SV503 80ED F7 Doublet Refractor review
In-depth review of the SV503 80ED F7 doublet refractor: Testing optics, chromatic correction, and performance for planetary/DSO imaging with its 0.8x reducer. Read More
The SV503 102ED Review from Bill Bonar
SV503 102ED review: A 102mm F7 ED doublet refractor offering exceptional planetary, lunar, and DSO views with minimal CA. Great value vs. more expensive scopes. Read More
Do you want to spot a dance of a half-trillion stars?
Do you want to spot a dance of a half-trillion stars? Hi, everyone. Today we are talking about how to choose a refractor telescope. Read More