I needed a lightweight guide scope for my SA GTi and the SV165 is ideal. It is very well made, good quality.
ข้อดี: The M42 thread at the rear means you can, with a M42-CS adapter, screw fit e.g. an ASI120 guide camera into the scope instead of using the compression ring. I prefer this.
The focus lock ring is big, ideal for using in the dark.
Didn't imagine it would be so big. This is some serious machine-worked piece and easy to adapt to any tripod with multiple configuration options. The price was a bit high but the product is well worth it as you will only buy on in your life time.