Robert W Williams
@robertwwilliams.bsky.social
Paleontologist / palynologist. Dinoflagellate taxonomy through 220 million years of evolution, which coincidentally is the time span of one Milky Way rotation.
Astrophotographer and telescope optics maker.
https://www.dinium.net/english/
Astrophotographer and telescope optics maker.
https://www.dinium.net/english/
Oh well, it's only takes years of trial and error studying various techniques and inhuman quantities of patience. Here's 2000 hours compressed to 30 seconds. 24 inch (62 cm) diameter f/3.4 paraboloid primary mirror.
November 11, 2025 at 12:58 PM
Oh well, it's only takes years of trial and error studying various techniques and inhuman quantities of patience. Here's 2000 hours compressed to 30 seconds. 24 inch (62 cm) diameter f/3.4 paraboloid primary mirror.
Since I recently retired, I can gleefully work all day figuring and testing my 62 cm (24 inch) cellular primary mirror. Having produced a good spheroidal figure, it's finally ready to parabolize. Amazingly, this is Norway's largest optical telescope. 🔭
August 2, 2025 at 6:34 PM
Since I recently retired, I can gleefully work all day figuring and testing my 62 cm (24 inch) cellular primary mirror. Having produced a good spheroidal figure, it's finally ready to parabolize. Amazingly, this is Norway's largest optical telescope. 🔭