Here's my first Jupiter of the season from June 9th right before opposition:
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| Jupiter 6/9/2019 08:52 UTC |
this infrared image enhances the great red spot and the mid equatorial zone (more about the latter later):
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| Jupiter IR-GB 6/9/2019 08:52 UTC |
Recently, portions of the great red spot were found to be peeling off.
Here's a blink of the GRS at larger scale with and without IR enhancement:
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| Jupiter 6/9/2019 08:52 UTC |
The enhancing red stripe is likely a section of the great red spot that has peeled off.
Here's a time lapse of the great red spot taken by BQ Octantis, a member of the cloudy nights forum, imaging from the Australian outback:
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| posted with permission |
A section of the great red spot appears to peel off on June 1 and then progress to the right.
Here's an article at sky and telescope with more details and images.
https://www.skyandtelescope.com/astronomy-news/jupiters-great-red-spot-unfurls-see-it-in-your-scope/
Imaging details:
camera ZWO ASI 290MM with ZWO RGB filters
Baader IR pass 685 nm, Astronomik IR pass 807 nm
6/9/19 08:52 UTC
celestron 11" Edge HD
televue 2x barlow
90 second captures 4 each filter (2 for each of the IR filters)
gain 351, exposure ~3-6ms, 30% histogram, ~150 fps
IR 685 Shutter=4.831ms, FPS (avg.)=145
IR 807 Shutter=23.89ms, FPS (avg.)=41
corrector fogged up despite dew heater, blurring detail
so image is only 50% scale :(
807 nm images as sharp or better than 685 nm despite longer exposure, lower fps
corrector fogged up despite dew heater, blurring detail
so image is only 50% scale :(
807 nm images as sharp or better than 685 nm despite longer exposure, lower fps
