June 28, 2017

21.9.9: The Autumnal Equinox.

A celestial alignment; in a neigborhood near you? (Credit: Art Explosion).

A celestial alignment; coming to a neighborhood near you? (Credit: Art Explosion).

Can you feel it? The brunt of northern hemisphere summer is about over, giving  way to our favorite season here at Astroguyz; Fall. It’s not just our collective imagination; this Tuesday marks the Autumnal Equinox, or the spring (vernal) Equinox for those down under. This marks the mid way point for the Sun’s apparent journey form north to south, and the beginning of spring and fall, respectively. Of course, we’re the ones in motion!To be technical, this is the point that the Sun rests at 180 degrees along the ecliptic, and at a right ascension of 12 hours and a declination of exactly 0. This occurs this year at precisely 21:18 hours Universal Time on Tuesday, September 22nd. The Sun will rise exactly due east from your locale and set due west, our personal favorite observation to make on this day (weather willing) to site any potential local “Stonehenge” alignments. [Read more...]

7.9.09: The September Perseids…an Encore?

   This weeks’ potential astro-event is a total wild card. Last year, automated all-sky cameras and the few dedicated observers that maintained a lone early AM vigil noted a sharp upswing in a previously unknown meteor shower. Informally dubbed the “September Perseids,” this shower appeared to have a brief peak over North America on September 9th and spawned a flurry several bright fireballs over a span of about four hours. The progenitor comet remains a mystery, as does much about this shower…could a new meteor stream be evolving? The only way to know for sure is to watch! [Read more...]

Astro-event for September 22rd-29th, 2008; An Autumnal Equinox.

Brace yourselves; the Northern Hemisphere is headed towards Fall!

I know, an equinox may not be the sexiest thing to observe, but its onset has deep significance for those positioned in the northern hemisphere. [Read more...]

Astro-Event of the Week: September 2nd-8th 2008; A Double Shadow Transit!

Double Transit.

Jupiter; The Evening of September 7, 2008, 8:30 PM EDT.

(Credit: Stellarium). 

   The Jovian system of moons is a place where things happen. Shadow transits are probably the most dramatic event to be seen in this “mini solar system.” It’s definitely cool to watch the inky black dot shadow of a moon sliding silently above the cloud tops of Jupiter. [Read more...]