Specifications (Depending on Selected Model):
FF70 70mm F/7.0:
- Product Name: FF70 APO
- Effective Aperture: 70mm
- Focal Length: 490mm
- Focal Ratio: f/7.0
- Objective Type: Four-element air-spaced APO (includes 1 ED element)
- Image Circle: 44mm
- Maximum Rear Connection Length (Focuser Retracted)
Imaging Mode: 82.5 mm (measured from M48x0.75 male thread); 100.5 mm (measured from M54x0.75 male thread)
Observation Mode: 117 mm (measured from 1.25″ eyepiece holder); 127 mm (measured from 2″ eyepiece holder)
Overall Length: 372.5 mm (with 1.25″ interface retracted); 415 mm (with photography extension tube retracted); 430.9 mm (with 1.25″ interface extended); 473.4 mm (with photography extension tube extended)
- Telescope Body Weight: 2.5kg
- Standard Configuration Weight: 3.0kg (including handle, mounting rings, and dovetail plate)
- Rear Interfaces:
M64x0.75-M54x0.75
M54x0.75-M54x0.75
M54x0.75-M48x0.75 (built-in M48x0.75 filter thread)
- Interface of the three-stage imaging adapter: M48x0.75
FF90 90mm F/6.8:
- Product Name: FF90 APO
- Effective Aperture: 90mm
- Focal Length: 609mm
- Focal Ratio: f/6.8
- Objective Type: Four-element air-spaced APO (includes 1 ED element)
- Image Circle: 44mm
- Maximum Rear Connection Length (Focuser Retracted)
Imaging Mode: 75mm (measured from M48x0.75 male thread); 93mm (measured from M54x0.75 male thread)
Observation Mode: 112mm (measured from 1.25″ eyepiece holder); 122mm (measured from 2″ eyepiece holder)
Overall Length: 513mm (with 1.25″ interface retracted); 550mm (with photography extension tube retracted); 599mm (with 1.25″ interface extended); 636mm (with photography extension tube extended)
- Telescope Body Weight: 3.92kg
- Standard Configuration Weight: 4.52kg (including handle, mounting rings, and dovetail plate)
- Rear Interfaces:
M64x0.75-M54x0.75
M54x0.75-M54x0.75
M54x0.75-M48x0.75 (built-in M48x0.75 filter thread)
FF110 110mm F/7.0:
- Product Name: FF110 APO
- Effective Aperture: 110mm
- Focal Length: 766mm
- Focal Ratio: f/7.0
- Objective Type: Four-element air-spaced APO (includes 1 ED element)
- Image Circle: 44mm
- Maximum Rear Connection Length (Focuser Retracted)
Imaging Mode: 73mm (measured from M48x0.75 male thread); 91mm (measured from M54x0.75 male thread)
Observation Mode: 132mm (measured from 1.25″ eyepiece holder); 142mm (measured from 2″ eyepiece holder)
- Minimum Rear Connection Length (Focuser Retracted)
Imaging Mode: 42mm (measured from M48x0.75 male thread); 60mm (measured from M54x0.75 male thread)
Observation Mode: 101mm (measured from 1.25″ eyepiece holder); 111mm (measured from 2″ eyepiece holder)
- Overall Length: 664mm (with 1.25″ interface retracted); 728mm (with photography extension tube retracted); 751mm (with 1.25″ interface extended); 815mm (with photography extension tube extended)
- Telescope Body Weight: 5.74kg
- Standard Configuration Weight: 6.76kg (including handle, mounting rings, and dovetail plate)
- Rear Interfaces:
M78x1- 55mm Extension Adapter
M78x1 - M54x0.75
M54x0.75 - M54x0.75
M54x0.75 - M48x0.75 (built-in M48x0.75 filter thread)
FF131 131mm F/7.5:
- Product Name: FF131 APO
- Effective Aperture: 131mm
- Focal Length: 983mm
- Focal Ratio: f/7.5
- Objective Type: Four-element air-spaced APO (includes 1 ED element)
- Image Circle: 44mm
- Maximum Rear Connection Length (Focuser Retracted)
Imaging Mode: 73mm (measured from M48x0.75 male thread); 91mm (measured from M54x0.75 male thread)
Observation Mode: 131mm (measured from 1.25” eyepiece holder); 142mm (measured from 2” eyepiece holder)
- Minimum Rear Connection Length (Focuser Retracted)
Imaging Mode: 42mm (measured from M48x0.75 male thread); 60mm (measured from M54x0.75 male thread)
Observation Mode: 100mm (measured from 1.25” eyepiece holder); 111mm (measured from 2” eyepiece holder)
- Overall Length: 878mm (with 1.25” interface retracted); 941mm (with photography extension tube retracted); 963mm (with 1.25” interface extended); 1026mm (with photography extension tube extended)
- Telescope Body Weight: 7.9kg
- Standard Configuration Weight: 9.4kg (including handle, mounting rings, and dovetail plate)
- Rear Interfaces:
M78x1- 55mm Extension Adapter
M78x1 - M54x0.75
M54x0.75 - M54x0.75
M54x0.75 - M48x0.75 (built-in M48x0.75 filter thread)
Package Included:
- 1 x Set of APO
