Tag Archives: Globular Cluster

Apollo Special Part 2! Free Astronomy Magazine – July-August 2019 Issue Available For Reading And Download

Greetings, fellow astrophiles!

The most recent issue of Free Astronomy Magazine (July-August 2019) is available for your reading and downloading pleasure at www.astropublishing.com (click the link to go directly to the issue).

This month features the second of a two-part series in celebration of the 50th anniversary of the Apollo 10 and 11 missions that found us first visiting (10) and then landing (11) on the Moon. As if the gorgeous selection of images for the Apollo article was not enough, the issue includes its usual wonderful selection of NASA/ESA/ALMA astronomy and space science articles.

Free Astronomy Magazine (website, facebook) was featured as the first of a series of articles on great free online content for amateur astronomers (see A Universe Of Free Resources Part 1) and we’ll be keeping track of future publications under the Online Resources category on the CNYO website.

You can find previous Free Astronomy Magazine issues by checking out our Free Astronomy Magazine Category (or look under the Education link in our menu).

For those wanting a quick look at what the issue has to offer, the Table of Contents is reproduced below.


July-August 2019

The web browser-readable version of the issue can be found here:

July-August 2019 – www.astropublishing.com/4FAM2019/

For those who want to jump right to the PDF download (20 MB), Click here:

July-August 2019

“Upstate NY Stargazing In October” Article Posted To newyorkupstate.com And syracuse.com

Greetings, fellow astrophiles!

The latest article in the series, “Upstate NY stargazing in October: Prominent constellations of summer and winter visible on Autumn nights,” has just been posted to newyorkupstate.com and syracuse.com. This month, we look for globular clusters in Hercules, and follow the recent progress of Mars, Saturn, and Venus – all while getting early sights of the very best of winter – Orion, Taurus, and the Pleiades.

Direct Link: newyorkupstate.com/outdoors/2016/10/…nights_offer_some_of_the_best.html

Direct Link: http://www.syracuse.com/outdoors/index.ssf/…nights_offer_some_of_the_best.html

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Caption: This photo, taken by a stationary camera at Mount Megantic National Park in Quebec, captured a fireball that shot over Montreal Wednesday night. The “bolide,” a rock entering Earth’s atmosphere, was seen across the Northeast. The Summer Triangle is shown as a red overlay. (ASTROLab du parc national du Mont-Megantic)

This article also marks the third official mention of our upcoming MOST/TACNY/CNYO hosting of International Observe The Moon Night on Saturday, October 8th. Additional details to follow, but expect the observing to happen somewhere around The MOST itself.

We’ll update the website and social media as we get a better idea on what the weather is supposed to do Saturday night (else we stay inside The MOST the entire time).

CNYO Observing Log: Clark Reservation And Baltimore Woods, 18 July 2015

Greetings fellow astrophiles!

Bob Piekiel and I have continued to make the most of the Summer for hosting observing sessions. While the Sun is good anytime, the Summer Nighttime Sky certainly makes for a worthy complement to our Winter sessions. Instead of crisp, clear (and cold!) conditions and close-ups of some of the most impressive objects in the Nighttime Sky (everything in Orion alone is worth dressing up for), we trade boots for sandals (or less), slap on the bug spray, and scour into the heart of the Milky Way for a host of fine objects to our zenith and points south. As Summer weather is also easier to brave for most, we enjoy larger turnouts and introducing others to the greater outdoors.

Clark Reservation, 18 July 2015, 1 to 3 p.m.

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The Sun from Saturday, 18 July 2015 (from NASA/SOHO)

While the Sun is always busy, those phenomena which causes us to spend beaucoup bucks on equipment were in short supply on the surface that afternoon, with tiny-ish sunspot 2386 the only significant feature to scout around. The presence of Bob’s Coronado H-alpha, He, and CaK scopes did noticeably open up the feature window for some of the more subtle objects.

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Bob and attendees at along his observing array.

The whole session ran a hot two hours. About 15 people made rounds to the scopes, with a few people making second rounds (some to see again, others returning after some of the clouds had moved on for their first viewing). As a true testament to Syracuse weather conditions, we went from blue sky to heavy cloud cover to a quick sprinkle and back to blue sky in a 10 minute window at 2:30.

Baltimore Woods, 18 July 2015, 9 to 11:30 p.m.

Unfavorable conditions Friday night made for a Saturday observing double-feature. We had some hold-over from a Baltimore Woods concert (featuring Joanne Perry and the Unstoppables) that ended at 8:00 p.m. (while it was still far too bright to do any observing. Even the Moon was a tough catch) and a patient wait for, um, one person’s mirror to warm up after a heavily A/C’ed drive from downtown Syracuse.

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Venus and the Moon caught just at the tree line. The elongated view of Venus is not an exposure artifact (1/200th second at that), but is because Venus was, at that time, a medium-thin crescent. Click for a larger view.

The evening turned out excellent for Public Viewing. Venus and the Moon (see above) were an early, close catch due to the high summer tree line (Jupiter was too far below the tree line by the time it was dark enough to be interesting in a scope, although Bob did get one quick view of it earlier after aligning his Celestron Nexstar), after which Saturn, Antares, and Arcturus were the next catches.

Despite a band of slow-moving clouds to the South early on that threatened quite a bit of celestial real estate, the skies cleared nicely for a full 2.5 hours of observing. With a healthy variety of kids and adults in attendance, there was as much discussion as their was observing. A few of the kids in attendance knew just enough to know what they wanted to see, making for a fun game of “stump the scope owner.” My observing list through my New Moon Telescope 12.5 Dob was as follows:

* Saturn – Several times for several waves of attendees, and the Summer and Fall’s highlight planet.

* Albireo in Cygnus – Part 1 of a “test your retinal cones” survey, with everyone able to get at least a little orange and a little blue out of this binary.

* Zubeneschamali in Libra – Part 2 of a “test your retinal cones” survey. Bob, er, found a way to get 100% agreement on the apparent green-ness of this star (a much better percentage than at our Green Lakes session), courtesy of a particular screw-on filter.

* Herschel’s Garnet Star in Cepheus – Part 3 of a “test your retinal cones” survey. The Garnet Star has become a favorite for 2015 viewers, as the dark amber/red color jumps out to everyone (no subtlety, or filters, to be found).

* Alcor and Mizar in Ursa Major – A binaried binary, with one binary itself binary of binaries. Not only do you get to stare at six gravitationally-bound stars, but you get to explain the differences between optical, true, and spectroscopic binaries with a single shining example.

* M57, The Ring Nebula in Lyra – Old amateur astronomers pride themselves in being able to discern all kinds of detail from dim, fuzzy objects. I tend to talk down the impressiveness of some objects to make sure new viewers spend a little extra time pulling detail out (we’re not Hubble, after all). Everyone present for the Ring saw the donut easily at low magnification and were happy to spend extra time giving another, even fainter look at high power (which made for a great part of the whole session in my book).

* M13, The Globular Cluster in Hercules – Second only to Saturn in “woah” moments, M13 never disappoints visually. After you add a little bit about its size and history, several people insisted on taking another, more informed look at it.

* M51, The Whirlpool Galaxy in Canes Venatici (but just-just off the handle of the Big Dipper in Ursa Major) – Just off the last handle star of the Big Dipper. I had one request to see something outside of the Milky Way. With the Andromeda Galaxy in the direction of Marcellus and Syracuse (and the night already getting long for many of the kids in attendance), I tested some eyesights (and imagination) on this faint pair of galactic cores in collision.

* To that list we added one decent shooting star, just enough of the 300 billion other stars in the Milky Way to make out its cloudy band through Cygnus and down to Sagittarius, and one timed Iridium Flare (see below).

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An 11:09 p.m. Iridium Flare caught below the bright star Arcturus (for the record, caught at its brighest first, so the satellite is going from the left to the right in the image). Click for a larger view.

August has rapidly become a busy month for observing, with several sessions planned around the Perseid Meteor Shower. Keep track of the website for whether/weather announcements. We hope you can join us!

CNYO Observing Log: Clark Reservation State Park, 29 August 2014

Greetings fellow astrophiles,

Central New York is a reasonably reasonable place for the reasonably active amateur astronomer. A 10 minute drive away from the center of downtown Syracuse puts one far enough away from enough of the city lights to make bright clusters and galaxies visible, although not necessarily impressive. A 15 to 25 minute drive in the right direction provides skies dark enough to keep any keen amateur occupied for a long evening of Messiers. Those willing to meander their way through a 40 to 50 minute excursion can find some tremendously dark skies fit for subtle NGCs and non-CCD comets. And those of us who host sessions along the Creekwalk know it’s perfectly reasonable for the Moon, Sun, and bright planets (and, if the big globular clusters aren’t out, not much else).

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First setup at Clark Reservation. Click for a larger view.

Clark Reservation State Park leans very much in the near-downtown category, lying about 10 minutes to the Southwest of the Salt City. A two-hour session hosted by Bob Piekiel and assisted by Christopher Schuck and myself revealed Clark Res to be a great harbor for new amateur astronomers wanting to get their feet wet but not ready to be thrown eyepiece-first into the deep abyss offered by Dark Sky locations. Bright constellations are obvious, the planets jump right out, the crescent Moon is a busy structure of mountains and valleys, and the brightest Messier objects are “obvious” to observers looking through the eyepiece, all while the sky is streaked by bright shooting stars and crisscrossed by satellites too numerous to keep track of.

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Summer Triangle panorama. Click for a larger view.

Setup commenced around 7:00 p.m. with Bob, Chris, and I initially spaced in an equilateral-ish triangle to try to maximize the amount of “different” observables. The clear field just west of the main parking lot offered a remarkably open view of the sky, with several large clearings between trees to really let one get low to the horizon for last-look viewing. My initial proposal to Chris to catch the Moon, Saturn, and Mars between one of these South-most clearings seemed reasonable until we stepped over to Bob’s East-most setup – a change of only 50 feet completely opened up the Western Sky. What started as a Summer Triangle then turned into Triangulum, leaving me with dominion over the Eastern Sky and all of the constellations and Messiers Autumn will offer at our zenith.

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Maybe a 4? The light pollution from Clark Res (lower number = better). For Deep Sky objects, not good. For learning the major constellations, not bad. From stellarium.org.

Despite the brightness of Syracuse (and some of the Clark Res safety lights), the sky wasn’t “that bad.” It was certainly a great starting point for new observers who’d only ever recognized the Big Dipper in the late-Summer sky. It was very easy to point out – then reinforce – the Big Dipper, Little Dipper, Pegasus, Cygnus, Lyra, Cassiopeia, the Summer Triangle, and Hercules. The Messiers through my scope were limited to M13, M57 (which was a stretch for the newbies, no doubt about it), and M31/M32 (which, despite the location, looked excellent in a 26mm Nagler), leaving Saturn, Mars, and the Moon to Bob and Chris – this on account of a good-sized group (about 20) who kept in constant rotation between our three scopes. We did have ourselves a prominent Iridium Flare, 6 confirmed meteors, and a host of satellites (which made a few people’s day).

Final pack-up started a little before 10 p.m., requiring bright flashlights and small mops (was quite a damp evening). All in all, Clark Reservation is a good spot for those who want to get their bearings without having to drive too far from home (a nice starter spot for that 10-minute range), and I found myself spending more time with a green laser pointer and some mythology than I did looking through the eyepiece. Attendees didn’t seem to mind, and we all got home by bedtime.

NASA Space Place – Surprising Young Stars In The Oldest Places In The Universe

Poster’s Note: One of the many under-appreciated aspects of NASA is the extent to which it publishes quality science content for children and Ph.D.’s alike. NASA Space Place has been providing general audience articles for quite some time that are freely available for download and republishing. Your tax dollars help promote science! The following article was provided for reprinting in January, 2014.

By Dr. Ethan Siegel

2013february2_spaceplaceLittered among the stars in our night sky are the famed deep-sky objects. These range from extended spiral and elliptical galaxies millions or even billions of light years away to the star clusters, nebulae, and stellar remnants strewn throughout our own galaxy. But there’s an intermediate class of objects, too: the globular star clusters, self-contained clusters of stars found in spherically-distributed halos around each galaxy.

Back before there were any stars or galaxies in the universe, it was an expanding, cooling sea of matter and radiation containing regions where the matter was slightly more dense in some places than others. While gravity worked to pull more and more matter into these places, the pressure from radiation pushed back, preventing the gravitational collapse of gas clouds below a certain mass. In the young universe, this meant no clouds smaller than around a few hundred thousand times the mass of our Sun could collapse. This coincides with a globular cluster’s typical mass, and their stars are some of the oldest in the universe!

These compact, spherical collections of stars are all less than 100 light-years in radius, but typically have around 100,000 stars inside them, making them nearly 100 times denser than our neighborhood of the Milky Way! The vast majority of globular clusters have extremely few heavy elements (heavier than helium), as little as 1% of what we find in our Sun. There’s a good reason for this: our Sun is only 4.5 billion years old and has seen many generations of stars live-and-die, while globular clusters (and the stars inside of them) are often over 13 billion years old, or more than 90% the age of the universe! When you look inside one of these cosmic collections, you’re looking at some of the oldest stellar swarms in the known universe.

Yet when you look at a high-resolution image of these relics from the early universe, you’ll find a sprinkling of hot, massive, apparently young blue stars! Is there a stellar fountain of youth inside? Kind of! These massive stellar swarms are so dense — especially towards the center — that mergers, mass siphoning and collisions between stars are quite common. When two long-lived, low-mass stars interact in these ways, they produce a hotter, bluer star that will be much shorter lived, known as a blue straggler star. First discovered by Allan Sandage in 1953, these young-looking stars arise thanks to stellar cannibalism. So enjoy the brightest and bluest stars in these globular clusters, found right alongside the oldest known stars in the universe!

Learn about a recent globular cluster discovery here: www.nasa.gov/press/2013/september/hubble-uncovers-largest-known-group-of-star-clusters-clues-to-dark-matter.

Kids can learn more about how stars work by listening to The Space Place’s own Dr. Marc: spaceplace.nasa.gov/podcasts/en/#stars.

This article was provided by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.

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Caption: Globular Cluster NGC 6397. Credit: ESA & Francesco Ferraro (Bologna Astronomical Observatory) / NASA, Hubble Space Telescope, WFPC2.

About NASA Space Place

The goal of the NASA Space Place is “to inform, inspire, and involve children in the excitement of science, technology, and space exploration.” More information is available at their website: http://spaceplace.nasa.gov/