Because the center image is very sharp, it has received a high reputation especially from the eyes.- [Large barrel] Effective diameter 200mm/precision spherical, multi -coating Focal length (caliber ratio f) 1,950mm (F9.75) Resolution/Extreme grade 0.58 seconds/13.3 stars light -collecting power 816 times the naked eye Size/Weight Length 510mm outer diameter 232mm 6.8kg (main body 5.9kg) Finder Dark view 7 times 50mm real view 7 degrees [Eye portion] parts mounting size screw -included/60mm/42mmT ring screw insert/50.8mm*・ 31.7mm (with flip mirror) eyepiece lens ( * Note) (31.7mm diameter) SLV20mm (98 times, 31 minutes of real view) SLV9mm (217 times, 14 minutes of real view) *… 50.8mm When using eyepiece, optional parts are required. ( * Note) Magnification conversion is possible by separate eyepiece. [Syuji] Material/Former 6 -type hexagonal aluminum 2 -step extension (one touch type) Size/Weight Length 807⇔1,299mm height (ground height) 730⇔156mm Installation radius 460⇔ 706mm 5.5kg [Others] Photography Enlarged, impatient, compact digital camera (collimating) shooting * Separate camera adapter, etc. are required Observation of the sun Not possible Total weight 23.2kg (optional eyepiece lens) Power Sold separately Warranty period 5 years warranty from the date of purchase * Electronic parts are warranty for one year