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#eclipse

13 posts10 participants3 posts today
Continued thread

50 years ago today, at 16:09 UTC on 17 July 1975, the Apollo-Soyuz Test Project culminated in the first docking of the spacecraft - but afterwards an interesting experiment took place: after they separated again Apollo (the final one; no number) occulted the Sun from the point of view of Soyuz 19. Images obtained show mostly outgassing from Apollo forward-scattering light from the hidden Sun but allegedly there is also some outer corona in the images of which esa.int/ESA_Multimedia/Images/ shows one with a negative caption. The planned artificial #eclipse experiment was described in the mission press kit nasa.gov/wp-content/uploads/st on PDF pages 37-39 and the outcome is discussed in the didactical NASA brochure ntrs.nasa.gov/api/citations/19 on PDF pages 20-27; there is apparently also a more technical paper in a mission science report but I couldn't find that one online.

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2020 June 15

A Ring of Fire Sunrise Solar Eclipse
* Video Credit: Colin Legg & Geoff Sims
facebook.com/ColinLeggPhotogra
facebook.com/BeyondBeneath
* Music: Peter Nanasi
peternanasi.com/about

Explanation:
What's rising above the horizon behind those clouds? It's the Sun. Most sunrises don't look like this, though, because most sunrises don't include the Moon. In the early morning of 2013 May 10, however, from Western Australia, the Moon was between the Earth and the rising Sun. At times, it would be hard for the uninformed to understand what was happening. In an annular eclipse, the Moon is too far from the Earth to block the entire Sun, and at most leaves a ring of fire where sunlight pours out around every edge of the Moon. The featured time-lapse video also recorded the eclipse through the high refraction of the Earth's atmosphere just above the horizon, making the unusual rising Sun and Moon appear also flattened. As the video continues on, the Sun continues to rise, and the Sun and Moon begin to separate. This weekend, a new annular solar eclipse will occur, visible from central Africa, the Arabian Peninsula, and a narrow band across Asia, with much of Earth's Eastern hemisphere being able to see a partial solar eclipse.

apod.nasa.gov/apod/ap200615.ht

** Note by grobi:
"To upload this video, I converted it and compressed it to a smaller file-size under #linux with the free software ffmpeg and the corresponding command:

'ffmpeg -i video_in.mkv -vcodec libx265 -crf 28 video_out.mp4'

Maybe you would like to post a corresponding video on a scientifically related topic, but it is perhaps too big? Then try ffmpeg."

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"Welcome back to the
Space Culture Club
(Feel free to contribute, rather as a reply than using the hashtag)
defcon.social/@grobi/114663418 "

2023 September 17

Moon Mountains Magnified during Ring of Fire Eclipse
* Credit & Copyright: Wang Letian (Eyes at Night)
luckwlt.com/About%20Me.html

Explanation:
What are those dark streaks in this composite image of a solar eclipse? They are reversed shadows of mountains at the edge of the Moon. The center image, captured from Xiamen, China, has the Moon's center directly in front of the Sun's center. The Moon, though, was too far from the Earth to completely block the entire Sun. Light that streamed around the edges of the Moon is called a ring of fire. Images at each end of the sequence show sunlight that streamed through lunar valleys. As the Moon moved further in front of the Sun, left to right, only the higher peaks on the Moon's perimeter could block sunlight. Therefore, thehttps://defcon.social/@grobi/114663418339078163 dark streaks are projected, distorted, reversed, and magnified shadows of mountains at the Moon's edge. Bright areas are called Baily's Beads. Only people in a narrow swath across Earth's Eastern Hemisphere were able to view this full annular solar eclipse in 2020. Next month, though, a narrow swath crossing both North and South America will be exposed to the next annular solar eclipse. And next April, a total solar eclipse will be visible across North America.

apod.nasa.gov/apod/ap230917.ht

Dear Emacs/Java Fediverse,

I'm setting up `lsp-mode` and `lsp-java` in Emacs for the first time (don't ask) and it looks like the latter only supports Eclipse's LSP implementation, which of course, being Eclipse, poops out a whole bunch of extra settings files all off the source file tree when it first runs.

If I wanted to use a bad IDE like Eclipse I'd just use that, I really don't want it's little setting file turds littering the repo (Gradle is bad enough).

Is there any of: a) An alternative LSP server for Java that is supported somehow, or b) A way to make lsp-java/Eclipse read all of the extensive declared configuration in Gradle's config and hence not need to duplicate that in a billion places?

Help a hacker out here please!

#java#emacs#lsp