Founder Optics 0.8X Focal Reducer for FOT86/FOT106 - RED0.8X type-extension-tubes-and-spacers 5") Phone Compatibility: Any smartphone

5") Phone Compatibility: Any smartphone Included Items: Zoom eye piece with integrated T-adapter | Carrying case | Eyepiece lens cap | Eyepiece Port cover | Eyepiece carrying case | Eyepiece pouch | Lens cloth | Instrument manual

16 cm × 10

7 Resolution (Rayleigh) 0

They are also useful (with or without diagonal) when you need more out-travel for focusing on nearby terrestrial subjects

As long as the telescope has at least a 2

Founder Optics 0.8X Focal Reducer for FOT86/FOT106 - RED0.8X type-extension-tubes-and-spacers 5") Phone Compatibility: Any smartphoneThe Founder 0. 8X Focal Reducer was designed to reduce the effective focal length of the FOT86 or FOT106 refractors, but it will work with pretty much any f 5 to 5 7 refractor. The RED0. 8X has interchangeable M42 male and M48 male mounting threads. The optics, which are fully multi coated, have a clear aperture of 38 mm.