Contains:  Solar system body or event
2024 Eclipse timelapse through the clouds in Texas, weine006

2024 Eclipse timelapse through the clouds in Texas

2024 Eclipse timelapse through the clouds in Texas, weine006

2024 Eclipse timelapse through the clouds in Texas

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Description

The clear skies in central Texas that were statistically likely for the eclipse did not appear.  Me and the 75 other eclipse enthusiasts at the Explore Scientific star party north of Leakey, Texas had a great time talking astro stuff for three days and worrying together about the forecast. On the morning of the 8th, there was low, dense clouds everywhere.  By C1, there were some wisps of thin clouds but no blue skies.  10 minutes before totality, the densest cloud of the day hovered over the sun.  We willed it to move to the north and it slowly obliged.  I never saw the start or end of totality but saw totality and the inner corona for about 5 seconds through 3 degree-wide thin clouds three different times during the four minutes.  There were slightly less clouds from C3-C4 than the beginning.  
So, it was not ideal but it could have been worse as we might have had a complete wipe-out.

Obviously, this played havoc with imaging plans which were primitive to begin with as I spent most of March and April time getting my van ready for the 1200 mile drive to Texas rather than doing eclipse practice runs.  


Attached is a gif file showing (through the many clouds!) the eclipse from 12:24 pm to 2:48 pm including 3 images of totality at 1:33 pm where the inner corona surrounding the sun is visible as are the prominences coming off the sun's surface at 4, 6 and 9 o'clock.  You can also see sunspots on the sun, one near the center right and one at upper right. 
This was imaged with my refractor at 863 mm focal length on the astro-physics 1100 mount (unguided) using the ZWO 6200 MM camera with a clear filter (creating a black and white image). 


It was unlucky to have such clouds but it could have been worse. These 25 images are from about 75 that I took. The other 50 showed nothing at all or a very overexposed sun. The partial phases were shot through a solar filter (0.01 second exposure) which I removed for the totality images (0.2 to 0.8 sec exposures).  Since there was second to second  variation in the thin cloud cover and the available light, I had  adjusted the exposure for each image in Pixinsight to make them approximately equal.  The images are slightly out of focus because the sun was never visible long enough to get a good focus on!

Most of the two-and-a-half hours we couldn't even see where the sun was so it's fortunate that we saw anything.   During totality the camera was running on a pre-programed sequence of exposures ranging from 0.001 sec to 1 second.  It was only luck that during the 4 minutes of totality both the sun was visible and the exposure was correct.

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