● Uses 102mm acromace lenses for objective lenses ● Multi -coating on an objective lens ● Bright and easy to see 9x50 viewfinder ● Eye sizes / 31.7mm (can be mounted), 50.8mm ● A good aluminum focus knob ● A lens band with a tripod screw.The camera can be attached via the separately sold "Free Unlait".- Type of astronomical telescope Contact type objective lens/main mirror with effective diameter 102mm Focal Distance 500mm Extreme grade 11.81 Master F value 5 light -collecting power 212.32 times Resolution 1.14 seconds Finder 9 times 50mm Size: Lighter: outer diameter 116mm x length 540mm (including food) Weight: Large barrel: 4.0kg (without ironing) eyepiece size (sleeve diameter) ・ φ31.7mm * T -mount can be attached ・ φ50.8mm Accessories 9 × 50mm viewfinder, zenith mirror, probable iron (PL10mm/PL25mm)