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Optolong L2 Dual Combo Filters Review
Thursday, July 30, 2026 by Jim Thompson
Optolong's multi-narrowband (MNB) filter is called the L-Synergy. It has a 7nm wide pass band at O-III and another at S-II. When paired with their existing L-eXtreme filter and a one-shot colour (OSC) camera, one is able to produce nebula images using the Sulphur-Hydrogen-Oxygen (SHO...
StellaLyra F4 Imaging Newtonian
Saturday, June 7, 2025 by Richard Harris
The StellaLyra 4.5" f/4 M-LRN-D Carbon Fibre Imaging Newtonian Reflector is a compact, fast telescope designed with the needs of astrophotographers in mind. With an aperture of 114 mm and a focal length of 456 mm, it delivers a fast f/4 focal ratio, making it well-suited for capturing dim and e...
Buyer beware HAC125DX
Wednesday, June 4, 2025 by Richard Harris
The Sky-Watcher HAC125DX is a compact, high-speed astrograph designed for imagers seeking fast optics in a small and portable form. While it initially generated buzz as a new release, it has now been on the market long enough to be considered a known quantity, with real-world results and growing use...
Airy Disk telescope binoculars
Wednesday, February 19, 2025 by Richard Harris
Airy Disk has expanded its lineup of high-performance refractors with the introduction of twin bino versions of their well-regarded 152mm f/5 ED doublet and 204mm f/7 triplet APO refractors. These new configurations offer a true binocular telescope experience, enhancing depth perception and providin...