timmdeeg's latest activity
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Ttimmdeeg reacted to Andy Resnick's post in the thread Our Beautiful Universe - Photos and Videos with
Like.
Ergh... I stayed up way to late to try and image the Falcon 9 lunar impact. TL;DR: didn't see anything happen. Firstly: (Nikon Z7 +... -
Ttimmdeeg reacted to Andy Resnick's post in the thread Our Beautiful Universe - Photos and Videos with Like.
My final attempt imaging Hoag's Object (PRC D-51, PGC 54559): Maybe you can discern a faint circular glow around the center dot...
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Ttimmdeeg reacted to Razvan Mihai's post in the thread Our Beautiful Universe - Photos and Videos with Like.
Witch Head Nebula, acquired winter 2026, with Seestar S50. Ploiești, Romania, bortle 7. Due to weak signal, processing was a challenge...
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Ttimmdeeg reacted to Andy Resnick's post in the thread Our Beautiful Universe - Photos and Videos with Like.
Crescent moon this evening @ 800mm (cropped): Deets: nikon D810 + nikkor 800/8, 1/5s, ISO 1250, straight to jpg. Maybe you prefer...
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Ttimmdeeg replied to the thread Our Beautiful Universe - Photos and Videos.It has been an unexpected and pleasant gift at my birthday. :smile: Teleskop: William Optics RedCat 51 Montierung: Skywatcher HEQ-5...
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TWith a radially oriented uniform rod of length 2L with its geometric center ##r_c## from the center of a massive object, integrating...
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Ttimmdeeg replied to the thread High School Long rod in orbit.So it doesn't matter that the tidal forces aren't symmetric along the rod? They are increasing downwards. To exaggerate it, imagine an...
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Ttimmdeeg replied to the thread High School Long rod in orbit.A question aside. Tidal forces would try to stretchen the rod. So there should be one point on the rod where these forces cancel each...
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TA rod would try to orient itself radially, due to tidal forces, in the same way as tidally-deformed ellipsoids of planets and moons...
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Ttimmdeeg reacted to Andy Resnick's post in the thread Our Beautiful Universe - Photos and Videos with Like.
Final image, ready for printing, of the Virgo Cluster. The image area is approximately 14 degrees on a side: At 1:1, it looks like...
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Ttimmdeeg reacted to mitchell porter's post in the thread Undergrad MOND disproved at large scales with
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It's standard MOND lore that MOND doesn't quite work for galaxy clusters - it has its own "missing mass" problem, or need for dark... -
Ttimmdeeg replied to the thread Undergrad MOND disproved at large scales.So is MOND a theoretical framework which makes predictions? If yes, should this framework hold scale independent? In other words would...
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Thttps://arxiv.org/pdf/2604.14327 Fig.1 and Fig.2 seem to show that MOND is disproved at large scales due to measurements of galaxy...
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Ttimmdeeg replied to the thread High School Do Dark Energy and the Casimir effect indicate Exotic Matter could exist?.See also Jaffe 2005 https://arxiv.org/pdf/hep-th/0503158 The Casimir force is simply the (relativistic, retarded) van der Waals force...
