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ASTAP & HNSKY programs
http://hnsky.org/
Home of ASTAP and HNSKY, two free astronomy programs offering image stacking, plate solving, and a full-featured planetarium for amateur astronomers and astrophotographers. The creator also shares their own astrophotography images and equipment details, making this a practical hub for both software users and sky enthusiasts.
Personal Page Astronomy & Space | 2026-03-13
http://rfchoke.com/
http://rfchoke.com/
A technical reference site dedicated to RF chokes, ferrite cores, and related radio frequency electronics components used in amateur radio and RF engineering applications. Visitors will find practical information on choke design, impedance characteristics, and suppression of common-mode currents on antenna feedlines.
Resource Electronics | 2026-03-13
Home page, Fire Effects Information System
https://feis-crs.org/feis
The Fire Effects Information System (FEIS) is a U.S. Forest Service database providing detailed scientific syntheses on fire ecology, fire regimes, and the effects of fire on plant and animal species across the United States. Visitors can explore species profiles, vegetation crosswalks, tree distribution maps, and research publications covering ecosystems from ponderosa pine forests to Sonoran desert scrub communities.
Resource Biology | 2026-03-12
https://radioring.neocities.org/
The Radio Ring is a Neocities-based webring connecting personal websites whose owners share a love of radio, welcoming both amateur radio enthusiasts and casual fans alike. Built on the onionring framework, it offers simple join instructions and links members together in a navigable loop.
Webring Amateur Radio | 2026-03-12
Solar Power Guide: Welcome to Bob's Solar Energy Hobby Site!
https://solarpower.guide/
Bob Robertson's hobby site is a sprawling reference on solar power, covering everything from basic definitions and how solar panels work to educational guides for kids and van-life solar setups. With dozens of articles on renewable energy topics, it reads like a one-man encyclopedia built by a retiree passionate about the subject.
Personal Page Electronics | 2026-03-12
Amateur Radio for the Twin Cities
https://tcfmc.org/
The Twin Cities FM Club (TCFMC) is a Minnesota-based amateur radio organization dedicated to emergency communications, community education, and operating local repeater frequencies for ham radio operators in the Twin Cities area. The site features club nets, a weekly swap shop on 146.76, membership sign-up, and resources on technologies like Wires-X, EchoLink, and AllStarLink.
Organization Amateur Radio | 2026-03-13
NAQCC Introduction
https://naqcc.info/
The North American QRP CW Club (NAQCC) is a free-to-join nonprofit organization dedicated to promoting low-power amateur radio operation using Morse Code and simple wire antennas. Members can participate in contests, sprints, challenges, and CW nets, with resources to help hams of all skill levels improve their CW speed and proficiency.
Organization Amateur Radio | 2026-03-13
https://mrao.cam.ac.uk/surveys/snrs
Maintained by D. A. Green at the Cavendish Laboratory in Cambridge, this is a comprehensive scientific catalogue of 310 known Galactic supernova remnants, updated through October 2024. It includes detailed listings, alternate names, summary data, and links to astrophysics literature via the ADS system, making it an essential reference for researchers and astronomy enthusiasts alike.
Resource Astronomy & Space | 2026-03-12
Sea and Sky - Explore the Oceans Below and the Universe Above
http://www.seasky.org/
Sea and Sky is a dual-themed educational resource covering both ocean life and the universe, with sections on coral reef creatures, deep sea exploration, saltwater aquariums, constellations, and space exploration timelines. Visitors can browse image galleries, play free sea-themed games, read news headlines, and dive into hundreds of curated links covering marine biology and astronomy alike.
Resource Astronomy & Space | 2026-03-11
Home - Central Texas Astronomical Society
https://centexastronomy.org/
The Central Texas Astronomical Society operates Meyer Observatory and the Turner Research Station near Clifton, Texas, hosting public open houses and member star parties with large-aperture telescopes. Their mission spans stargazing outreach, astrophotography, astronomy education, and research for both newcomers and experienced observers in the Central Texas region.
Organization Astronomy & Space | 2026-03-12