Astral Codex Ten’s weekly Open Thread 458 invites reader discussion and lists updates on voting guides, hiring, a London protest and meetups.
The Latest
Open Thread 458
11 Best Refractor Telescopes for Astrophotography in 2027
Compare 11 refractor telescopes for astrophotography, from dedicated imaging optics to all-in-one smart scopes, and find the right fit for your setup.
12 Best Portable Computerized Telescopes for Easy Setup in 2027
Compare 12 portable computerized telescopes by portability, optics, automation, and observing style to find the right fit for your skywatching plans.
Zinc Creep In Cable Spelter Sockets Brought Down The Arecibo Telescope In 2020
A 2024 National Academies report identified long-term zinc creep in cable sockets as the root cause of Arecibo’s 2020 collapse.
Tonight’s Sky Story: NASA Science (NASA APOD, 2026-11-01)
Explore NASA APOD’s colorful Moon image, why lunar hues change, and how to photograph the Moon without mistaking atmosphere for lunar color.
APOD: 2026 November 1 – Colors Of The Moon
NASA’s Nov. 1, 2026 Astronomy Picture of the Day presents lunar colors photographed in Italy and explains how atmosphere and eclipse light affect appearance.
10 Best Astrophotography Camera Lenses for Night Sky Photography in 2027
Compare 10 astrophotography camera lenses by aperture, focal length, camera mount, and tradeoffs to find the right fit for your night sky images.
9 Best Computerized Telescope Mounts for Different Observing Needs in 2027
Compare nine computerized telescope mounts by tracking style, portability, payload, and setup demands to find the right fit for observing or astrophotography.
15 Best Smart Telescope Cameras for Astrophotography in 2027
Compare 15 smart telescope cameras, from self-contained imaging systems to add-on sensors, and find the right fit for your sky, setup, and skill level.
14 Best Portable Telescope Dew Shields for Travel and Field Use in 2027
Compare 14 portable telescope dew shields by telescope fit, portability, light control, and setup style to find the right match for your observing kit.
