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MOTHRA telescope 1,140-lenses to map the cosmic web
Friday, March 13, 2026 by Trey Abbe
A new astronomical instrument is being developed to capture the faint glow of the cosmic web with a scale and simplicity that set it apart. Built as an array of 1,140 individual objective lenses working together, the system trades a single large mirror for many smaller optics, enabling exceptional s...
Sky-Watcher HAC125DX Mini astrograph
Thursday, July 31, 2025 by Russ Scritchfield
There’s something about a small telescope that reminds me of a pocketknife in some ways. It may not look like much at first, but if it’s well built and purpose driven, it can surprise you with just how capable it really is. The Sky Watcher HAC125DX Mini astrograph falls into that categor...
Canada sky glow is less than in the United States
Thursday, June 27, 2024 by Richard Harris
Recent observations show that Canadians generally experience less sky glow than Americans. This difference is mainly due to varying population densities and urban development patterns between the two countries. With its vast wilderness and lower population density, Canada has fewer urban centers con...
Measure light pollution with this new sky glow meter
Monday, May 13, 2024 by Russ Scritchfield
Measuring light pollution involves assessing how much artificial light affects the darkness of the night sky, which can interfere with our view of stars and impact ecosystems. A new handheld device that measures night sky darkness with high precision, providing reliable readings up to 21.5 mesas ...