Above: The quasar J043947.08+163415.7 (red) is extremely far away, and its light has been amplified by an intervening galaxy (blue) much closer to Earth. Credit: NASA, ESA, and X. Fan (University of Arizona)
The March-April 2019 issue of Free Astronomy Magazine is available for your reading and downloading pleasure.
To the several NASA and ESA highlights included in this bi-month’s issue (including a wonderful collection of Spirit and Opportunity images in celebration of Opportunity’s recent end-of-mission status announcement), Michele Ferrara has managed to both (a) make you hopeful about our future as a science-spreading civilization in the galaxy and (b) remind you how far we have to go here on Earth to improve our appreciation of that same galaxy. Hopefully, the Genesis Project (no, not really that one (but sort-of). This other one – besides this issue, see phys.org and universetoday.com) and Orbital Advertising (not going to dignify it with additional links) articles give you deep – and different – pause.
Please download, read, and pass along. Also, check out the many back issues at www.astropublishing.com
astropublishing.com/2FAM2019/ | Direct PDF
Click the Table of Contents image below for a full-size view.
Above: Marius Hills and a Hole in the Moon. Image Credit: NASA, Lunar Orbiter 2; Inset: Lunar Reconnaissance Orbiter.
I am very pleased to mark my new editing contributions to the English-language version of Free Astronomy Magazine, starting with the current May-June 2018 issue. This new role was made possible by Michele Ferrara, Editor-in-Chief of the free and multi-language astronomy magazine that I have been very happily promoting on the CNYO site for several years now – and that I now get to promote here and on the CNYO site with my NASA Solar System Ambassador hat on. A combination of space agency publications (all the heavy hitters – NASA, ESA, ESO, ALMA, and Keck, among others) and original content, FAM has been a wonderful resource for those wanting to take a step beyond observation and into hard science and the many missions that make cutting-edge astronomy and astrophysics possible. It’s not only convenient to have a number of significant articles combined into a single magazine, but the inclusion of informative images and a great layout makes the download and read a no-brainer.
The process started in early April of figuring out what it meant to be providing a bit of translating and editing skills for both the text and the scientific content – that it, it not only has to be correct, you have to make sure it’s right as well (let that sink in!). And the timing could not have been better (although that wasn’t known until later in April).
Finally, it’s a wonderful thing to be able to combine science outreach (which I very much enjoy) with an established brand that is doing more than its share to make astronomy and space science accessible to a considerable part of the global population (we’re talking bimonthly magazines translated into English, Spanish, French, Italian, and Portuguese, with requests for additional translations into other languages scrolling on the main page).
The Table Of Contents for the May-June 2018 issue is reproduced below. Follow links below to the on-screen PDF and downloadable versions. If you enjoy it, please forward along the links and astropublishing.com site.
As first appeared in the June 2012 edition of the Syracuse Astronomical Society newsletter The Astronomical Chronicle.
Image generated with Starry Night Pro 6.
We continue our presentation of CNY circumpolar constellations with a relative newcomer to the great list of 88 constellations (in Western Culture, anyway). Camelopardalis the Giraffe is lucky to be identified as a constellation at all, as neither the Greeks nor the Romans saw this part of the sky as interesting enough to, dare I say, stick their necks out and define the stars here as anything of importance. Its Western history dates to approximately 1612, when the famed Dutch astronomer and cartographer Petrus Plancius (who also provided us with Monoceros, another recent constellation in the Northern Hemisphere) grouped the stars with the name Camelopardalis which, loosely translated, breaks down into “camel” and “leopard,” the combinations of “long neck” and “spots” being a reasonable first approximation to the features of an animal most of Europe had likely never seen at the time. The Chinese and Indian astronomers, on the other hand, were far more meticulous in their use and definition of stars in the Night Sky and the brighter stars in Camelopardalis are all defined in one asterism or another. The positions are obviously the same, but the history and mythology of the stars in Camelopardalis are markedly different.
Referring back to the main image in my first article on circumpolar constellations (Ursa Minor, Jan/Feb/Mar 2012, above), that vast majority of Camelopardalis lies above the Northern Horizon, with its head region tightly packed between the boundaries of Draco and Ursa Minor. I’ve seen several stick figure representations of Camelopardalis that attempt to depict only the legs (from the brightest stars in the constellation), only the legs and torso (by cutting Camelopardalis off at the knees and connecting these two starts to make a body), only the legs and half the neck (using bright stars again), the legs and full neck (getting a head in there as well), and the full-on head-neck-torso-short-leg variation that looks most like a giraffe but, likely, deviates most from classical definitions. The correct line drawing for you is, of course, the one that helps you identify the constellation easiest.
During the June mid-evenings, Camelopardalis is oriented with its feet standing firmly on the Northern Horizon (perhaps with its legs obscured behind tall trees that serve as celestial underbrush during our observing sessions). With no star brighter than 4th magnitude and most in the 4th to 5th range, one does have to work a bit harder than usual to mark out the legs and torso of Camelopardalis from Darling Hill, as the electromagnetic diaspora emanating from Syracuse consumes an ever-increasing expanse of the Northern Sky (a solution, then, is to simply observe from somewhere comfortably North of Syracuse!). As you check for the neck, consider the head of Camelopardalis reaching for the bowl of the Big Dipper. The brightest star near where the head would be, the appropriately named “HIP47193,” will sit just to the left of Polaris for your early-night June observing.
Neither the Greeks, nor the Romans, nor most any Western Culture, nor Charles Messier or his assistant Pierre MÃ©chain found anything of importance to amateur astronomers among the stars we know as Camelopardalis. It took until the 18th century for William Herschel to identify an object worthy of cataloguing in the forms of the sort-of elliptical/sort-of spiral galaxy NGC 2403 (shown above, from Hubble). We now know that this region of the sky contains many interesting, but faint, observables, some of which lie within the Milky Way (such as the planetary nebula NGC 1501 and the open cluster NGC 1502) and many which lie far, far beyond, all likely visible only because they lie away from the galactic plane of the Milky Way (and, therefore, are identifiable because they are in a relatively barren stellar savannah that doesn’t obscure our view). Among these are NGC 2655, IC 342 (shown below in infrared from NASA WISE), and NGC 1569 (all exceptionally tough targets due to Syracuse light pollution).
– Happy Hunting, Damian