Wow what an interesting past few days its been. I got to see the eclipse! Unfortunately I didn’t get to experience its full grandeur. My spot in Nebraska had persistent cloud issues and the very moment of totality a swath of low level clouds moved over the sun. Yes nearly the exact moment. Unbelievable. I saw the hole in the sky for just a few seconds. There was never a chance I’d see the sun’s corona in its full glory.
I have very mixed emotions as I write this tonight.
Happy experienced the approach of totality, the sun and moon slowly converging. The sudden darkness that fell as totality started and the surreal twilight like horizon all around me. The perceived shortness of the event (what! two and a half minutes can’t have just passed!).
Yet I’m also a bit sad I didn’t get to experience the complete spectacle, the sight of an eclipsed sun in a clear dark sky. I didn’t get to see the corona in its full glory nor any planets appear.
It will take me awhile to get over this. Seven years until the next American eclipse.
Its the evening of August 7th and we’re just a few hours past full moon. Two weeks until the new moon and the big eclipse show. Thankfully it wasn’t today because cloud cover was an issue around 13:00 CST this afternoon:
Hopefully weather pattern will turn better in coming days. By better I mean return to normal hot dry conditions. Can’t believe I’m saying that with nice cool air right now
Tonight the moon is full. Earth is located exactly between the moon and the sun (ok technically that precise moment for my location is 4:06 CDT tomorrow morning). In 44 days, the the moon will be between the sun and Earth and at exactly 13:05 CDT the moons shadow will be just north of me. I will be somewhere in that shadow.
Whats interesting about the full moon is that the night sky during full moon is reportedly how dark the daytime sky will get if one is standing in the path of totality during a solar eclipse. I don’t know since I’ve never experienced the wonder of totality. Clearly the horizon during totality will appear more like sunset. But what is the naked eye limiting magnitude (NELM) during totality?
Only way to find out is to be in the path of totality in 44 days. I’ll have my sqm with. Incidentally the NELM with a full moon was 4.3 at 23:40.
Last week as true darkness started I wandered my backyard in awe and wonderment. All around me were fireflies flashing. They floated by my head the close flash incredibly bright. Those near the ground would momentarily create a circle of greenish light. They were everywhere. Some near the ground, some up high in the trees, most floating a few feet above the ground in the still air. At least a hundred blinking lights. Truly a magical night. I knew then I’m at peak firefly.
Every night for the past ten days I’ve been out watching the little bugs. The timing has been great this year with the moon now days past full, a waning crescent. Observing fireflies isn’t something I just started as I’ve been seriously doing it for years. I’ve even tried photography several times. But my local light pollution and perhaps lack of skill, or maybe poor technique, haven’t yielded good results. Its really difficult to capture that special feeling be around hundreds of fireflies
I have learned a great number of things about fireflies over the years. That each species flashes in a unique way. That they are out to mate and will die after their light show is done. That the males are flying around and the females sit waiting to chose the right one.
Perhaps most interesting to me is that a peak period of activity happens. That is, for a short time, perhaps a week or two, the greatest number of fireflies are active. For my location its roughly this time of year ever year. And then they will get less and less as the days pass. Certainly there will be some fireflies flashing in my backyard a few months from now. Just as their were a few flashing two months earlier. But nothing like the numbers I have now. Peak firefly, week of the lightning bug, seems like their should be a name for it.
Fireflies come out well before the sun sets and get ready for their nightly show. If one looks around you’ll see them waiting on tall grass or perched on bush like this guy from my yard last July:
I read that firefly numbers are going down which does not surprise me at all. Between light pollution and lawn maintenance chemicals I’d bet their numbers in suburbia, where I grew up many years ago, are greatly reduced. None of that is present where I am now. I also border a wet wooded area: perfect habitat for fireflies. Even with good living conditions their numbers do vary from year to year. In particular around the 2011 drought period here the firefly activity was significantly less.
And this is something I’ve wondered for years: how do I get an accurate count of the fireflies active in a given area at that time? Maybe accurate isn’t the right word. Maybe quantifiable is a better one. Fireflies per cubic meter / per second? I have observed variations from year to year and would like to be able to compare numbers rather than a gut feeling I have that there are more or less fireflies.
Even if I never figure out how to properly count their quantity or get a stunning picture that truly reflects what I am seeing, I consider myself lucky I get a lovely show every year.
Fifteen minutes past the start of 2017 the sky is clear. All was quiet following the barrage of noise at midnight. My equipment runs flawlessly in the crisp 23? (-5?) air. Blue light from neighbors holiday display illuminates the telescope tube (click for larger version):
Fantastic way to start the new year!
This will be a great year for visual astronomy here in the United States. Unlike 2016 many meteor showers have favorable conditions. The Quadrantids, Lyrids, Orionids, Leonids and best of all the Geminids are all relatively free of moonlight interference. Only the Perseids are affected this year.
The Total Solar Eclipse of 2017
The biggest astronomy event of 2017 is 231 days from now. On August 21, 2017 the moon will pass in front of the sun and its shadow will race across the United States from Oregon to South Carolina. There hasn’t been a solar eclipse where the path of totality crossed the United States in almost 100 years.
This is an event you don’t want to miss and you must be in the path of totality. This narrow strip, just 70 miles wide, is where day will turn to near darkness for a few minutes. Where you will see the incredible beauty of the sun’s corona. No video camera can capture the true spectacle of this event. You must be there!
A beam of light intensifies before the sun rises: morning Zodiacal light. My favorite image from a series of photos I took Friday morning just before the end of astronomical darkness. A few clouds drifting over the area enhanced the color of the bright star Sirius (middle right) and added a bit more color on the horizon. Click picture for a larger version.
It wasn’t but 15 minutes earlier that the sky was completely clear as captured in the picture below, taken with a different angle that captured the Pleiades .
There were active imagers and observers scattered throughout the field. Click image for a larger version. Both of these photographs were 1 minute long exposures using a Skytracker to follow the stars.
The steady brightening of the Zodiacal light was a pleasure to experience this year. Starting about an hour before the end of astronomical darkness the cone of light slowly grows in intensity until a moment is reached where it is brightest and the sky is still dark. Then it fades, the sky begins to lighten as the sun creeps closer to the horizon and the Zodiacal light is washed out with the approaching dawn.