As a third-generation night vision device adapted for use in astronomy, the Collins Electro Optics I3 image intensifier promises to increase the effective aperture...
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The good: Versatile, light, fine optics The bad: Needs cool-down time and near-perfect collimation Over the past five decades, the Celestron C8 has established...
Sized between the popular 4-inch and less common 5-inch refractors, the Vixen Optics ED115S ED doublet refractor is an f/7.7 instrument that uses FPL-53...
As an f/15 Maksutov-Cassegrain telescope (MCT), the Meade LX65 optical tube assembly is a viable alternative to to both the Celestron 5-inch Schmidt-Cassegrain and...
Like its little brother, the Vixen Optics VMC200L, the VMC260L (MSRP: $4,899) utilizes the field Maksutov-Cassegrainian design that employs a small sub-diameter correcting lens...
The APM 140mm doublet ED apochromatic refractor neatly fills the gap between some very capable 5-inchers and the much more difficult-to-mount 6-inch instruments. With...
Available as a bare optical tube assembly or packaged with a variety of computerized mounts, the Celestron C6 Schmidt-Cassegrain (MSRP: $459.95) fills the gap...
Orion‘s 6 and 7-inch Maksutov-Cassegrainians are a good alternative for lunar, planetary, and double star observers who desire a very capable instrument without the...
In a world abundant with Schmidt-Cassegrainian telescopes (SCT), the GSO (Guan Sheng Optical of Taiwan) 8-inch offering (MSRP: $899) is throwback to the all-mirror...