Cheap and good quality - Svbony SV555 Reviews
With multiple Super ED lenses, lens configurations are no longer limited to four, but include five and six lenses. The SV555 is one of the best products for those who want to start deep sky astrophotography.Few dark corners and color halos make image processing less difficult. The Petzval configuration effectively corrects for peripheral blur while reducing costs by not using expensive SD (Super ED) lenses and improving performance by using three lenses in the front. Read More
