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Passive PreAmp Volume Controller makes the desktop simple
the jacking height can be controlled freely
Contrast Ratio 2000:1
and has stronger wind resistance and resistance in the field environment
single touch
Maifeng40070 233x70 High Definition High Times Astronomical Telescope with Tripod, 233 x 70 % Abrasive Tools & Accessories Passive PreAmp Volume Controller makes1. Optical system: refractive 2. Objective lens diameter: 70mm 3. Focal distance: 400mm 4. Focus ratio: F5. 7 5. Eyepiece diameter: 10mm 25mm 6. Magnification: 40X 16X 7. Finderscope: 5x24 8. Zenith mirror: 48 degree positive zenith mirror 9. Horizontal field of view: 61FT (19m) 10. Optical coating: AR coating 11. Barlow magnification mirror: 3X 12. Exit pupil diameter: 2. 2mm 13. Resolution: <=4. 0 14. Distortion: 4. 9% 15. Light collection power:
US$ 499.50
US$ 649.50
US$ 1249.50