Takahashi TSA-120
Takahashi
Takahashi TSA-120 is a 120 mm Triplet super-apochromat refractor for deeper refractor imaging, smaller galaxies, and high-quality visual observing.
Best Current Offer
Specifications
Optics
- Optical design
- Triplet super-apochromat refractor
- Aperture
- 120 mm
- Focal length
- 900 mm
- Focal ratio
- f/7.5
- Dawes limit
- 0.97"
- Glass / elements
- Air-spaced triplet objective
Imaging
- Camera format
- Full frame / APS-C with matching corrector
- Full-frame coverage
- Yes
Specifications
- Weight
- 14.77 lb (6.7 kg)
Mechanical
- Focuser
- 2.7-inch rack-and-pinion focuser
Astrophotography Fit
Best for deeper refractor imaging, smaller galaxies, and high-quality visual observing when the mount, camera format, and correction hardware are chosen as one system.
Takahashi TSA-120 sits in the telescope slot for deeper refractor imaging, smaller galaxies, and high-quality visual observing. The useful headline specs are aperture 120 mm, focal length 900 mm, f/7.5.
Camera coverage: Full frame / APS-C with matching corrector.
Refractors keep the field routine calmer: no regular collimation, predictable cooldown, and a clean path to autofocus and filtered imaging. The tradeoff is aperture and reach.
Best paired with
- Corrected field flattener or reducer when the design requires one
- Cooled APS-C or smaller astro cameras matched to the image circle
- Autofocus, guide scope or OAG, and a mount with comfortable payload margin
Not recommended for
- Large full-frame sensors unless the corrected field supports them
- Very small travel mounts near their realistic imaging payload limit
- Buyers expecting one telescope to be ideal for every target size
Where To Buy
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Astronomics Astronomics | $4,450.00 | In stock Updated 5/15/2026 | View Offer - $4,450.00 |
| Cloud Break Optics Cloud Break Optics | $4,450.00 | In stock Updated 5/10/2026 | View Offer - $4,450.00 |