8x21 Foldable Roof-Prism Binoculars Aperture_4. 170mm + 25" H-Beta Range from 478nm

25" H-Beta Range from 478nm to 496nm with peak at 489nm

50mm Aperture Telescope: Explore the Moon’s cratered surface

making them ideal for both visual observing and astrophotography

this device will reduce your f-ratio by 0

Precision Tweezers: Allows for gentle handling of delicate specimens

8x21 Foldable Roof-Prism Binoculars Aperture_4. 170mm + 25" H-Beta Range from 478nmThese pocket binoculars have a compact and attractive design. The fully coated BK 7 optics and solid mechanics enable a true color picture replication. These models have diopter compensation and foldable eyepieces for spectacle wearers as well as a functional bag.