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PostPosted: Tue Oct 24, 2017 11:54 am 
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I don't know much about how astro-photography is done nowadays. I have heard of supercooling image sensors, especially in IR astronomy, and also they seem to have some pretty advanced software.

Interesting about Lambert and optics.

And well... Maxwell goes without saying.

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PostPosted: Wed Nov 29, 2017 2:43 pm 
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The sun developed a real nice filament next to a coronal hole. Huge string of plasma, many Earths long, just sitting there in an arch. Some of it erupted and reinforced the flow from the hole. Kp briefly got to 4 (storm threshold). More gorgeous aurora is expected when the next CME gets here in a day or so. That's all.

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PostPosted: Wed Nov 29, 2017 8:33 pm 
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ZoWie wrote:
I don't know much about how astro-photography is done nowadays. I have heard of supercooling image sensors, especially in IR astronomy, and also they seem to have some pretty advanced software.

Interesting about Lambert and optics.

And well... Maxwell goes without saying.


looks like a personal Aurora, must be leaking sunshine may need to fix something or plug a hole.

What it’s like to get your aura photographed at Detroit’s Aura Aura

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PostPosted: Thu Nov 30, 2017 6:02 pm 
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Aurora was pretty, but the CME missed Earth.

The filament is still there. It's amazing, and very rare. Usually they're straight, but this one is practically spiral shaped, and bigger. It just rotated off the visible disk, though.

What you're seeing is plasma around an intense magnetic field. If the field ruptures somewhere, you get an event like a mini solar flare, with mass ejection into space.

The auracam sounds like a GSR machine hooked to an expensive Polaroid camera. Its output is interesting and sometimes pretty, but I doubt it's measuring anything to do with the person's inner spirit. Real Kirilian photography requires that the object be laid on a photographic plate and charged with a huge electric source like a Tesla coil. What you're seeing is the discharge. Not the safest thing for humans to be doing.

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PostPosted: Tue Dec 12, 2017 11:56 pm 
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2017 Geminid meteor shower this week

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........"With August's Perseids obscured by bright moonlight, the Geminids will be the best shower this year," said Bill Cooke with NASA's Meteoroid Environment Office. "The thin, waning crescent Moon won't spoil the show."

The shower will peak overnight Dec. 13-14 with rates around one per minute under good conditions, according to Cooke. Geminids can be seen on nights before and after the Dec. 14 peak, although they will appear less frequently.

"Geminid activity is broad," said Cooke. "Good rates will be seen between 7:30 p.m. on Dec. 13 and dawn local time the morning of Dec. 14, with the most meteors visible from midnight to 4 a.m. on Dec. 14, when the radiant is highest in the sky."..............

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PostPosted: Fri Feb 09, 2018 1:17 pm 
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Active Region AR2699 emerged around the solar limb a couple of days ago, and it has grown considerably since. It's now unstable enough for M class flares, though it hasn't made any. Many C class, however. Those are the piddly ones.

It's a real nice paired sunspot group with the unstable magnetic fields and everything. Much bigger than Earth. It could swallow this planet whole, and there would be no trace. The planet would vaporize. Poof. Just like that, there's no drumpf, and no North Korea, and no Pennsylvania Avenue to have a stupid military parade on, and no military to be dragged into said parade. And no anything else either.

Cosmology is like that.

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PostPosted: Sat Feb 10, 2018 4:14 pm 
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AR2699 continues to transit across the Earth facing disk. It's approaching the middle, and in a very geoeffective position. It managed a rather piddly little C-class flare this morning (US time). It shows up real nicely as a small spike in the otherwise flatlined X-ray. Apparently HF propagation took a dip on the daylight side of this planet, but not a major dip.

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PostPosted: Mon Feb 12, 2018 2:37 pm 
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AR2699 is now four sunspots, and a rather impressive group. It's made some more flares, none of consequence. A C class event did send out a weak CME that may or may not combine with flow from a coronal hole to make some aurora worth showing the tourists.

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PostPosted: Tue Feb 13, 2018 2:36 pm 
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Confirmed on the CME, but it's a pretty weak one. The coronal hole is probably more noteworthy, and it isn't much either. It's a very nice coronal hole in a very geoeffective position, but in solar minima that's pretty normal stuff. It's kind of the solar-terrestrial version of rain in Seattle.

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PostPosted: Mon Mar 12, 2018 1:18 pm 
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Equinox is always a good time for aurora. Norway has been having some all-time sky shows. This is due to the Russell-McPherron Effect. Basically, the equinox lines up the Earth's magnetic field with the southward interplanetary one, sometimes making a direct connection to the sun.

Paper here (lots of math, none scary):

http://www-ssc.igpp.ucla.edu/personnel/ ... papers/40/

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PostPosted: Wed Mar 20, 2019 5:30 pm 
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Image

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PostPosted: Fri Mar 22, 2019 1:17 pm 
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Now we have many many little flares, but bigger than the one in the picture. Largest is C4.8. Respectable, if not spectacular. Also a CME and predicted G2 magnetic storm sometime over the weekend.

Culprit is a very energetic sunspot cluster with a complex magnetic configuration, which wouldn't be a big deal in a solar peak, but we are in a solar minimum. We have had long periods with no sunspots at all. Therefore, it's a very big deal. It's cranking out C class flares like a champ, w/ mass ejection.

If it happens (75% shot), any CME reaching Earth this close to the equinox is enough for very good aurora, possibly visible in the northern US. Also a big deal, comparatively speaking.

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PostPosted: Sat Mar 23, 2019 2:59 pm 
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G2 storming is still predicted, but spacecraft show nothing heading earthward and so far the dreaded Bz is still in positive territory. If it happens, all time aurora for a solar minimum, but don't stay up all night yet.

Sometime in the next few days everyone's favorite conspiracy theory, HAARP, is transmitting. If you start seeing deer walking backwards, or if the president of Venezuela suddenly vanishes in a large smelly puff of blue smoke, you will know why. HAARP is civilian now, so they will post stuff to their web site as merits. I know one transmission will have spacey music modulated onto it, just because it's fun to do so. The current guy running it is pretty cool as these guys go.

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PostPosted: Sun Mar 24, 2019 3:15 pm 
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G2 level storming is no longer forecast. HAARP is March 25-29, 2 to 10 MHz. For reasons relating to the low FoF2 in solar minimum, I'd start looking around 4 MHz. Get the foil hats on.

ARRL:

Quote:
A "special broadcast" featuring Concordia University Assistant Professor of Intermedia Amanda Dawn Christie will be among the transmissions. Fallen said Christie "has a special 1-hour piece to perform each evening of the campaign at different times." Christie's GHOSTS IN THE AIR GLOW -- ionospheric audio and image mixing with HAARP -- website offers more information.

Fallen said HAARP operations will generally occur at times within the windows between 2230 and 0300 UTC, and again between 0500 and 0900 UTC each day.

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PostPosted: Fri Mar 29, 2019 1:39 pm 
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The few people who heard the music said it sounded pretty freaky. There were also some fuzzy slow scan TV images. The setup is designed for science, not broadcasting. It's a ray gun, with a very tight beam at a high angle directed away from temperate latitudes. The exact parameters depend on which experiment is paying the (rather large) bills at the moment. The FAA puts out a restricted area, which is one way to know when it's transmitting, though lately they just tell you.

It the thing isn't shut down now, it soon will be. That should do it until fall, though I'm sure it'll still get blamed for grandpa's rheumatism.

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