The complete ZenithStar 61 II: flattener and guidescope included
This performance of the William Optics ZenithStar 61 II It's the complete photo set: the same FPL-53 apochromat, but delivered with a field flattener and UniGuide 32mm guidescope. Unpack, connect your camera, and start shooting, without having to search for loose accessories.


Everything for guided astrophotography
The 61mm FPL-53 doublet with a 360mm focal length (f/5.9) provides a wide, color-pure field. The included flattener brings stars to sharp focus all the way to the corners on any DSLR or mirrorless camera, and the UniGuide 32mm guidescope allows for long exposures on an equatorial mount or star tracker right out of the box. Visual observation is also possible via the 2 to 1.25 inch adapter.
In the box
- Optical tube ZenithStar 61/360 II
- Field flattener
- UniGuide 32 mm guidescope
- Tube Rings
- Arca-Swiss and Vixen-Style dovetail
- 2 inch to 1.25 inch adapter
- Soft carrier bag
Featured accessories
A William Optics M48 Camera Adapter For your camera angle, the photo train makes it complete.
For whom yes, for whom no
Yes: for those who want to start with guided astrophotography all at once; the set is more affordable than the individual parts. No: for those who already have a flattener or guidescope; choose the bare OTA version and save the difference.
Specifications
| Optical design | Apochromat, FPL-53 doublet |
| Opening | 61 mm |
| Focal length | 360 mm |
| Opening ratio | f/5,9 |
| Flattener | Included |
| Guidescope | UniGuide 32 mm (included) |
| Ocula Connection | 2 inch, with 1.25 inch adapter |
| Execution | OTA-set (loose tube with accessories) |
Unsure about the right tube for your camera and mount? The telescope selection aid helps you choose. Also view all Refracting telescopes and the full range of William Optics.





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