ZWO FF65 Apo 65mm f/6.4 Petzval Refractor Telescope
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- Quintuplet air-spaced APO design. No need to calculate back focus
- Small and round stars, with a central RMS radius of 2.5um
- Various adapters: M68/M54/M48
- Dual speed (1:10) focuser. Supports both fine and coarse adjustment
- Self-flattening design. No need for a separate field flattener
The ZWO FF65 APO is a refractive astrograph with a 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 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.
The FF65 APO is also a nice choice for your visual observation. It fits diagonals as well as various eyepieces and can achieve a perfect focus, and can even be used to observe planets with a super high magnification eyepiece.
The whole design of the telescope is compact and lightweight. The OTA weighs only 2kg, and the full package with tube rings and other accessories weighs 2.8kg. It has an aperture of 65mm. The focal ratio is f/6.4 and focal length is 416mm. Instead of the quadruplet structure of other ZWO FF APO telescopes, the FF65 APO is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations.
The FF65 APO supports the full-frame imaging circle and has a fine spot diagram with tiny distortions of the peripheral stars. The 2.5" rigid focuser comes with a new type of 360 degree rotator with scales and a finder base. M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2" female thread for installing filters.
Quintuplet air-spaced APO
FF65 APO is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations.
44mm image circle
FF65 APO supports full frame cameras such as ASI6200 which gives you a larger field of view. The stars are small and round with a central RMS radius of 2.5um.
Self-flattening design
No need for a separate field flattener, the FF65 APO eliminates the trouble of calculating the back focus distance of the flattener and connecting varius 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.
Specifications:
- Observing mode: 121mm
- Aperture size: 65mm
- Focal length: 416mm
- Focal ratio: f/6.4
- Net weight: 2kg
- Gross weight: 2.8kg
- Image circle: 44mm
- Objective lens: Quintuplet air-spaced APO (including two ED glass)
- Dew shield OD: 88mm / 3.46"
- Imaging mode:
- 76mm (from the base of M48x0.75 male thread)
- 105mm (from the base of M54x0.75 male thread)
- 130mm (from the base of M61x1 male thread)
- Rear-end thread type:
- M68x1-M54x0.75
- M54x0.75-M54x0.75
- M54x0.75-M48x0.75
- (M48x0.75 filter thread inside)
- Total length:
- 328mm (including 1.25" eyepiece holder as dew shield contracted)
- 360mm (including the 3-piece adapter as dew shield contracted)
- 388mm (including 1.25" eyepiece holder as dew shield fully stretched)
- 420mm (including the3-piece adapter as dew shield fully stretched)
- Rear end of the 3-piece photographic adapters: M48x0.75
Other Information
- Country of Manufacture: China
- ZWO Warranty: One-year factory limited warranty for telescopes, two-years for Seestar units (but only one-year for Seestar batteries), and two-years for all other ZWO products.
The ZWO FF65 APO is a refractive astrograph with a 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 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.
The FF65 APO is also a nice choice for your visual observation. It fits diagonals as well as various eyepieces and can achieve a perfect focus, and can even be used to observe planets with a super high magnification eyepiece.
The whole design of the telescope is compact and lightweight. The OTA weighs only 2kg, and the full package with tube rings and other accessories weighs 2.8kg. It has an aperture of 65mm. The focal ratio is f/6.4 and focal length is 416mm. Instead of the quadruplet structure of other ZWO FF APO telescopes, the FF65 APO is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations.
The FF65 APO supports the full-frame imaging circle and has a fine spot diagram with tiny distortions of the peripheral stars. The 2.5" rigid focuser comes with a new type of 360 degree rotator with scales and a finder base. M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2" female thread for installing filters.
Quintuplet air-spaced APO
FF65 APO is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations.
44mm image circle
FF65 APO supports full frame cameras such as ASI6200 which gives you a larger field of view. The stars are small and round with a central RMS radius of 2.5um.
Self-flattening design
No need for a separate field flattener, the FF65 APO eliminates the trouble of calculating the back focus distance of the flattener and connecting varius 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.
Specifications:
- Observing mode: 121mm
- Aperture size: 65mm
- Focal length: 416mm
- Focal ratio: f/6.4
- Net weight: 2kg
- Gross weight: 2.8kg
- Image circle: 44mm
- Objective lens: Quintuplet air-spaced APO (including two ED glass)
- Dew shield OD: 88mm / 3.46"
- Imaging mode:
- 76mm (from the base of M48x0.75 male thread)
- 105mm (from the base of M54x0.75 male thread)
- 130mm (from the base of M61x1 male thread)
- Rear-end thread type:
- M68x1-M54x0.75
- M54x0.75-M54x0.75
- M54x0.75-M48x0.75
- (M48x0.75 filter thread inside)
- Total length:
- 328mm (including 1.25" eyepiece holder as dew shield contracted)
- 360mm (including the 3-piece adapter as dew shield contracted)
- 388mm (including 1.25" eyepiece holder as dew shield fully stretched)
- 420mm (including the3-piece adapter as dew shield fully stretched)
- Rear end of the 3-piece photographic adapters: M48x0.75
- FF65 APO
- Vixen dovetail plate
- A set of 3-piece photographic adapters
- Manual
- Note: No hard case is included with the 65mm ZWO scope
- Quintuplet air-spaced APO design. No need to calculate back focus
- Small and round stars, with a central RMS radius of 2.5um
- Various adapters: M68/M54/M48
- Dual speed (1:10) focuser. Supports both fine and coarse adjustment
- Self-flattening design. No need for a separate field flattener
The ZWO FF65 APO is a refractive astrograph with a 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 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.
The FF65 APO is also a nice choice for your visual observation. It fits diagonals as well as various eyepieces and can achieve a perfect focus, and can even be used to observe planets with a super high magnification eyepiece.
The whole design of the telescope is compact and lightweight. The OTA weighs only 2kg, and the full package with tube rings and other accessories weighs 2.8kg. It has an aperture of 65mm. The focal ratio is f/6.4 and focal length is 416mm. Instead of the quadruplet structure of other ZWO FF APO telescopes, the FF65 APO is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations.
The FF65 APO supports the full-frame imaging circle and has a fine spot diagram with tiny distortions of the peripheral stars. The 2.5" rigid focuser comes with a new type of 360 degree rotator with scales and a finder base. M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2" female thread for installing filters.
Quintuplet air-spaced APO
FF65 APO is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations.
44mm image circle
FF65 APO supports full frame cameras such as ASI6200 which gives you a larger field of view. The stars are small and round with a central RMS radius of 2.5um.
Self-flattening design
No need for a separate field flattener, the FF65 APO eliminates the trouble of calculating the back focus distance of the flattener and connecting varius 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.
Specifications:
- Observing mode: 121mm
- Aperture size: 65mm
- Focal length: 416mm
- Focal ratio: f/6.4
- Net weight: 2kg
- Gross weight: 2.8kg
- Image circle: 44mm
- Objective lens: Quintuplet air-spaced APO (including two ED glass)
- Dew shield OD: 88mm / 3.46"
- Imaging mode:
- 76mm (from the base of M48x0.75 male thread)
- 105mm (from the base of M54x0.75 male thread)
- 130mm (from the base of M61x1 male thread)
- Rear-end thread type:
- M68x1-M54x0.75
- M54x0.75-M54x0.75
- M54x0.75-M48x0.75
- (M48x0.75 filter thread inside)
- Total length:
- 328mm (including 1.25" eyepiece holder as dew shield contracted)
- 360mm (including the 3-piece adapter as dew shield contracted)
- 388mm (including 1.25" eyepiece holder as dew shield fully stretched)
- 420mm (including the3-piece adapter as dew shield fully stretched)
- Rear end of the 3-piece photographic adapters: M48x0.75
Other Information
- Country of Manufacture: China
- ZWO Warranty: One-year factory limited warranty for telescopes, two-years for Seestar units (but only one-year for Seestar batteries), and two-years for all other ZWO products.
| Telescope Focal Length | 401 - 500mm |
|---|
- FF65 APO
- Vixen dovetail plate
- A set of 3-piece photographic adapters
- Manual
- Note: No hard case is included with the 65mm ZWO scope