Seven Samurai: LRGBSHO filters
The LRGBSHO might be the most common 7-piece filter combination in astronomy. Read More
Blog
The SV503 telescope Use Guidance and Suit for the beginners
The beginner SV503 80ED telescope suit to begin your Astronomy hobby. The blog includes the optical principle and the beginner kit: SV503 80ED, SV113 20mm eyepiece as well as SV188P diagonal. Read More
SV305M Pro Monochrome Camera review 2
I take the SV305M Pro Monochrome Camera for Macro shooting! Can this work? Read More
What diagonal should I choose, Prism or Mirror type?
In this article, I take the SV188P and SV138 as the example, introduce each kind of diagonal's advantages and shortcomings for the beginners, the 45° is more suitable for the terrestrial， or long focus Schmidt-Cassegrain and Maksutov-Cassegrain telescopes, while it induces the CA, and so favored by today's market...... Read More