Category: All Sky Cameras

Solar observing, Newtons Rings – artifacts of narrow band filtering, use it for good not evil

Drexel Glasgow posted images 14 Aug 2024 on Facebook with title “With the Altair GPCAM 130M. Plenty newton rings” Kirtsunegari posted in StarGazersLounge some animated gifs showing what you likely see when you look at live data, and what the software has to guess at when trying to separate the “really on the sun” things
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Solar Photography group on Facebook – comments

https://www.facebook.com/groups/1278689162297491/?hoisted_section_header_type=recently_seen&multi_permalinks=2820285491471176 Is the reason it is white at the edges, because the many colors are mixed, looking through deeper stretches of solar atmosphere? Can you give particulars of lenses, camera, settings, exposure, filters, post-processing, software? I just joined this group and have not had time to look around. I have been following space based and
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Remote and non-destructive indicators for trees at risk of cracking

Forest Research @Forest_Research Stem cracks are defects in firs and conifers. Affected timber isn’t suitable for structural uses, reducing value. We’re researching this. Snr Scientist Ruben Manso explains why and asks forestry professionals to report cracks using TreeAlert. 🔗 https://forestresearch.gov.uk/news/139764-stem-cracks-in-conifers-report-it-via-treealert/ https://pic.x.com/kabfzsdnse Replying to @Forest_Research I carved wood for several decades and my first thought seeing
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Using ZnSe and GaAS lenses with Sony Starvis and similar detectors at high gain and frame rates for machine vision applications

To: Fuzhou Hundreds Optics Inc 100Optics.com, Some very low light and NIR sensors might be able to pick up LWIR, out to thermal wavelengths 5-15 microns — if they used ZnSe lenses or GaAs. You could check pretty easily.  I think the Sony Starvis might work but would need to use statistical methods and high
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Hitching a ride on an extrasolar object – Take lots of supplies and plan for 10000 years

Hitching a ride on an extrasolar object – Take lots of supplies and plan for 10000 years — I was working out what is needed to image nearby stars and planets. But I remembered that Oumuamua extrasolar object.   https://en.wikipedia.org/wiki/Heliosphere#Heliopause   If another one passes by, or there was some way to catch up, Elon
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Humans can colonize Milky Way Galaxy through intelligent devices, and search for gravity signals

Humans can colonize Milky Way Galaxy with intelligent devices, and search for gravity signals. — Galactic civilizations using intelligent devices can live billions of years. So the most likely “species” for human devices to meet would be intelligent devices. Nancy Grace Roman Space Telescope might look for intelligent messages in the galactic plane. And space
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