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This large-aperture telescope is an upgrade based on the SV550 80mm. If you put the two together, you will be very surprised!  ...

Why did we still choose the lens structure of the FPL-51 Triplet? We can discuss it together.  ...

We will redefine testers in a new way and hope we can cooperate with users who are interested in our products better in the future. If you are interested in it, please see our introduction.  ...

Do you want to be our experiencer of new release products? Apply and fill out the application form to be our tester!  ...

What is the light pollution and the main types of light pollution? How to reduce the impact of light pollution on astronomical observations? Read more to know the details.  ...

After the release of SV550 122MM, we received a lot of feedback about SV550 122MM. Do you want to know their feelings after using SV550 122MM? This blog will take you to hear their thoughts.  ...

Did you witness the annular solar eclipse on Oct,14th? We are holding the annular solar eclipse(sun) picture-sharing competition. This blog will tell you the details about this contest.  ...

An annular solar eclipse will happen in some regions this week. What is an annular solar eclipse? Where is visible for the annular solar eclipse on October 14th,2023? What preparations do we need to make for this annular solar eclipse? This blog will lead you to the annular solar eclipse!  ...

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