SIRIUS
www.ocastronomers.org

September 2024

ASTRONOMERThe Newsletter of the Orange County Astronomers

Free to members, subscriptions $12 for 12 issues

Volume 51, Number 9This is the globular cluster M13 (“ Hercules”) TAKEN BY Ross Salinger about 3 years ago
using an AP Starfire 155mm refractor and ASI071 color camera.

Upcoming Events - free and open to the public
Beginner’s class

Friday, 4 October at 7:30 to 9:30 PM
ONLINE
This is the 2nd session of the Beginners Astronomy Class. It covers the different types of equipmentused to observe the night sky, including telescopes, mounts, eyepieces, filters, and advantages anddisadvantages of different options.

Club Meeting

Friday, 13 September at 7:30 to 9:30 PM
IN PERSON at Chapman University and ONLINE"What's Up?": Lonny Buinis from UACNJ (online)
Main speaker: Dr. Marta Filipa Simões from Macau University of Science and Technology (online)
presenting “What is the role of fungi in space exploration?”Open Spiral Bar

Saturday, 14 September at 10:00 to 11:30 PM
ONLINE
Want to socialize? Grab your images, experiences, questions, or none and see your fellow Orange
County Astronomers face-to-face.

Star Parties

Saturday, 28 September and 5 October at the OCA Anza site.
??? Irvine site dates are yet to be determined

The monthly club meeting is viewable in progress on Zoom andour social media platforms. The recording is available on theseplatforms after the meeting is over.

https://twitter.com/OCAstronomers
https://www.facebook.com/OrangeCountyAstronomers
https://www.youtube.com/@ocastronomers

Please consult the calendar on the OCA website to RSVP online meetings (required)President’s Message
By Barbara Toy
It seems that this year has been an unusually fast-moving year for just about everyone I talk to – and here we are at thefall equinox already. The eclipse in April wasn’t all that long ago, but it was on the other side of the Summer Solstice,and now we’re halfway to the Winter Solstice, in the heart of the holiday season. Not that most of us want to think about
the holiday season yet, even though it could be a justification for getting some cool new astronomical gear…
Even though I was among the hundreds that got clouded out for the eclipse, I did wind up with a collection of eclipse Tshirts, thanks to my husband, who is much better at finding these things than I am. I’ve discovered since then that thoseT-shirts get more response than any of my other shirts. Total strangers regularly ask if I actually saw the eclipse, thenask questions or start telling me about their own attempts to see it, or aspirations of seeing one in the future. That
eclipse is a real ice-breaker for conversations, much more than the 2017 eclipse for some reason.
It's a reminder that many people out there, from all walks of life and backgrounds, are fascinated by astronomical eventsand astronomy in general. Of course, there are those who confuse astronomy with astrology and, even after thedifference is explained, remain foggy about it, but even they are usually delighted when actual objects in the sky are
pointed out to them, or when they see them for themselves through binoculars or a telescope.
In these divided times in our society, it’s good to know that astronomy has the rare ability to bridge gaps between people
and give them interesting and non-acrimonious topics to discuss. Weather, a related topic of interest to those who areplanning to view or image astronomical objects, can also bridge a lot of gaps – we’re all affected by weather, after all.
So, if you’re with a bunch of people where you need to make conversation and want to keep things non-controversial,
think of astronomy and weather for topics to see you through. And it’s always possible that this will help you find fellow
astronomers in the group, making it more fun for all of you.
Outreach
September generally marks the start of a new school year, and historically that has meant an increase in requests foroutreach events at various schools. Martin Christensen, our current Outreach Coordinator, is looking for volunteers –even if you could only attend one event this outreach season, please send him you contact information atoutreach@ocastronomers.org.
Fire Near Anza Site
As most of you already know, we had another brush fire this year that passed close by our Anza site, formally known as
the Nixon Fire, the second in two years (BonnyFire being exactly one year prior). Fortunately, the winds didn’t send it inour direction, and we didn’t suffer any damage other than not having access to our site for over a week and having power
shut off for part of that time. Others in our area were not so lucky – per Cal Fire, there were several homes and otherstructures that were burned, but fortunately no loss of life. If any of you know anyone who did suffer losses from thefire, I hope you’ll convey our sympathy.
We still have at least a couple months of fire season left, and having one fire in our vicinity doesn’t mean there couldn’t
be more. If you’re out at Anza and see anything that you think could present a fire hazard or have a way to make thesite more defensible, please bring it to the attention of any Board member who may be out there, or send a notice about
it to the Board (board@ocastronomers.org will get a message to all Board members). If you can remedy the situation
yourself, such as by cutting back grasses or bushes that are too close to a building, please do.
At this point, our Anza site is fully available to our members, and we expect our regular star parties to go forward asscheduled. Those coming up after you’re likely to receive this are September 28 and October 5 (the Saturdays before
and after the Wednesday new moon). The site, as usual, is open to members and their guests all the time, and manymembers use it for viewing or imaging on non-star party nights. Whenever you go out there, it’s wise these days tocheck not just the weather but also for conditions that might shut off access to the site (flash floods from thunderstorms
sometimes do a lot of damage to the dirt roads), and for smoke conditions that could affect viewing or imaging conditions.
That said, I hope you have great conditions for any time you spend out under the stars!

© Barbara Toy, August 2024

2

AstroSpace Update
August 2024
Astronomy and space news summarized by Don Lynn from NASA and other sources
Martian Sulfur – Mars rover Curiosity ran
over a rock and broke it open, revealing
yellow material inside. It was found to be
sulfur crystals, the first time such were
found on Mars, though sulfur compounds
have been previously found. A look aroundthe area found more similar rocks. Now
astronomers have to figure out the process
by which these crystals could have formed.
Curiosity drilled a sample of the sulfur for
further analysis. The discovery was made in
an area covered with a jumble of rocks thatappear to have been left by ancient floods
and landslides rushing down a channel.
Martian Lake – The European Mars
Express spacecraft has imaged a region
known as Caralis Chaos and analysis of theimages shows that it and surrounding areas
were a huge lake billions of years ago. Thatlake has been named Lake Eridania. Its shoreline has been found by chloride deposits left by evaporation. It wascalculated that the volume of water that filled this lake is 3 times the volume of the largest lake on Earth (theCaspian Sea).
Martian Water – New analysis of datafrom the seismometer on the now-retired
Martian InSight lander shows that there is azone of fractured rock with cracks filled withliquid water that lies from about 7 to 12
miles below the surface. The data apply
only to the region below where theseismometer was deployed, but it may wellapply globally. It is calculated that thevolume of liquid water in this zone, if global,
is more than the volume that is believed tohave filled an ocean on Mars a few billion
years ago. It has long been known thatfrozen water is common much closer to theMartian surface, but the new discovery isdefinitely liquid.
Young Asteroid Surface – About 2 years ago, the DART spacecraft was smashed into asteroid Dimorphos to test
whether that could deflect the orbit of an asteroid, should that become necessary in the future. Further analysis of
DART data showed that the surface of Dimorphos was (before the collision) only 300,000 years old, while thesurface of Didymos (its larger companion asteroid) is about 12.5 million years old. Both asteroids are determined
to be rubble piles rather than solid bodies. Because rubble piles are easier to deflect than solid bodies, the impact
of DART deflected Dimorphos more than had been predicted before the collision. The new analysis showed that
Didymos was likely spun so fast by the action of sunlight that it threw off material that collected to become
Dimorphos. The European Hera mission is scheduled for launch next month to follow up on the effects of the DART
collision when Hera arrives at the two asteroids in late 2026.

3

Impactor Identified – An analysis of material left by the impact of an asteroid 66 million years ago near what isnow called Chicxulub on the Yucatan Peninsula has determined that the asteroid was a carbonaceous chondrite.
This was determined from the relative amounts of isotopes of the rare element ruthenium. The analysis ruled out
the possibility that the impactor was a comet, which some astronomers have previously proposed. Such asteroids(and meteorites of the same composition) formed in the outer Solar System, though they can be found in theasteroid belt today. They are more fragile than stony asteroids. Analyses of other ancient asteroid impacts showed
they were stony asteroids.
Cold Exoplanet Imaged – Of the more than 5000 exoplanets (planets outside our Solar System) known, only
dozens of them have been imaged. Most exoplanets are too dim or appear too close to their star to be imaged.
Another exoplanet, known as Epsilon Indi Ab, has been imaged, this one using the James Webb Space Telescope(JWST), and its temperature was taken also. It is only 35 °F, the coldest exoplanet yet imaged. Epsilon Indi Ab ismuch more massive than Jupiter and is considerably warmer but resembles Jupiter more closely than any otherimaged exoplanets. It is only about 12 light-years away, making it the 12th closest known exoplanet. It orbits a stara little smaller and cooler than our Sun. There had been previous radial velocity evidence that there might be an
exoplanet orbiting this star, which is why JWST was pointed at it. The planet is dimmer than expected at shortwavelengths of infrared, which may mean the planet is cloudy or that certain gases in its atmosphere absorb shortwavelengths. Further observations made with a spectrograph will decide the cause.
Hot Earth-Like Exoplanet – A team of researchers has found an Earth-sized exoplanet, known as TOI-6255, thatorbits its star in just 5.7 hours (its year). Tidal forces from its star distort its shape to about 10% from spherical. It
is calculated that in about 400 million years it will approach its star so closely that tidal forces will begin to tear theplanet apart. The planet is about 1.08 times Earth’s diameter and 1.44 times Earth’s mass. It is about 65 light-years
away. The astronomers hope to study the planet further with JWST observations. For instance, such observations
could tell us if the surface is hot enough to melt rock. Astronomers like to observe a planet being torn apart (though
they won’t wait for this one) because spectroscopic observations of the debris tell us what the interior of the planet
was made of.
Forming Exoplanet – New analysis of archived radio images of the disk surrounding the young star TW Hydrae
shows that an exoplanet with about 4 times the mass of Earth is forming there. The images were taken using the
ALMA radiotelescope array in Chile. The evidence was not the forming planet itself, but outflow shocks, which areproduced during planet formation. These are located at the same radius in the disk as a previously known gap,
which is also evidence for planet formation.
Black Hole Repeatedly Consumes Star – Usually when a star passes too close to a supermassive black hole,tidal forces tear the planet apart and the black hole consumes the pieces entirely. However, such an event thatwas discovered in X-rays in 2018 was found to repeat about 2 years later, implying that the star was only partiallyconsumed and the remainder of it orbited close to the black hole again. The black hole has 50 million times themass of the Sun and is located in a galaxy about 860 million light-years away. Based on the observations of thefirst event, astronomers predicted the second event would end in August 2023, and it did so on time. They thenpredicted the next close approach will begin between May and August of 2025 and will last about 2 years. They
will be watching closely then.
Neutron Stars – An X-ray telescope known as NICER, which is located on the International Space Station, hasbeen measuring the masses and diameters of neutron stars. Because the pressures in the centers of neutron stars
are beyond what can be created in labs, scientists don’t know exactly how neutrons react with increasing pressure,
this reaction known as the equation of state. The NICER measurements will be used to try to pin down this equationof state. The initial results show that it is slightly squishy, which means the neutrons pack only slightly tighter withincreased pressure. This rules out the theories that predict the centers of neutron stars should be very squishy orvery stiff (hardly compress at all). This agrees with implications regarding the equation of state from gravitational
wave measurements made of colliding neutron stars. NICER observations will continue, hoping to pin this down
better than just “slightly squishy”.

4

Wow! Explained – In 1977 the Ohio State
University Big Ear radio telescope received
an unusual and strong signal from thedirection of Sagittarius that became known
as the Wow! Signal. Some people believed
it to be a signal from intelligent aliens. A
new study of archived radio signals from the
now-defunct Arecibo radiotelescope has
found patterns with similar characteristics,
implying the Wow! Signal had a similarcause. The Arecibo signals had beenpreviously identified as being caused by aflare from either a magnetar or a soft
gamma repeater, whose flare light was thenmodified by passing through a hydrogengas cloud. No aliens required for the Wow!
Signal.
Dark Matter – Readers may have seen images of the Bullet Cluster, showing that when two clusters of galaxies
collide, the gas of the galaxies is slowed by friction while most of the mass (as measured by gravitational lensing)is not substantially slowed. This is considered perhaps the most irrefutable evidence that most of the mass of galaxy
clusters is dark matter, which feels only gravity not friction. It happened again: another pair of colliding galaxy
clusters, known as MACS J0018.5+1626, has been discovered where the gas and the other mass have separated
due to friction in the collision. It has been studied by observations from many ground- and space-based telescopes.
However, this pair is oriented with the collision motion towards and away from us rather than across our field ofview and so data on the new discovery showed the separation as differences in speed toward/away from us rather
than differences in location in the field of view.
Gaia Recovers – Gaia, the space telescope that has measured extremely precise locations and motions of morethan a billion stars, has experienced two problems: A micrometeoroid pierced a cover on the telescope (letting straylight in) and a sensor failed. The sensor was not the main imager, but an auxiliary one used to register when thetelescope is pointed directly at a star. Spacecraft controllers reprogrammed the onboard computer and took theopportunity to refocus the telescope, and it is now functioning a little better than when new. Gaia is planned tocontinue to take data for several more years.
Asteroid Moons – A search through Gaia data has found 352 new instances of asteroids that are wobbling likethey are being orbited by a moon. Only about 500 asteroids moons were previously known. Theoretically one inevery 6 asteroids should have a moon, though far less than 1% of asteroids have actually been found to havemoons because asteroid moons are so hard to detect.
NEOWISE Ends – The NEOWISE mission, which for more than 10 years has been discovering asteroids andcomets, particularly ones that pass near Earth, has ended. The reason for ending the mission is that the spacecraft
has dropped in its orbit due to atmospheric friction so far that it is becoming unusable. It is expected to burn up in
the atmosphere before year’s end. The spacecraft was known as WISE when first launched in 2009 and completed
a survey of the entire sky in infrared with far greater sensitivity than previous infrared missions. When the coolant
for its sensors ran out, it was found still to be sensitive enough to detect thousands of asteroids and comets andwas given its new name and mission. NEOWISE’s mission of discovering near-Earth asteroids and comets will betaken over by an even more capable space telescope known as NEO Surveyor, which may launch as soon as 2027.
Small Speeding Star – Citizen scientists working on NASA’s Backyard Worlds: Planet 9 project found an extremely
fast-moving object whose small mass places it in either the very small star or brown dwarf category. It is moving
fast enough, about a million mph, to escape our Milky Way galaxy, and is the smallest known object in this escapeclass. The Backyard Worlds project has volunteers examining archived images from the WISE infrared spacetelescope. Follow up observations found that this fast-moving object is quite low in heavy element content, whichmeans it formed early in the history of the Milky Way, before many generations of stars had created and spreadheavy elements.
5

Boeing Starliner – As was reported here the past two months, the first test flight of a Starliner spacecraft withcrew to ISS in June experienced problems with thruster operation. In order to allow testing of the thrusters before
returning to Earth with its two astronauts (Butch Wilmore and Suni Williams), their originally planned stay at ISSof about a week has been extended. The thrusters are on a spacecraft part that is burned up on reentry, so that is
one reason why the testing while still at ISS was important and took so long. In late August, NASA announced that
because of uncertainties in thruster behavior, even after testing that had been done, it was decided in the interestsof safety to bring the Starliner back to Earth in September without crew, by remote control, and to bring Wilmore
and Williams back on the next scheduled SpaceX crewed flight to ISS, designated Crew-9 Mission. This means
removing two scheduled passengers on Crew-9, leaving 2 seats empty, to be filled by Butch and Suni on the return
flight down. Crew-9 is currently scheduled to launch in September and return to Earth February or March 2025.
Boeing will work to correct thruster problems before the next flight of Starliner. NASA wants to have two methodsof transporting astronauts to and from ISS, but so far only SpaceX vehicles have been certified for this. So, it isimportant to NASA for Starliner to finish certification. It is important to Boeing also, as they have overspent thepayments for development of Starliner and won’t get paid again until they get Starliner certified for regular trips toISS.

Pictures from Nixon Fire Near OCA Anza Site

From Brett Nordby from upper pads, taken about 2 PM.
Fire start was estimated to be just about noon.

From Leon Aslan via his observatory security camera atabout 5 PM.

From Robert Peck via his observatory security camera 3:12
PM

Taken from Menafee by Mark Maiar on afternoon of first day

6

Afterwards

By David Fischer, taken near the Kuhn observatory on 8
August after fire ended

Taken from Upper Pads

From the Editor
The newsletter is open to suggestions for new content to replace the column “Another Look”. We aretrying out a monthly column from NASA which they provide for use in Astronomy club newsletters. It
also appears in newsletters of some other local clubs. Please let the editor know what you think of it.
Due dates for submission of articles, pictures and advertisements

Issue
OctoberNovember
DecemberJanuary 2025

Due date
21 September
19 October
23 November
21 December

7This article is distributed by NASA’s Night Sky Network (NSN).
The NSN program supports astronomy clubs across the USA dedicated to astronomy outreach. Visit
nightsky.jpl.nasa.gov to find local clubs, events, and more!

September’s Night Sky Notes: Marvelous Moons
By Kat Troche

September brings the gas giants Jupiter and Saturn back into view, along with their satellites. And while we organize
celebrations to observe our own Moon this month, be sure to grab a telescope or binoculars to see other moons
within our Solar System! We recommend observing these moons (and planets!) when they are at their highest in
the night sky, to get the best possible unobstructed views.

The More the Merrier
As of September 2024, the ringed planet Saturn has 146 identified moons in its orbit. These celestial bodies range
in size; the smallest being a few hundred feet across, to Titan, the second largest moon in our solar system.

The Saturnian system along with various moons around the planet Saturn: Iapetus, Titan, Enceladus, Rhea, Tethys, andDione. Credit: Stellarium Web

Even at nearly 900 million miles away, Titan can be easily spotted next to Saturn with a 4-inch telescope, underurban and suburban skies, due to its sheer size. With an atmosphere of mostly nitrogen with traces of hydrogenand methane, Titan was briefly explored in 2005 with the Huygens probe as part of the Cassini-Huygens mission,
providing more information about the surface of Titan. NASA’s mission Dragonfly is set to explore the surface ofTitan in the 2030s.

8This mosaic of Saturn's moon Enceladus was createdwith images captured by NASA's Cassini spacecraft on
Oct. 9, 2008, after the spacecraft came within about 16
miles (25 kilometers) of the surface of Enceladus. Credit:
NASA/JPL/Space Science Institute
Saturn’s moon Enceladus was also explored by the
Cassini mission, revealing plumes of ice that erupt frombelow the surface, adding to the brilliance of Saturn’srings. Much like our own Moon, Enceladus remains tidally
locked with Saturn, presenting the same side towards its
host planet at all times.

The Galilean Gang
The King of the Planets might not have the most moons,but four of Jupiter’s 95 moons are definitely the easiest
to see with a small pair of binoculars or a small telescope
because they form a clear line. The Galilean Moons –Ganymede, Callisto, Io, and Europa – were first
discovered in 1610 and they continue to amaze
stargazers across the globe.

9The Jovian system: Europa, Io, Ganymede, and Callisto. Credit: Stellarium Web
•
•
•

•

Ganymede: largest moon in our solar system, and larger than the planet Mercury, Ganymede has its own
magnetic field and a possible saltwater ocean beneath the surface.
Callisto: this heavily cratered moon is the third largest in our solar system. Although Callisto is thefurthest away of the Galilean moons, it only takes 17 days to complete an orbit around Jupiter.
Io: the closest moon and third largest in this system, Io is an extremely active world, due to the push andpull of Jupiter’s gravity. The volcanic activity of this rocky world is so intense that it can be seen fromsome of the largest telescopes here on Earth.
Europa: Jupiter’s smallest moon also happens to be the strongest candidate for a liquid ocean beneaththe surface. NASA’s Europa Clipper is set to launch October 2024 and will determine if this moon has
conditions suitable to support life. Want to learn more? Rewatch the July 2023 Night Sky Network
webinar about Europa Clipper here.

Be sure to celebrate International Observe the Moon Night here on Earth September 14, 2024, leading up to thesuper full moon on September 17th! You can learn more about supermoons in our mid-month article on the NightSky Network page!

Bonus PictureThis is an H-alpha image ofIC5070, the “Pelican” from Bill Hall in 2013 using an 8 inch Newtonian and ST8300 camera.

10Advertisements
Buy, Sell or Trade some of your gear? This is where club members can place advertisements. Please contact the editor at
newsletter@ocastronomers.org to place an advertisement or to learn more about placing one. There is no cost to clubmembers for non-commercial advertisements in the newsletter.
Each advertisement may be run for 3 consecutive issues, after which it will be removed. The advertiser may resubmit it forinclusion after a one-month hiatus.
For Salecontact
Arnie Richards(562) 644-9775 wannawalk52@gmail.com•
Meade 7" LX200 Maksutov-Cassegrain telescope with tripod.
$ 900•
Includes tripod, 9 Plossl eyepieces ranging in focal length from 6 mm to 40 mm; and a full aperture solar filter.
Originally purchased in 2003 for $3500; Excellent optics; Alt-Azimuth fork mount in excellent condition
but GPS tracking program is slow and cranky. My understanding is that there are local (SoCal) experts
who can fix this.
Photos, including sample images, are available upon request. Will deliver to any location within 100 miles of Downey, CA.
For Salecontact
Jerry Floyd
jlfloyd720@gmail.com•
Celestron AVX mount, no tripod
Excellent condition - includes SkySync GPS accessory and 11-pound counterweight$ 450

The buyer can either pick it up at my house in Hemet at their convenience, or I can deliver it inSouthern California at my convenience.
For Salecontact
Vince Laman
lamanvp@aol.com•
Celestron CGX-L mount package. Mount and Tripod. Star Sense AutoAlign, Polar Axis Finderscope
75 lb rating for astrophotography. Higher rating for visual.
All new in box. Never used. Retail value of these items $5300.

$ 2600

These items are local pickup only. If interested send me an email requesting a complete description.
For Salecontact
Marten Seth949-892-7790•
Glass Solar Filter ST425G 4" from Spectrum Telescope.
Inner Diameter 4.25"/108 mm/ clear aperture 3.5
Bought from OPT, never used, in original box.

info@sethfamilyoffice.com$ 50

Located in Laguna Niguel.
For Salecontact
Dave Cook
949-689-0853 cell•
MEADE LX200 GPS, 10-inch diam. mirror•
Includes heavy-duty mount and tripod, 10-inch OTA, Heavy-duty optional equatorial wedge,
115-volt AC to 12-volt power adapter, all normal accessories•
Accessory & eyepiece utility tray, padded soft carrying case, soft dew shield, 1-1/4 90-degree diagonal•Peterson Engineering modifications: ball-bearing focuser mod, precision brass drive gear mod•
Electronic focuser is included.

$2300

This system can be used in either azimuth or equatorial mode. Mount and telescope just returned from Meade factorymechanical/electrical refurbishment and update costing $500+ (still in shipping box from Meade). Current equivalent Meade
LX200, 10-inch GPS, priced new is $5899
Note: This is my favorite telescope, but due to anti-cancer drugs, I no longer have the strength to singlehandedly maneuver
this system.
Wantedcontact
Marten Seth949-892-7790
info@sethfamilyoffice.com•
Losmandy Heavy Duty Tripod (old version or new folding model) or similar, ideally with AP adapter
but not a requirement.
Located in Laguna Niguel.
11

SIRIUSASTRONOMER

www.ocastronomers.org

The Newsletter of the Orange County Astronomers

NEWSLETTER OF THE
ORANGE COUNTY ASTRONOMERS
P.O. BOX 1762
COSTA MESA, CA 92628

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Santa Ana, CA
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Phone 949-266-9777 Starline 24-Hr. Recording: 714-751-6867 Anza Observatory: 951-763-5152
board@ocastronomers.org

BOARD OF DIRECTORS
President
Vice President
Treasurer
Secretary
Trustee
Trustee
Trustee
Trustee
Trustee
Trustee
Trustee

Barbara Toy
Reza AmirArjomand
Charlie Oostdyk
Alan Smallbone
David SearleMark Price
Doug Millar
Sam Saeed
Brett Nordby
Gary Schones
John Hootbtoy@cox.net
reza@ocastronomers.org
charlie@ocastronomers.org
alan@ocastronomers.org
dwsearle@gmail.com
mark@ocastronomers.org
doug@ocastronomers.org
sam@ocastronomers.org
brett@ocastronomers.org
gary378@pacbell.net
jhoot@ssccorp.com

Manuel Baeza
Don Lynn
David Pearson
Steve Mizera
Bob Nanz
Karen Schnable
Charlie Oostdyk
Barbara Toy
Martin Christensen
David Fischer
Rich Cormier
Jake Brown
Jon Montgomery
Reza AmirArjomand

manugb33@yahoo.com
dlynn@ieee.org
p.davidw@yahoo.com
mizeras@cox.net
bob@nanzscience.com
karen@schnabel.net
charlie@ocastronomers.org
btoy@cox.net
outreach@ocastronomers.org
newsletter@ocastronomers.org
social@ocastronomers.org
scopes@ocastronomers.org
56scooter@gmail.com
webmaster@ocastronomers.org

Alan Smallbone
Mark Price
Barbara Toy
Doug Millar

alan@ocastronomers.org
mark@ocastronomers.org
btoy@cox.net
doug@ocastronomers.org

COORDINATORS
Anza House Coordinator
Anza Site Maintenance
Beginner’s Class
Orange County Star Parties
Explore the Stars
LibrarianMembership / Anza Pads
Observatory Custodian / Trainer / Member Liaison
Outreach
Sirius Astronomer Editor
Social Media Coordinator
Telescope Adoption Program
WAA Representative
Webmaster

SPECIAL INTEREST GROUPS (SIGs)
AstroImagers SIG
Astrophysics SIG
Dark Sky SIG
Youth SIG