ZWO FF130 APO Refractor Telescope

The ZWO FF130 APO is a refractive astrograph with the powerful flatfield optical design which saves you from the expensive cost of a field flattener. It eliminates the trouble of calculating the back focus distance of the flattener and connecting various accessories to achieve that distance. You can just connect any possible accessories you need. As long as the target is focused, the whole optical system is perfect for imaging. This makes the whole setting up process much more convenient, and saves your time, allowing you to pay more attention to the image shooting itself.

Specifications:

• Observing mode: 148.5mm Aperture size: 130mm
• Net weight: 10.5kg
• Focal length: 1000mm
• Gross weight: 12.5kg
• Focal ratio: f/7.7
• Image circle: 60mm
• Objective lens: Quadruplet air-spaced APO (including two ED glass)
• Imaging mode: 116mm(from the base of M48X0.75 male thread)
• 136mm(from the base of M54X0.75 male thread)
• 156mm (from the base ofM68X1 male thread)
• 186mm (from the base of M76X1 male thread)
• Rear-end thread type: M86×1-M68×1
• M68x1-M54×0.75
• M54×0.75-M54x0.75
• M54×0.75-M48x0.75
• (M48X0.75 filter thread inside)
• Total length: 842.5mm (including 1.25″ eyepiece holder as dew shield contracted)
• 1011.5mm (including the 4 piece adapter as dew shield contracted)
• 889.5mm (including 1.25″ eyepiece holder as dew shield fully stretched)
• 1061.5mm (including the 4-piece adapter as dew shield fully stretched)
• Rear end of the 4-piece photographic adapters: M48x0.75

FF130 APO is a Quadruplet with two ED glasses which offers excellent control of chromatic and other aberrations

60mm image circle

FF130 APO supports medium-format cameras, such as AS1461, which gives you a larger field of view. The stars are small and round with a central RMS radius of 2um.

Self Flattening design

No need for a separate field flattener, FF130 APO eliminates the trouble of calculating the back focus distance of the flattener and connecting various accessories to achieve that distance. You can just connect any possible accessories you need. As long as the target is focused, the whole optical system is perfect for imaging.