TEL: 604-998-7071     Hello Guest, Login / My Account

Takahashi TSA-120 Triplet Refractor Telescope with EM-200 Temma II Mount
Takahashi TSA-120 Triplet Refractor Telescope with EM-200 Temma II Mount

Takahashi TSA-120 Triplet Refractor Telescope with EM-200 Temma II Mount

. Use Live Chat for questions. or to leave your message for us to reply to within a couple of hours.
. Satisfaction Guarantee: 30 Days no Hassle Return (Terms & Conditions Applies)
. Multiple Payment Options ( All Debit, Credit Cards, EMT, Wire Transfers, Financing)
. Canadian Based Company, 100% Secure Ordering

Your Price: CAD22,538.53
Scheduled Delivery
Part Number:TSS0121

Choose Options or Accessories if Applicable

Focusers, Extenders & Reducers
Flatteners & Correctors
Finder Scopes & Brackets
TKA00551 6X30 Finderscope (+CAD319.00)
TKA00552 7X50 Finderscope (+CAD559.00)
TKA00552Y 7X50 Finderscope (Yellow) (+CAD609.00)
TKA00562 6X30 FINDER BRACKET (+CAD99.00)
TKA00563 7X50 FINDER BRACKET (+CAD159.00)
TKA00562BB 6X30 FINDER BRACKET (Blue Black) (+CAD89.00)
TKA00563BB 7X50 FINDER BRACKET (Blue Black) (+CAD179.00)
TKA00569 7X50 FINDER BRACKET (CCA-250) (+CAD149.00)
SBP08110 Starbase 80 6x30 finder w/brakcet (+CAD109.00)
Tube Holders
Eyepiece Accessories
Camera Angle Adapters & T-rings
Ships Worldwide - Estimate import fees, duties, and taxes. help
Simulate views with this scope and various eyepieces help

Are you ready for more Takahashi innovations? You asked for superior quality optics in a portable package and you got it... the Takahashi TSA-120. 

The "T" stands for Triplet and an air-spaced triplet design is exactly what you'll get. Inside the precision crafted lens cell, you'll find three elements, two extreme quality crown and flint glass, with an FPL-53 Extra-low Dispersion glass element sandwiched in between. While traditional refractor designs use oil in between elements, Takahashi doesn't... that means no oil to possibly leak out or become opaque with age. 

The "SA" stand for "Super Apochromat" and Apochromatic means you're free from those strange violet glows which often accompany bright stars or planets. The lens cells are durably constructed to withstand transport - yet are fully able to be collimated should the owner wish to make adjustments. Just like its little brother, the TSA-102S, the optics on the Takahashi TSA-120 will be, we are sure, as near to perfection as you can get! The color free images produced will delight the lunar, planetary and deep sky observer with very high contract images with pinpoint stars. 

But now, let's go it one better by adding a Takahashi EM-200 Temma II Mount! 

The Takahashi EM-200 Temma II is an accurate, precision-built GoTo German equatorial mount that provides a stable platform for payloads of up to 40 pounds. It is an ideal mount for any type telescope, be it a refractor, reflector, or cassegrain. The modern aesthetic design of the EM-200 is highly attractive as well as beautifully functional. The RA and DEC stepper motors are fully integrated into the mounting,and the high precision design and construction provides cyclic errors lower than +/- 5 arc seconds. 

The integrated polar alignment telescope has an illuminated reticule which can be dimmed to suit the user or observing conditions. In conjunction with the precision altitude and azimuth adjusters, this will typically give polar alignment accuracy within 2 minutes of arc of the celestial pole. Included in this package are an RS232C cable, ST-4 or ST-7 cable, shaft encoders, hand controller, power cord for both 12V and 24V operation.

The new style EM-200 mounts include the ability for operation on 12v or 24v and feature high speed slewing at 700x at 12v and 700x at 24v. 12V operation takes place with the use of the hand controller only (12v DC only for high speed operation). The mount will then function just like the EM-200 USD model (no GoTo functions). However, with the use of the hand controller and your PC, you can operate with 12V or 24V (two 12V batteries connected in series). 12V will give you a slewing speed of up to 700X sidereal, and 24V will produce slew speeds of up to 700X. A hand controller and power cable for 12V/220V battery connection is included. A PC is required for GoTo operations.

Takahashi TSA-120 and EM-200 Temma II Features...

  • Aperture: 120mm - Focal Length: 900mm - Focal Ratio: 7.5
  • Tube Length with Dew Shield: 990mm - Tube Diameter: 125mm - Diameter of Dew Shield: 713mm (28") - Weight: 12.6 lbs
  • Resolution: 0.97 - Limiting Magnitude: 12.1 - Back Focus: 227.5mm (8.93")
  • With TOA-35 Flattener:Focal Length: 882mm - Focal Ratio: f/7.3 - Optical Performance: 7 micron RMS-spot to 20mm off axis - Image Circle: 40mm - Image Field: 2.6" diameter.
  • With TOA-35 Reducer: Focal Length: 672mm - Focal Ratio: f/5.6 - Optical Performance: 4 microns RMS-spot on axis, 6 microns 10mm off-axis, 13 microns 20mm off-axis, 40mm/3.4" field
  • German Equatorial Mount - R.A. and DEC. Slow-Motion Motor driven. Encoders Included.
  • Azimuth Adjustment ± 15° - Elevation 10 to 48° - Polar Finder / Accuracy Built-in / 2' - 4.45 degrees - R.A. Setting Circles Accuracy 10 arcminutes - DEC. Setting Circles Accuracy 2°.
  • Weight (without counterweights) 15 kg - Counterweights 2 x 5kg - Maximal Loading Capacity 18 kg (without counterweights) - Optimal Loading Capacity 15 kg (without counterweights).
  • Operating Voltage 12V / 24V DC - 12v DC only for high speed operation - Power Consumption NC
  • Tube Mounting 2 x M8 screws (35mm) - Mounting Capacities Tube rings, plates and dovetail mounting plates,
  • R.A. axis diameter. (material) 40 mm (bronze) - R.A. worm gear shaft diameter (material) 18 mm (iron) - R.A. gear diameter (material) 92 mm/180 teeth (bronze).
  • DEC. axis diameter (material) 40 mm (iron) - DEC. worm gear shaft diameter (material) 18 mm (brass) - DEC. gear diameter (material) 92 mm/180 teeth.
  • Stepper Motors Accuracy 50 PPS - Slow motion speeds 0,1x to 1,9x sidereal rate - High speed mode 700x sidereal rate.
  • Worm gear shaft cycle 8 minutes - Tracking accuracy ± 5" - Autoguiding SBIG ST-4/7 compatible

Manufacturer Takahashi
Telescope Series Takahashi TSA
Optical Design Refractor - Apochromatic
Mount Type Equatorial - Motorized w/GoTo Option
Warranty 5 Year Warranty
Telescope Aperture 4.7"
Secondary Aperture N/A
Telescope Focal Length 900mm
Telescope Focal Ratio f/7.5
Back Distance 227.5mm
Image Circle 40mm
Image Across Field 2.6"
Optical Coatings Fully Multi-Coated
Limiting Stellar Magnitude 12.8
Highest Useful Magnification 300x
Optical Tube Outer Diameter 125mm
Length of Optical Tube 28"
Optical Tube Weight 15.4 lbs.
Tube Color or Finish Gloss White
Finder Included 7 x 50 Optical Finder
Eyepiece(s) Included 18mm LE
Diagonal Included? Yes - 1.25" Star Diagonal
Dew Shield Included? Yes
Dew Shield Outside Diameter 160mm
OTA Mount Type Dual Rings
Power Adapter Included DC Cigarette Lighter Adapter
Objects in Database N/A
Hand Controller Included? Yes
Alignment Procedure EQ North Align, EQ South Align
Counterweights Included (1) 12.12 lb.
GPS Included? No
Mount Weight 33 lbs.
Total Telescope Weight 52.6 lbs.
Tripod Type Included SE-L Wood Tripod

What's in the Box
  • Takahashi TSA-120 Triplet APO Refractor
  • MEF Fine Focuser
  • Finder Quick Release Bracket
  • TSA-120 Tube holder
  • 7x50 Finder
  • 2” Compression Ring Ocular Adapter
  • 1 ¼” Compression Ring Adapter w/ Coupling
  • 2 ea. 72mm Extension Tubes
  • Metal Focuser Rear Cover and 2” Sleeve
  • Takahashi EM200 Equatorial Mount with Temma 2
  • Polar Alignment Scope
  • Hand Controller
  • Hand Controller Cable
  • Autoguider Cable
  • Serial Cable for PC
  • Power Cable
  • SE-L Tripod
  • 1 ¼” Diagonal
  • LE-18mm MC Ocular

Based on Astronomy magazine’s telescope "report cards",
scopes of this size and type generally perform as follows . . .
Terrestrial Observation: No
Lunar Observation: Great
Planetary Observation: Very Good
Binary and Star Cluster Observation: Very Good
Galaxy and Nebula Observation: Good
Photography: Yes
Terrestrial Photography: No
Lunar Photography: Yes
Planetary Photography: Yes
Star Cluster / Nebula / Galaxy Photography: Yes

Customer Reviews:
You will not be disappointed with the Tak 120. You will have to keep reminding yourself that this is only a 120mm aperture scope. And they are as/almost as portable as most 4” refractors.

Below is “part” of what Jim Phillips had to say (right here on CN) about his Tak 120. Jim is very experienced refractor user and observer.


“Over the years I have owned and used a variety of apochromatic refractors from AP, TEC and TMB/APM from 4" to 10" apertures. They are/were all top quality telescopes. I have become interested in imaging over the past 10 years and use apos for that purpose. In, fact as I became more and more into imaging I observed visually less and less. Until recently I spent only occasional time (usually of relatively short duration) at the eyepiece.

I decided I wanted to get back to doing some visual observations and decided the best way was to get a "small" aperture apo that I might not be so tempted to use for imaging. Also, as quality double star observations can be done with small aperture scopes and is of interest to me I decided I wanted something between 4" and 5" aperture. Enter the takahashi TSA 120.

To me the star test is perfect.

Last night something amazing happened. I was observing visually with the Tak TSA 120 and imaging Saturn with my TMB 8" F/9. The seeing was Very Good. I used the Tak on doubles. At the end of the session I put a 5mm Pentax XW in the 8" and was amazed at the beauty. I could see everything that was visible on the laptop screen while imaging (not always the case I assure you). Then, I went outside the observatory to the Tak. I had a binoviewer in and the scope was centered on Porrima. I hit the Goto to Saturn (AP MachI) and sat back as the scope turned to it. When I looked in there it was. I was shocked!! The view was as good (better?) than the view with the 8"! The image was bright, sharp and extremely crisp. I was using about 339X on the TMB and 180X on the TSA 120 with binoviewer. I saw a faint moon near the polar region of the globe with the 8". Knowing where to look I was able to see it with averted vision in theb Tak. Now, I am not saying the Tak is as good as the 8" TMB. The 8" F/9 TMB is a super scope. In retrospect I should have backed off magnification and used the binoviewer with the TMB. But, to be honest, I was too amazed/shocked to think about it.

This is my first Takahashi. It is an amzing scope with exquisite optics.”

Jim Phillips

Related Items

Recently Viewed Items