유효구경 : 80mm 초점길이 : 800mm 초점비율 : F/10 파 인 더 : 5x24 접안렌즈 : K9(88.9배), K20(40배) 마 운 트 : 적도의식 마운트 삼 각 대 : 알루미늄 - 초보(입문자)를 위한 800mm 굴절 적도의식 망원경 - 5x24 파인더(탐색경) 제공 - K9(88.9배), K20(40배) 접안렌즈 2매 제공
Specifications Fieldmicroscope Magnification (x) 20x (fixed) Optical system Upright, unreversed image; eyepiece diopter adjustable for right eye; 56-to-72mm interpupillary distance adjustment Field of vision (mm) 11 (diameter) Angle of view (º) 12.6 Vertical adjustment 50mm from the base of stage Eye relief (mm) 11.1 Plate Removal and reversible (top: flat; underside: built-in cup) Light source 2.5V-0.5A halogen lamp Light settings On/off Power source CR 123A lithium battery; approx. 1-hour bat
PLOSSL 30mm 접안렌즈 내부 무반사 흑탄 널링처리 Fully Multi-Coated 렌즈 사용, 뛰어난 별상 제공 규격 : 2인치 체감시야각 : 55˚
Easy blowing, High tone dog whistle, fitted with solid, waterproof pearl, to give a trill for those who want a distinctive and different sound. With a frequency that fluctuates by 750 Hertz. 210 Small ultra high pitch whistle has a natural cork ball which produces the familiar 'trilling' roll of the pea whistle. 210.5 Same as the 210 but with out the cork ball, produces a single extremely high frequency.