the case for quantum entanglement. Scientists have used distant quasars, one of which emitted its light 7.8 billion years ago and the other 12.2 billion years ago, to determine the measurements to be made on pairs of entangled photons. They found correlations among more than 30,000 pairs of photons -- far exceeding the limit for a classically based mechanism.
     
FULL STORY


This artist's impression of one of the most distant, oldest, brightest quasars ever seen is hidden behind dust. The 
quasar dates back to less than one billion years after the big bang.
Credit: NASA/ESA/G.Bacon, STScI
Last year, physicists at MIT, the University of Vienna, and elsewhere provided strong support for quantum entanglement, the seemingly far-out idea that two particles, no matter how distant from each other in space and time, can be inextricably linked, in a way that defies the rules of classical physics.
Take, for instance, two particles sitting on opposite edges of the universe. If they are truly entangled, then according to the theory of quantum mechanics their physical properties should be related in such a way that any measurement made on one particle should instantly convey information about any future measurement outcome of the other particle -- correlations that Einstein skeptically saw as "spooky action at a distance."
In the 1960s, the physicist John Bell calculated a theoretical limit beyond which such correlations must have a quantum, rather than a classical, explanation.
But what if such correlations were the result not of quantum entanglement, but of some other hidden, classical explanation? Such "what-ifs" are known to physicists as loopholes to tests of Bell's inequality, the most stubborn of which is the "freedom-of-choice" loophole: the possibility that some hidden, classical variable may influence the measurement that an experimenter chooses to perform on an entangled particle, making the outcome look quantumly correlated when in fact it isn't.
Last February, the MIT team and their colleaguessignificantly constrainedthe freedom-of-choice loophole, by using 600-year-old starlight to decide what properties of two entangled photons to measure. Their experiment proved that, if a classical mechanism caused the correlations they observed, it would have to have been set in motion more than 600 years ago, before the stars' light was first emitted and long before the actual experiment was even conceived.
Now, in a paper published today in Physical Review Letters, the same team has vastly extended the case for quantum entanglement and further restricted the options for the freedom-of-choice loophole. The researchers used distant quasars, one of which emitted its light 7.8 billion years ago and the other 12.2 billion years ago, to determine the measurements to be made on pairs of entangled photons. They found correlations among more than 30,000 pairs of photons, to a degree that far exceeded the limit that Bell originally calculated for a classically based mechanism.
"If some conspiracy is happening to simulate quantum mechanics by a mechanism that is actually classical, that mechanism would have had to begin its operations -- somehow knowing exactly when, where, and how this experiment was going to be done -- at least 7.8 billion years ago. That seems incredibly implausible, so we have very strong evidence that quantum mechanics is the right explanation," says co-author Alan Guth, the Victor F. Weisskopf Professor of Physics at MIT.
"The Earth is about 4.5 billion years old, so any alternative mechanism -- different from quantum mechanics -- that might have produced our results by exploiting this loophole would've had to be in place long before even there was a planet Earth, let alone an MIT," adds David Kaiser, the Germeshausen Professor of the History of Science and professor of physics at MIT. "So we've pushed any alternative explanations back to very early in cosmic history."
Guth and Kaiser's co-authors include Anton Zeilinger and members of his group at the Austrian Academy of Sciences and the University of Vienna, as well as physicists at Harvey Mudd College and the University of California at San Diego.
A decision, made billions of years ago
In 2014, Kaiser and two members of the current team, Jason Gallicchio and Andrew Friedman,proposed an experimentto produce entangled photons on Earth -- a process that is fairly standard in studies of quantum mechanics. They planned to shoot each member of the entangled pair in opposite directions, toward light detectors that would also make a measurement of each photon using a polarizer. Researchers would measure the polarization, or orientation, of each incoming photon's electric field, by setting the polarizer at various angles and observing whether the photons passed through -- an outcome for each photon that researchers could compare to determine whether the particles showed the hallmark correlations predicted by quantum mechanics.
The team added a unique step to the proposed experiment, which was to use light from ancient, distant astronomical sources, such as stars and quasars, to determine the angle at which to set each respective polarizer. As each entangled photon was in flight, heading toward its detector at the speed of light, researchers would use a telescope located at each detector site to measure the wavelength of a quasar's incoming light. If that light was redder than some reference wavelength, the polarizer would tilt at a certain angle to make a specific measurement of the incoming entangled photon -- a measurement choice that was determined by the quasar. If the quasar's light was bluer than the reference wavelength, the polarizer would tilt at a different angle, performing a different measurement of the entangled photon.
In their previous experiment, the team used small backyard telescopes to measure the light from stars as close as 600 light years away. In their new study, the researchers used much larger, more powerful telescopes to catch the incoming light from even more ancient, distant astrophysical sources: quasars whose light has been traveling toward the Earth for at least 7.8 billion years -- objects that are incredibly far away and yet are so luminous that their light can be observed from Earth.
Tricky timing
On Jan. 11, 2018, "the clock had just ticked past midnight local time," as Kaiser recalls, when about a dozen members of the team gathered on a mountaintop in the Canary Islands and began collecting data from two large, 4-meter-wide telescopes: the William Herschel Telescope and the Telescopio Nazionale Galileo, both situated on the same mountain and separated by about a kilometer.
One telescope focused on a particular quasar, while the other telescope looked at another quasar in a different patch of the night sky. Meanwhile, researchers at a station located between the two telescopes created pairs of entangled photons and beamed particles from each pair in opposite directions toward each telescope.
In the fraction of a second before each entangled photon reached its detector, the instrumentation determined whether a single photon arriving from the quasar was more red or blue, a measurement that then automatically adjusted the angle of a polarizer that ultimately received and detected the incoming entangled photon.
"The timing is very tricky," Kaiser says. "Everything has to happen within very tight windows, updating every microsecond or so."
Demystifying a mirage
The researchers ran their experiment twice, each for around 15 minutes and with two different pairs of quasars. For each run, they measured 17,663 and 12,420 pairs of entangled photons, respectively. Within hours of closing the telescope domes and looking through preliminary data, the team could tell there were strong correlations among the photon pairs, beyond the limit that Bell calculated, indicating that the photons were correlated in a quantum-mechanical manner.
Guth led a more detailed analysis to calculate the chance, however slight, that a classical mechanism might have produced the correlations the team observed.
He calculated that, for the best of the two runs, the probability that a mechanism based on classical physics could have achieved the observed correlation was about 10 to the minus 20 -- that is, about one part in one hundred billion billion, "outrageously small," Guth says. For comparison, researchers have estimated the probability that the discovery of the Higgs boson was just a chance fluke to be about one in a billion.
"We certainly made it unbelievably implausible that a local realistic theory could be underlying the physics of the universe," Guth says.
And yet, there is still a small opening for the freedom-of-choice loophole. To limit it even further, the team is entertaining ideas of looking even further back in time, to use sources such as cosmic microwave background photons that were emitted as leftover radiation immediately following the Big Bang, though such experiments would present a host of new technical challenges.
"It is fun to think about new types of experiments we can design in the future, but for now, we are very pleased that we were able to address this particular loophole so dramatically. Our experiment with quasars puts extremely tight constraints on various alternatives to quantum mechanics. As strange as quantum mechanics may seem, it continues to match every experimental test we can devise," Kaiser says.
This research was supported in part by the Austrian Academy of Sciences, the Austrian Science Fund, the U.S. National Science Foundation, and the U.S. Department of Energy.

Story Source:
Materials provided by Massachusetts Institute of Technology. Original written by Jennifer Chu. Note: Content may be edited for style and length.

Journal Reference:
1.       Dominik Rauch, Johannes Handsteiner, Armin Hochrainer, Jason Gallicchio, Andrew S. Friedman, Calvin Leung, Bo Liu, Lukas Bulla, Sebastian Ecker, Fabian Steinlechner, Rupert Ursin, Beili Hu, David Leon, Chris Benn, Adriano Ghedina, Massimo Cecconi, Alan H. Guth, David I. Kaiser, Thomas Scheidl, Anton Zeilinger. Cosmic Bell Test Using Random Measurement Settings from High-Redshift Quasars. Physical Review Letters, 2018; 121 (8) DOI: 10.1103/PhysRevLett.121.080403

 General Calendar:

Colloquia, Lectures, Seminars, Meetings, Open Houses & Tours:

Colloquia:  Carnegie (Tues. 4pm), UCLA, Caltech (Wed. 4pm), IPAC (Wed. 12:15pm) & other Pasadena (daily 12-4pm):  http://obs.carnegiescience.edu/seminars/ 
Carnegie astronomy lectures – only 4 per year in the Spring www.obs.carnegiescience.edu.  Visit www.huntington.org for directions.  For more information about the Carnegie Observatories or this lecture series, please contact Reed Haynie.  . Click here for more information.

6 Sept
AEA Astronomy Club Meeting
Online or DVD Astronomy short lecture
(A1/1735)





7 Sept  
Friday Night 7:30PM SBAS  Monthly General Meeting
in the Planetarium at El Camino College (16007 Crenshaw Bl. In Torrance)Topic: “The One Hour Physics Lecture” Dr. Steven Morris, Harbor College





 Sept 30    
UCLA Meteorite Gallery --
Location: UCLA Campus

PROF. HILKE SCHLICHTING

KUIPER BELT OBJECTS


Location: Geology 3656
Time: 2:30PM
In 1930 a small “planet”, Pluto, was discovered that had a strange orbit. The mean radius of the orbit was larger than that of Neptune, but during part of the orbit (e.g., 1979-1999) the object is closer to the Sun than Neptune. Thanks to research led by our UCLA colleague Dave Jewitt, additional “planets” with strange orbits occupying the region 30 to 50 AU from the Sun have been found. The objects largely consist of ices of water, methane and ammonia. Prof. Schlichting will talk about the formation of Kuiper-Belt objects, dynamical processes that caused their distribution in space, and relationships to comets. Picture credit: NASA
Oct. 4 & 5 The von Kármán Lecture Series: 2018 

 

Mapping Disasters from Space


How we are using GPS and space-based radar to respond to earthquakes, volcanic unrest, floods, and fires.
Speaker:
Sue Owen
Location:
Thursday, Oct 4, 2018, 7pm
The von Kármán Auditorium at JPL
4800 Oak Grove Drive
Pasadena, CA
› Directions

Friday, Oct 5, 2018, 7pm
Caltech’s Ramo Auditorium
1200 E California Blvd.
Pasadena, CA
› Directions


4 Oct
AEA Astronomy Club Meeting
Pizza Party & DVD Lecture
(A1/1735)

Observing:

The following data are from the 2018 Observer’s Handbook, and Sky & Telescope’s 2018 Skygazer’s Almanac & monthly Sky at a Glance.

Current sun & moon rise/set/phase data for L.A.:  http://www.timeanddate.com/astronomy/usa/los-angeles

Sun, Moon & Planets for September:

  

Moon: Sept 2 last quarter, Sept 9 new, Sept 16 1st quarter, Sept 24 Full,             
Planets: Venus visible at dusk.  Mars visible at dusk, highest before midnight.  Mercury visible at dawn through the 11th.  Saturn highest at dusk, sets near midnight. Jupiter visible at dusk, sets early evening.
Other Events:

 
1 Sept
SBAS Saturday Night In Town Dark Sky Observing Session at Ridgecrest Middle School– 28915 North Bay Rd. RPV, Weather Permitting: Please contact Greg Benecke to confirm that the gate will be opened! http://www.sbastro.net/

7 September Neptune at Opposition

8 Sept
LAAS Private dark sky  Star Party
8 Sept
SBAS out-of-town Dark Sky observing – contact Greg Benecke to coordinate a location. http://www.sbastro.net/.  


5,12,19,26 Sept
LAAS The Garvey Ranch Observatory is open to the public every Wednesday evening from 7:30 PM to 10 PM. Go into the dome to use the 8 Inch Refractor or observe through one of our telescopes on the lawn. Visit our workshop to learn how you can build your own telescope, grind your own mirror, or sign up for our free seasonal astronomy classes.

Call 213-673-7355 for further information.
Time: 7:30 PM - 10:00 PM
Location: Garvey Ranch Obs. , 781 Orange Ave., Monterey Park, CA 91755


22 Sept
LAAS Public  Star Party: Griffith Observatory Grounds 2-10pm


Internet Links:

Telescope, Binocular & Accessory Buying Guides


General


Regional (Southern California, Washington, D.C. & Colorado)
Southern California & Beyond Amateur Astronomy Organizations, Observatories & Planetaria
Mt. Wilson Observatory description, history, visiting


About the Club

Club Websites:  Internal (Aerospace): https://aeropedia.aero.org/aeropedia/index.php/Astronomy_Club  It is updated to reflect this newsletter, in addition to a listing of past club mtg. presentations, astronomy news, photos & events from prior newsletters, club equipment, membership & constitution.  We have linked some presentation materials from past mtgs.  Our club newsletters are also being posted to an external blog, “An Astronomical View” http://astronomicalview.blogspot.com/. 
 
Membership.  For information, current dues & application, contact Alan Olson, or see the club website (or Aerolink folder) where a form is also available (go to the membership link/folder & look at the bottom).  Benefits will include use of club telescope(s) & library/software, membership in The Astronomical League, discounts on Sky & Telescope magazine and Observer’s Handbook, field trips, great programs, having a say in club activities, acquisitions & elections, etc.

Committee Suggestions & Volunteers.  Feel free to contact:  Mark Clayson, President & Program Committee Chairman, Walt Sturrock, VP, TBD Activities Committee Chairman (& club Secretary), or Alan Olson, Resource Committee Chairman (over equipment & library, and club Treasurer).

Mark Clayson,
AEA Astronomy Club President

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