Details
- 90mm f/5.56 Fluorite APO refractor yields beautiful,high-contrast views.
- OTA weighs only 7 lbs., great travel scope.
- EM-11 Temma II, Jr. is a GoTo Mount that can handle a payload of up to 25 lbs.
- 10 arc-second or better tracking accuracy.
- Now comes with BT Technologies finder bracket quick release!
- Includes wooden tripod with Shimano Clamps.
The latest telescope model from Takahashi is a truly portable design. The 90mm (3-1/2") f/5.56 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.
Features for the EM-11 Temma II, Jr. Mount:
- Drive System: Dual axes, quartz control, driving frequency: 100pps N/S, Star/Sun switching by hand controller
- Useable Area: All over the world, but with limit for the latitude
- High Speed Drive: 120X at DC12V, 250X at DC24V
- Correcting Speed (Manual Operation): RA: 0.1 ~ 1.9x to the sidereal rate by 0.1X increments. Dec: +/- 1.5 ~ 13.5 arc sec/sec by 1.5 arc sec/sec increments
- Mode Indicator: High speed operation - red light. Normal operation: green light
- Power Source: DC12V or DC24V
- Power Consumption: DC12V: 0.3/1.3A (1.7A) sidereal/high speed (start). DC24V: 0.3/1.9A (1.9A)
- Operational Temperature: -5 ~ +30ºC
- Go-To Operation: By a PC or Takahashi hand controller (THC)
- Go-To Disc: Pegasus 21
- Accessory: RS232C cable or RJ-11 cable
Included Items for Sky-90 II - 3.54" f/5.6 APO Refractor on EM-11 Temma II, Jr. Mount:
- FCL-90 Tube Assembly
- EM-11 Temma II, Jr. Mount
- FC-L Wooden Tripod w/ Shimano Clamps
- Tube Holder
- 6X30 Finder
- Finder Bracket
- BT Technologies Finder Bracket Quick Release
- 18mm LE Eyepiece (1.25")
- 1.25" Compression Ring Diagonal
Specifications for Sky-90 II - 3.54" f/5.6 APO Refractor on EM-11 Temma II, Jr. Mount | ||
| Optical Design | Apochromatic Fluorite Doublet Refractor | |
| Aperture | 90mm (3.54") | |
| Limiting Visual Magnitude | 11.5 | |
| Focal Ratio | f/5.56 | |
| Focal Length | 19.8" (504mm) | |
| Optical Tube Dimensions | 3.7" X 14.5" (95mm X 370mm) | |
| Focuser Design | Rack & Pinion | |
| Mount Type | German Equatorial | |
| Drive System | Motorized with GoTo Capabilities | |
| Weight - OTA | 7 lbs. (3.2 kg.) | |
| Weight - Mount | 24.2 lbs. (11 kg.) | |
| Counterweights | 1 - 7.7 lb. (3.5 kg.) | |
| Optical Coatings | Fully Muli-Coated |
Product Series
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.
Additional Information
| Model | TSS9033 |
|---|---|
| Weight | 105.0000 |
