SVBONY SV165 40mm Mini Guide Scope, F4 Finder Scope with Scale, Astronomy Accessories Compatible with ZWO QHY Orion Auto SV305 Pro Telescope Cameras for Deep Sky Photography

Works as expected. An improvement over my old 30mm ZWO scope. Plenty good for focal lengths less than 700mm The scope is held by six rotating screws. It must be accurately aligned before use or your guiding will be terrible. This is normal. Just a warning for anyone new to this hobby.

Bought the 40mm variant. Light weight like a finder. Good clear multi coated objective lens. Lots of focus (length) adjustability. The base fits in a standard Synta finder shoe and has three point adjustment so it can be aligned with the optical axis of the main scope. I use this little guide scope with an astro camera to plate solve to align my mount with the stars in the sky an electronic finder if you will. I like Svbony products. They are affordably priced, good build quality and durable performance. I would recommend.

Excelente calidad y precio, buen funcionamiento y tiempos de guiado excelente, recomendable

Works fantastic as a guide scope for my 5" SCT

The scope is decently made and lightweight. Easy to focus and the red locking ring actually works very well to maintain it. Not the most impressive optic but gets the job done. Paired with an old asi385mc and getting consistently good tracking. Worth the couple bucks spent.