General > General Technical Chat
Eclipse watchers in America on April 8th.
jpanhalt:
Our sky (Cleveland, OH) was just a little high haze and clear. The ring of fire was easily seen. My eclipse glasses did not show the ring during totality. It was simply dark. Switched to my welder's helmet at 11 to 12 (I didn't realize it went to shade 13) with better glass, and it was quite distinct. Spurs extended more than the apparent width of the moon.
BrianHG:
Though there were a few hazy clouds, it was still a spectacular show.
There was a perfect ring for over a minute and a half, then the 'diamond ring' came through.
I used 2 professional sets of photographic quality polarizers when rotated at their darkest cut light at over 1million:1.
I was able to adjust the contrast through rotation throughout the eclipse and had the best possible view albeit the loss by the overcast clouds...
mag_therm:
Further to my #21, here are images of data as the eclipse passed over.
I quickly edited some explanatory text boxes over the images
The first one is from the power datalogger for my solar battery powered ham station.
It is as expected, the solar panels shut down completely and sharply at UTC19:15 confirming the estimated alignment time in local media here.
https://app.box.com/s/az1x7kabj5ckf5869q2426rkc0ewom5i
The second is for the doppler shifts of the signal from CHU on 7850 kHz.
The re-combination and re-ionization are clearly shown, I think.
https://app.box.com/s/9h748ohj6w3g0ixvo7jvjrcxgfk5pgvw
But this coincided in time with the max occultation AT my QTH,at about UTC19:15.
Queries ??
-If the signal was a symmetrical hop, the doppler shifts would have been at a position halfway between my QTH and CHU,
which is a bit North of Toronto and later in time.
-If the signal was a Pederson mechanism, there would have been two doppler shifts at different times.
-So maybe this signal was an asymmetrical NVIS ( near vertical incident skywave.) ??
There are about 60 hams contributing data , so the researchers report will be interesting.
Sal Ammoniac:
I had perfect weather here, but since I didn't travel, I was way off the path of totality and only 30% of the sun was obscured. Fun to watch anyway.
johansen:
Clouds parted just in time for us to see the entire 3 minute long eclipse in dripping springs tx.
The image attached is from my fther in laws seestar telescope.
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