The RedCat 91 is a well-crafted astronomical imaging refractor that is easily portable, with a machined aluminum finish and ...

Well, any of us who has ever looked through a telescope could say the same, for the two principal types in use today were developed by giants: the refractor by Galileo and the reflector by Newton.

McKim Observatory still houses many of its original instruments, including a 9.53 inch Clark Refractor telescope, a meridian transit telescope, and a gravity driven chronograph. Missing from the early ...

The subject of space exploration has been one of the most enigmatic and interesting topics of all time. When taught about ...

2023 Bowman Chrome University 1st Bowman Refractor (the hobby puts a premium on a player’s 1st Bowman card as a key pre-rookie card and the refractor version is a bit more rare and desirable ...