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Top news results for chromatic aberration
Askar F-Series 131F with dedicated 0.74x reducer has been released
Wednesday, May 27, 2026 by Russ Scritchfield
Askar is continuing to grow its F Series astrograph lineup with a larger aperture option designed for astrophotographers who want strong optical performance without sacrificing real-world usability in the field. The new 131F feels purpose-built for imagers who value reliable mechanics, clean st...
Askar 111F APO telescope released with dedicated 0.74x reducer
Wednesday, May 20, 2026 by Richard Harris
The refractor market has become crowded over the past few years, but every once in a while a telescope shows up that feels like it was designed by people who actually spend nights under the stars. The new Askar 111F gives that impression right away. Built around a 111mm aperture with a 766mm focal l...
NOBLEX ultra-wide-angle anastigmatic eyepiece is here
Tuesday, September 2, 2025 by Austin Harris
When we talk about astronomy equipment, the conversation usually circles around telescopes, mounts, and cameras. Eyepieces are sometimes treated as accessories, when in truth they are the final translators between the light gathered by the telescope and the eye of the observer. The NOBLEX ultra-wide...
Sigma 17-40mm art lens put to the test
Tuesday, August 12, 2025 by Russ Scritchfield
Sigma’s latest addition to its Art lens lineup, the 17–40mm F1.8 DC Art, brings an ambitious combination of high-speed aperture, weather-sealed construction, and extended focal range tailored for APS-C mirrorless systems. As the successor to the much-loved Sigma 18–35mm F1.8 for DS...