Takahashi - Sky 90II 90mm 3.5" f/5.6 Fluorite APO on EM-200 Temma II Mount

• 90mm f/5.6 Fluorite Doublet APO will blow you away!


• EM-200 Temma II Mount handles a payload of up to 35 lbs.


• GoTo control via PC.


• High precision construction results in periodic error less than +/- 5 arc seconds


• Includes built-in polar finder with adjustable illuminator.


• Includes SE-L wooden tripod with Shimano Clamps.


• Now comes with BT Technologies finder bracket quick release!

The latest telescope model from Takahashi is a truly portable design. The 90mm (3-1/2") f/5.6 fluorite doublet apochromatic optical system is of outstanding quality, with a focal length of 504mm. The optical tube assembly is only 13.8" long and weighs 7 pounds; small enough for an airline 'carry-on'.

Not only is this instrument an excellent choice for astronomy, it can be used as a portable high-quality telescope for birding. The oversize focuser has an adapter for 2" and 1-1/4" diagonals, and accepts the FS series photographic adapters.

The Mount:

The 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.

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, and software.

The new style EM-200 mounts include the ability for operation on 12v or 24v and feature high speed slewing at 350x [sidereal rate] at 12v and 700x at 24v. 12V operation takes place with the use of the hand controller only. 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 350X sidereal, and 24V will produce slew speeds of up to 700X. Your PC is required to actuate the GoTo functions on this mount. A dual-axis hand controller and power cable for 12V/220V battery connection is included.

Shipping charge is for 2nd Day Air which is required by Takahashi

Included Items for Sky 90II 3.5" f/5.6 Fluorite APO on EM-200 Temma II Mount:

• Sky-90II Fluorite APO Refractor OTA


• EM-200 Temma II Mount


• SE-L Tripod


• 6X30 Finder


• Finder Bracket


• BT Technologies Finder Bracket Quick Release


• Tube Holder


• Compression Ring Diagonal Prism


• 18mm LE 1.25" Eyepiece 

The Sky 90 is the latest short tube fluorite apochomatic from Takahashi. With a focal ratio of f/5.56 and atube length of 13.8", the Sky-90 is the most compact production apochomat. The newly designed objective delivers very sharp color free images.

The Sky 90 is fully multicoated and uses knife edged baffles to produce the lengendary Takahashi contrast. The 2.5" focuser and newly designed compression ring adapter allows the use of any combination of 1.25" or 2" diagonal=ocular combinations.

When coupled with the f/4.5 flattener/reducer, the Sky 90 can be used as an astro camera or ultra-wide field instrument. Not only is the Sky 90 an excellent choice for sky viewing, its very short length makes it a portable high quality telescope for birding or for total solar eclipse photography.

The Sky 90 fits easily into any airline overhead compantment. The optional rigid soft case provides protection for this 7 lb. instrument. The Sky 90 is truly a compact and convenient world traveler.