Q＆A -SV550 122MM F7 APO Triplet
There are some Q＆A that you may be concerned about sv550 122mm. We will continue to update the news! Read More
Blog
News about SV550 122MM——Star Party & Testing Plan
SV550 is meeting you offline! Let's see it in Cherry Springs in a week! Read More
SV550 122mm F7 VS SV550 80mm F6-Explore More Surprises
This large-aperture telescope is an upgrade based on the SV550 80mm. If you put the two together, you will be very surprised! Read More
SV550 122mm-Why is It Still the FPL-51 Triplet?
Why did we still choose the lens structure of the FPL-51 Triplet? We can discuss it together. Read More