Apochromatic Refractors
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Apochromatic Refractors
We can offer you a range of very high quality refractors in this category. These include e.g. our two- and three-lens APM Apo instruments, our astrograph series, available as APM or APM-LZOS models. Equipped with Riccardi reducers / correctors or as a high-end version CNC LW II with Feathertouch extracts. All around excellent instruments that should leave no wishes.
The Esprit-100EDX from Skywatcher offers the highest optical and mechanical quality and is optimized for astrophotography.
- Aperture 100 mm
- Focal length 550 mm (focal ratio f/5.5)
- Triplet apo objective with FPL53 ED element
- Improved 3" dual-speed focuser for high payload
- 360° rotation
- 2" connection with additional thread for screw adaptations
- Dew shield (fixed)
- Carrying handle, Losmandy style dovetail bar, carrying case
Dec 01 2025
The Esprit-120EDX from Skywatcher offers the highest optical and mechanical quality and is optimized for astrophotography.
- Aperture 120 mm
- Focal length 840 mm (focal ratio f/7)
- Triplet apo objective with FPL53 ED element
- Improved 3" dual-speed focuser for high payload
- 360° rotation
- 2" connection with additional thread for screw adaptations
- Retractable dew shield
- Carrying handle, Losmandy style dovetail bar, carrying case
Dec 01 2025
The Esprit-150EDX from Skywatcher offers the highest optical and mechanical quality and is optimized for astrophotography.
- Aperture 150 mm
- Focal length 1050 mm (focal ratio f/7)
- Triplet apo objective with FPL53 ED element
- Improved 3" dual-speed focuser for high payload
- 360° rotation
- 2" connection with additional thread for screw adaptations
- Retractable dew shield
- Carrying handle, Losmandy style dovetail bar, carrying case
Dec 01 2025
Takahashi Extension Tube (FL), Short Distance Ring
- Connection (object side): M56x0,75(neg)
- Connection (observer side): M56x0,75(pos)
- lightpass: 17,5mm
- Shipping weight: 1kg
- Connection: M56x0.75
- Extension factor: 1.04x
- Number of lenses: 2
The compact FS-60CB Apo can be upgraded to a 60/600 f/10 quadruplet Apo with this 1.7x Q module. Optically, this version is superior to the FS-60CB ...
- Extension factor: 1.7x
- Number of lenses: 2
This extender is suitable for the Takahashi fluorite apochromats FS-60CB, FS-60Q, FC-76D (both versions), FC-76Q, and FC-100D (all versions). However, it is also compatible with the older Sky-90 and FSQ-106 fluorite models, which are no longer manufactured. Of course, it can also be used with many other devices as a moderate focal length extension.
- Connection: M43x0.75(pos)
- Extension factor: 1.6x
- Number of lenses: 5
