exit-pupil

The much-anticipated 10×42 L IS WP is the first waterproof binocular to incorporate Canon’s exclusive Image Stabilizer technology for steady, shake-free viewing. The high quality L series optics, featuring 2 Ultra-low Dispersion (UD) lens elements (on each side), deliver excellent correction for chromatic aberration. With a large lens diameter and a 4.2mm exit pupil diameter, [...]

Continue Reading Canon 10×42 L Image Stabilization Waterproof Binoculars

Specifications:20-140x, Field of View (ft@1000yds/m@1000m) =54/18@20x, Prism Glass: BAK-4, Exit Pupil (mm): 4.0, Close Focus (ft/m) 87/29, Eye Relief 21mm References :History of astronomy – Wikipedia the free encyclopediaBrightest supernova in decades serves up cosmic clues for …Bushnell Telescope – YouTubehipparchus – Online Science Dictionary | Free Online Science Term …

Continue Reading BARSKA Gladiator 20-140×80 Zoom Binoculars (Green Lens)

Specifications:12-60x, Field of View (ft@1000yds/m@1000m) =171/57@12x-51/17@60x, Prism Glass: BK-7, Exit Pupil (mm): 5.8-1, Close Focus (ft/m) 49/15, Eye Relief (mm) 14@12x BARSKA Escape Porro 12-60×70 Zoom Binoculars with Tripod Adapter (Green Lens) References :astrolabe: Definition from Answers.comSolar System Exploration: Science & Technology: Astronomy …Orion Telescopes & Binoculars – Wikipedia the free encyclopediaHow to Observe the [...]

Continue Reading BARSKA Escape Porro 12-60×70 Zoom Binoculars with Tripod

Specifications:8-24x, Area of View (foot@1000yds/m@1000) =225/75@8x, Prism Glass: BK-7, Exit Pupil (mm): 5.6, Close Focus (foot/m) 21.32/65, Eye Relief 20.0mm References :astronomy and cosmologyastronomy posts – Tech Talk – CBS NewsTELESCOPES.COM (Meade Star Chart) – YouTubeAstronomy Picture of the Day

Continue Reading BARSKA Gladiator 8-24X50 Zoom Binoculors (Ruby Lens)

Specifications:7-20x, Field of View (ft@1000yds/m@1000m) =294/98@7x~162/54@20x, Prism Glass: BK-7, Exit Pupil (mm): five-1.7, Close Focus (ft/m) 32/10, Eye Relief (mm) 14@7x References :Ancient Manuscripts In a Digital Age – WSJ.comCelestron SkyMaster 20×80 Astronomy Binoculars Review – YouTubeBBC Space – Explore the planets black holes stars and moreAstronomy for children encyclopedia topics | Reference.com

Continue Reading BARSKA Escape Porro 7-20×35 Zoom Binoculars (Green Lens)

Specifications:10-30x, Field of View (ft@1000yds/m@1000m) =186/62@10x-102/34@30x, Prism Glass: BK-7,Exit Pupil (mm):6-2, Close Focus (ft/m) 42/13, Eye Relief (mm) 14@10x References :BBC – Things To Do: Stargazing LIVE activitiesSagittarius: Information from Answers.comCurious About Astronomy? StarsUrsa Major: Definition from Answers.com

Continue Reading BARSKA Escape Porro 10-30×60 Zoom Binoculars (Green Lens)

Specifications:16x,20x, 25x, Field of View (ft@1000yds/m@1000m) =166/55@16x, 133/44@25x, Prism Glass: BAK-four, Exit Pupil (mm): four.four@16x, three.38@20x, 2.75@25x, Close Focus (ft/m)15/four.57, Eye Relief 22.2@16x, 15.five@20x, 12.five@25x BARSKA 16x 20x 25×70-mm Encounter Jumbo Binoculars with Tough Case References :Dunhuang Star Chart – Wikipedia the free encyclopediaStar cluster | Define Star cluster at Dictionary.comBBC News – Stargazing and [...]

Continue Reading BARSKA 16x 20x 25×70-mm Encounter Jumbo Binoculars with Hard

Specifications:20x, Field of View (ft@1000yds/m@1000m) =174/58, Prism Glass: BK-7, Exit Pupil (mm): 5, Close Focus (ft/m) 32/10, Eye Relief (mm) 8 References :How to Find the North Star (with pictures)Outreach SpotlightChinese astronomy – Wikipedia the free encyclopediaStar chart – Wikipedia the free encyclopedia

Continue Reading BARSKA Escape Porro 20×50 Binoculars (Green Lens)