Space-Navigating the Spring Sky
Something that I like to think I was always aware of on some level but never thought too much about until I started backyard starfucking is the fact that the sky changes over the course of the year. As such, after the recent extended bad weather cleared up and I decided to take to the skies once more, I saw that my familiar winter sky had given way to a brand new spring sky.
Throughout winter, Orion dominated the sky, looming overhead and acting as a sort of compass toward the other major sky-landmarks. Once I spotted Orion it was generally a simple matter to find the nearby constellations of Taurus and Gemini, and Orion’s imaginary arrow points at the Pleides, which were almost always directly overhead.
Last night I decided to explore the spring sky and see if I could make some new dot-and-line friends. To help me on my adventure I brought along my Space Navigator, a Christmas gift from my inlaws. This device is basically a hand-held version of the onboard computer on my first telescope, except that it actually functions properly. The operation is sort of difficult to explain, but basically, you punch in your longitude, latitude, date, and time, and it knows what’s in your sky. It gives you a list of visible objects and then helps you find them through a combination of text and interchangeable star maps.
What’s even niftier to my mind is the fact that the Space Navigator also performs this function in reverse. If you tell it what direction you’re facing and how high in the sky you’re looking, it can tell you what you’re looking at. Or, more precisely, it will tell you what map to look at to find what you’re looking at.
So, with the help of the Space Navigator, I discovered a few things about the spring sky in my neck of the woods. First, there were a few things I was able to figure out on my own — Orion (and his friends) are now hanging lower in the sky than they were a few months ago, and I could barely find the damn Pleiades (this was due mainly to light pollution and moisture in the air, but still striking — when the seven sisters were directly overhead they were often immune from these effects closer to the horizon). Also, Ursa Major (the Big Dipper) has been clearly visible in the northern sky for several weeks.
In addition to these two, admittedly pretty easy to spot and recognize, constellations, I found that Leo has taken over Orion’s post as the dominant figure overhead, while Auriga is also making quite an appearance. Right near Auriga is Camelopardalis, the Space Giraffe (seriously, follow the link), which I think should be designated the official imaginary sky object of the Heuristic Squelch. Other constellations that I don’t have the energy to link to were Lynx, Perseus (both near Auriga), and Virgo. Sirius is still the brightest star in the sky but it was so close to the horizon that I didn’t immediately recognize it.
Also, continuing the saga of my quest to find Andromeda, I had high hopes that the Space Navigator would be my key to trapping the elusive galaxy once and for all, since in addition to stars and planets the Space Navigator has a full database of deep space objects. Unfortanately the deep space objects are listed only by number, not name, and my dumb ass didn’t know that Andromeda is M31. Next time, perhaps.
Posted by hb at 10:58 PM | Comments (0)
No Yodeling on Mars
Bad Astronomy Blog is reporting on a nifty image fromHiRISE: An action shot from Mars, showing an avalanche in progress. I concur with BAB that this is, indeed, very cool. Our fellow dumb planets aren’t just inert lumps of rock — they have their own sounds, smells, accelerations due to gravities, good days, and bad days. It’s just strange to think that no one is experiencing these things in person on a day to day basis.
Posted by hb at 03:50 PM | Comments (0)
Blood Moon
In response to Michele’s comment from the previous post, I did do some nominal eyeballing of the lunar eclipse the other night, but nothing major given the uncooperative weather.
I caught a glimpse of the red moon peeking over a cloud mass as I got on the freeway coming home from work. It looked really cool, but it was behind me for the duration of the drive home so I didn’t get a chance to look at it. By the time I got home it was just a faint red glow behind the cloud cover.
Dr. M and I went out to dinner, and on our way back the red moon was clearly visible, though the clouds were returning by the time we got home. I lingered outside wondering if I should set up the telescope, and at the moment the thought occurred to me a cloudy mist started forming in front of the moon, as if to tell me to go back inside and play on the Internet instead. And so I did.
There are, of course, tons of cool pictures of the eclipse available online, including this one from APOD in which the moon is shown with two of its sky-friends.
Posted by hb at 10:52 AM | Comments (1)