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Thứ tự theo mức độ phổ biếnThứ tự theo điểm đánh giáMới nhấtThứ tự theo giá: thấp đến caoThứ tự theo giá: cao xuống thấp

Hiển thị một kết quả duy nhất

• Light Grasp: 165x
• Resolution: 1.30″
• Image Circle: 45mmý w/reducer
• Photo Field: 5.1 degree w/reducer

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 ~ +30 degree C
• Go-To Operation: By a PC or Takahashi hand controller (THC)
• Go-To Disc: Pegasus 21
• Accessory: RS232C cable or RJ-11 cable

Takahashi Sky-90 II 3.54″ f/5.6 APO Refractor Specifications

• Optical Design: Apochromatic Fluorite Doublet Refractor
• Aperture: 3.5″ (90mm)
• 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

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