Tag Archives: Hydra

CNYO Observing Log: Friends Of Rogers, 8 August 2015

Greetings, fellow astrophiles!

“It goes to show you never can tell.” – Chuck Berry

As of 10 a.m. On Saturday, August 8th, it was pretty clear that the late evening and early night time sky wasn’t going to be. The usual complement of forecast websites and Clear Sky Clock all indicated that the night was going to go from Mostly Cloudy to Partly Cloudy after midnight. A generally bad sign for amateur astronomers on both counts:

1. There would likely be enough cloud cover to distract from observing

2. There would likely be just enough clear sky to make you regret setting up the scope

Our Friends of Rogers (FoR) session in Sherburne was scheduled as an Observing-Only event. If the sky was completely overcast, there likely wouldn’t have been any confusion as to what wasn’t going to happen that evening. The forecast of Mostly Cloudy, coupled with (1) a one-hour drive for most of us from here to there, and (2) FoR having done plenty of advertising for the event but not having an RSVP list or any way to contact people that the session wasn’t going to happen, made for a small conundrum.

For those not in the know (from the Friends of Rogers website)…

Operated and run by Friends of Rogers as a non-profit to provide outstanding educational opportunities that excite, inspire, and motivate people of all ages to enjoy, understand, and protect our natural environment.

FoR is a beautiful facility and grounds pocketed away in Sherburne, NY. Similar to our more local Beaver Lake Nature Center. The place includes lecture facilities, equipment rentals, plenty of walking space, summer classes of varied kinds for kids (for which we may host an astro-specific event next summer), and a very friendly staff (frankly, it isn’t often that staff is still ready for more at 11:00 p.m. at many of the placed we hold sessions).

The solution was for our Observing event to be announced as cancelled, but I’d head down anyway to provide some kind of indoor astronomical program for anyone who showed. I arrived around 7:40 p.m. to three staff and one visitor, followed soon by a half-dozen more attendees. With my honest-ta-goodness-totally-legit Mars and Ceres rocks and various meteor fragments and consequence pieces (desert glass, tektites, etc. I’ve also promoted Kopernik’s own Patrick Manley’s daughter’s discovery to near-legendary status in these parts) in tow, plus a 30-or-so minute lecture on 2015 Astronomy Highlights, we ended up having a two hour discussion indoors before stepping outside to talk a little bit about finding prominent constellations, navigating the circumpolar constellations, orienting ourselves in preparation for the Perseid Meteor Shower peaking this week, and then observing a total of 30 stars in the same single 26mm Nagler field of view through my NMT 12.5” Dob and the Lagoon and Trifid Nebulae through one attending’s pair of binoculars.


The little teapot, short and stout, in the body of Sagittarius.


Pluto, threading the 4/5 mag. needle at the tip of the teaspoon (the “needle” stars are easy in low-power binoculars. Pluto, not so much). Click the image for a larger view.

That set of 30 stars in the same field of view was crystal clear for a few minutes, and fortuitous given the lecture content. With a clear shot of the handle of the Teapot that is the body of Sagittarius, you can find your way to the teaspoon (well, to me, anyway) just above and to the left of the handle. The end star of the teaspoon is actually 2 stars, one a pure white (ksi 1) and the second a deeper orange/red (ksi 2, with a small companion off to one side). As it so happens, Pluto is threading the needle hole at the moment right between those two stars (see the image below).

While none of us actually “saw” Pluto given the conditions (and that would be a Herculean effort in a 12.5” Scope with a few surrounding lights), we all did have more than a few photons from Pluto, Charon, Kerberos, Nix, Hydra, and Styx, hit our retinas (technically, even a few from the New Horizons spacecraft itself. Isn’t statistics wonderful!).

The lesson learned for any and all future sessions (provided no rain) are as follows:

1. Always be prepared to say something (handing people a piece of another planet and/or dwarf planet makes that pretty easy).

2. An attending registry can be very helpful. In CNYO’s case, we’re going to make sure that our Facebook and Meetup events list are always up-to-date.

And, with that, we await what the weather holds for this coming week’s Perseid Meteor Shower. If it’s clear, several of us will be out most of the week hoping to spot a few at local parks. See our official announcement post for details. We hope to see you!

NASA News Digest: Space Science For 12 May – 4 June 2015

Greetings fellow astrophiles,

The NASA News service provides up-to-date announcements of NASA policy, news events, and space science. A recent selection of space science articles are provided below, including direct links to the full announcements. Those interested in receiving these news announcements directly from NASA can subscribe to their service by sending an email to:


NASA’s Chandra X-Ray Observatory Celebrates 15th Anniversary

RELEASE 15-088 (Click here for the full article) – 12 May 2015

2015june4_15_088aNASA laboratory experiments suggest the dark material coating some geological features of Jupiter’s moon Europa is likely sea salt from a subsurface ocean, discolored by exposure to radiation. The presence of sea salt on Europa’s surface suggests the ocean is interacting with its rocky seafloor — an important consideration in determining whether the icy moon could support life.

The study is accepted for publication in the journal Geophysical Research Letters and is available online.

“We have many questions about Europa, the most important and most difficult to answer being is there life? Research like this is important because it focuses on questions we can definitively answer, like whether or not Europa is inhabitable,” said Curt Niebur, Outer Planets Program scientist at NASA Headquarters in Washington. “Once we have those answers, we can tackle the bigger question about life in the ocean beneath Europa’s ice shell.”

For more information about Europa, visit: europa.jpl.nasa.gov

NASA Study Shows Antarctica’s Larsen B Ice Shelf Nearing Its Final Act

RELEASE 15-092 (Click here for the full article) – 14 May 2015

2015june4_15_092A new NASA study finds the last remaining section of Antarctica’s Larsen B Ice Shelf, which partially collapsed in 2002, is quickly weakening and likely to disintegrate completely before the end of the decade.

A team led by Ala Khazendar of NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, found the remnant of the Larsen B Ice Shelf is flowing faster, becoming increasingly fragmented and developing large cracks. Two of its tributary glaciers also are flowing faster and thinning rapidly.

“These are warning signs that the remnant is disintegrating,” Khazendar said. “Although it’s fascinating scientifically to have a front-row seat to watch the ice shelf becoming unstable and breaking up, it’s bad news for our planet. This ice shelf has existed for at least 10,000 years, and soon it will be gone.”

The research team included scientists from JPL, the University of California, Irvine, and the University Centre in Svalbard, Norway. The paper is online at: go.nasa.gov/1bbpfsC

NASA uses the vantage point of space to increase our understanding of our home planet, improve lives and safeguard our future. NASA develops new ways to observe and study Earth’s interconnected natural systems with long-term data records. The agency freely shares this unique knowledge and works with institutions around the world to gain new insights into how our planet is changing.

For more information about NASA’s Earth science activities, visit: www.nasa.gov/earth

NASA’s WISE Spacecraft Discovers Most Luminous Galaxy in Universe

RELEASE 15-095 (Click here for the full article) – 21 May 2015

2015june4_wise_j224607.57-052635.0A remote galaxy shining with the light of more than 300 trillion suns has been discovered using data from NASA’s Wide-field Infrared Survey Explorer (WISE). The galaxy is the most luminous galaxy found to date and belongs to a new class of objects recently discovered by WISE — extremely luminous infrared galaxies, or ELIRGs.

“We are looking at a very intense phase of galaxy evolution,” said Chao-Wei Tsai of NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, lead author of a new report appearing in the May 22 issue of The Astrophysical Journal. “This dazzling light may be from the main growth spurt of the galaxy’s black hole.”

The brilliant galaxy, known as WISE J224607.57-052635.0, may have a behemoth black hole at its belly, gorging itself on gas. Supermassive black holes draw gas and matter into a disk around them, heating the disk to roaring temperatures of millions of degrees and blasting out high-energy, visible, ultraviolet, and X-ray light. The light is blocked by surrounding cocoons of dust. As the dust heats up, it radiates infrared light.

For more information on WISE, visit: www.nasa.gov/wise

Actor Jon Cryer Voices New NASA Film to Help Celebrate 50 Years of Spacewalks

RELEASE 15-086 (Click here for the full article) – 29 May 2015

On June 3, 1965, NASA astronaut Ed White became the first American to walk in space. NASA is celebrating the 50th anniversary of the United States’ first extravehicular activity (EVA) — better known as a spacewalk — through a number of commemorative features on NASA Television and NASA.gov.

On Monday, June 1, NASA will premiere a documentary narrated by actor Jon Cryer on the history and future of humans working on a tether in space. The film, Suit Up, marks five decades of spacewalks and will air on NASA Television starting at 10 a.m. EDT, and be available on the agency’s website and YouTube account.

The documentary features interviews with NASA Administrator and astronaut, Charles Bolden, NASA Deputy Administrator and spacesuit designer, Dava Newman, as well as other astronauts, engineers, technicians, managers and luminaries of spacewalk history. They share their personal stories that cover the full EVA experience– from spacesuit manufacturing to spacewalk maneuvering — all brought to life through historical and HD footage.

For NASA TV streaming video, schedules and downlink information, visit: www.nasa.gov/nasatv

NASA’s Hubble Finds Pluto’s Moons Tumbling in Absolute Chaos

RELEASE 15-111 (Click here for the full article) – 3 June 2015

2015june4_15_111cIf you lived on one of Pluto’s moons, you might have a hard time determining when, or from which direction, the sun will rise each day. Comprehensive analysis of data from NASA’s Hubble Space Telescope shows that two of Pluto’s moons, Nix and Hydra, wobble unpredictably.

“Hubble has provided a new view of Pluto and its moons revealing a cosmic dance with a chaotic rhythm,” said John Grunsfeld, associate administrator of NASA’s Science Mission Directorate in Washington. “When the New Horizons spacecraft flies through the Pluto system in July we’ll get a chance to see what these moons look like up close and personal.”

The moons wobble because they’re embedded in a gravitational field that shifts constantly. This shift is created by the double planet system of Pluto and Charon as they whirl about each other. Pluto and Charon are called a double planet because they share a common center of gravity located in the space between the bodies. Their variable gravitational field sends the smaller moons tumbling erratically. The effect is strengthened by the football-like, rather than spherical, shape of the moons. Scientists believe it’s likely Pluto’s other two moons, Kerberos and Styx, are in a similar situation.

For images and more information about Hubble, visit: www.nasa.gov/hubble and hubblesite.org/news/2015/24

AAVSO Writer’s Bureau Digest For 22 April 2014

2013dec20_aavso_logoThe AAVSO Writer’s Bureau, hosted by the American Association of Variable Star Observers (www.aavso.org), is a selective aggregator of high-quality science content for the amateur astronomer. Several astronomy bloggers, science writers, and official astronomy publishers and organizations provide articles free-of-charge for redistribution through the AAVSO-WB. The five most recent Writer’s Bureau posts are presented below with direct links to the full articles on the author’s own website. CNYO thanks the authors and the AAVSO for making these articles available for free to all astronomy groups!

Starbirth in the Neighborhood

C.C. Petersen, The Spacewriter

2014april22__5_M83Galaxies are huge collections of stars, gas, dust, black holes, and planets. The Milky Way is a good example of a spiral galaxy. It also happens to have a bar of gas and dust and stars across its center, and many places where stars are being born. It turns that when astronomers look at other galaxies, particular spiral galaxies (and many colliding galaxies), they also see regions of starbirth.

Hubble Space Telescope has been astronomy’s “go to” machine in space when astronomers want to look at something like a distant galaxy. This Hubble image shows the pinwheel (spiral) galaxy M83, which lies in our southern hemisphere skies in the constellation Hydra. It’s about 15 million light-years away, and, as you can see here, is ablaze with starbirth regions spread across 50,000 light-years of space.

Read the full article at: thespacewriter.com/wp/2014/01/26/starbirth-in-the-neighborhood/

A Cosmic Bubble That’ll Soon Pop. Hard.

Phil Plait, slate.com

2014april22__4_jeffhusted_sharpless2_308Sometimes, I’m pretty happy our planet circles a relatively calm, normal star. Because when I look at stars like EZ Canis Majoris (aka WR 6, HR 2583, HD 50896, and other aliases), I think that things around here could be a lot less conducive for life.

Why? Because this:

Pretty, isn’t it? But the beauty belies a true monster.

This photo was taken by Jeff Husted, an astrophotographer who observers in the western US. It shows the star EZ CMa (for short), the star just left of center of that ethereal glowing bubble of gas. It’s what’s called a Wolf-Rayet star, one of the more terrifying beasts in the galaxy’s menagerie. It’s a star that started out life with more than 40 times the mass of the Sun, which made it super-hot and extraordinarily luminous. Stars like that can be hundreds of thousands of times as bright as the Sun! A planet orbiting it as close as the Earth to the Sun would be cooked to a vapor pretty rapidly.

Read the full article at: www.slate.com/blogs/…cosmic_bubble_from_a_galactic_monster.html

The Final Countdown Before a Supernova

Phil Plait, slate.com

2014april22__3_hst_sbw1I’m sometimes asked what I think the next exploding star in our galaxy will be. Most people expect I’ll say Betelgeuse, the red supergiant marking Orion’s right shoulder.

But Betelgeuse may not go supernova for another million years, which is a long, long time. There are several stars much closer to The End, and I recently learned of a new one: SBW1.

The star is a blue supergiant, a hot, energetic beast probably about 20 or so times the mass of the Sun. Stars like that don’t live long, just a few million years tops. But we know (we think) it’ll explode much sooner than that, because of that ring you see in the Hubble picture above. How does that ring tell us anything? Ah, glad you asked.

Read the full article at: www.slate.com/blogs/…/sbw1_a_star_on_the_verge_of_supernova.html

A Superluminous Supernova

CfA News, Harvard

2014april22__2_su201401Supernovae are the explosive deaths of massive stars. Among the most momentous events in the cosmos, they disburse into space all of the chemical elements that were produced inside their progenitor stars, including most of the elements essential for making planets and life. Astronomers have recognized for decades that there are several different kinds of supernovae, most fundamentally those that originate from a single massive star and those that develop when one member of a pair of binary stars becomes massive by feeding on its neighbor. Other factors like the stellar composition also come into account. Sorting out all these various complications is critical if astronomers want to be able to reliably classify any particular supernovae and thereby infer its intrinsic brightness, and then use its observed brightness as a measure of its distance.

Recent wide-field surveys searching for supernovae have found that the conventional schema for classifying supernovae may be even more complicated than previously thought. A few years ago a new class called superluminous supernovae was found, characterized by their emitting total radiated energies equal to about ten billion suns shining for a year. Some of these new objects were discovered at cosmological distances, helping to cement the notion that new types were being discovered, and further studies have found even more subdivisions, also based among other things on composition. These new superluminous supernovae can be identified and characterized by the particular way their light fades away after the brightness peak, driven in part by the radioactive decay of elements manufactured in the explosions.

Read the full article at: www.cfa.harvard.edu/news/su201401

New Cutoff For Star Sizes

John Bochanski, Sky & Telescope

2014april22__1_Brown_DwarfAstronomers have found a gap between “real” and “failed” stars.

What does the smallest star look like? This question is deceptively difficult to answer. Stars spend most of their lives fusing hydrogen in their cores, a prime time of life called the “main sequence.” As you go down the scale of stellar sizes on this sequence, stars become dimmer, cooler, and less massive. But determining the absolute properties of the smallest stars — their mass, radius, temperature, and overall light output — is challenging for at least three big reasons.

Read the full article at: www.skyandtelescope.com/astronomy-news/new-cutoff-for-star-sizes/