Takahashi Sky 90II Fluorite Refractor
- 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
|Name||Takahashi - Sky 90II 90mm 3.5" f/5.6 Fluorite Refractor Apochromatic Telescope - (EM-11 Temma IIM Mount) - DISCONTINUED|
|Counterweights||1 - 7.7 lb|
|Focal Length||19.8" (504mm)|
|Focuser||Rack & Pinion|
|Limiting Stellar Magnitude||11.5|
|Motor Drive||Motorized with GoTo Capabilities|
|Mount Weight||24.2 lbs|
|Optical Coatings||Fully Muli-Coated|
|Optical Design||Apochromatic Fluorite Doublet Refractor|
|Optical Tube Length||14.5"|
|Optical Tube Weight||7 lbs|