ZWO ASI174Mini USB2.0 Mono Guide Camera - ASI174MINI Equalizer Secondary Mirror Obstruction by Diameter:

Secondary Mirror Obstruction by Diameter: 28 %

like a Caddy

indoor use only) Power off brake Electronic friction brake GPS Built-in Wi-Fi Built-in Communication port Yes (Wi-Fi and USB

The entire focuser barrel is CNC machined with an anti-reflective internal design and matte paint

ZWO ASI174Mini USB2.0 Mono Guide Camera - ASI174MINI Equalizer Secondary Mirror Obstruction by Diameter:ZWO ASI174MM Mini Monochrome Imaging Camera The mini version of the ASI174MM has a 1. 25" barrel size, making it really easy to connect to your telescope and focus, since the 174mini comes to focus at the same position as an eyepiece! With it's high dynamic range and low read noise, the ASI174MM Mini will make a good planetary imager as well as a guider. The Sony IMX174 monochrome sensor has a 1936 x 1216 pixel array in a 11. 3 mm x 7. 1 mm (1 1. 2")