Binoculars & Telescopes › 40 mm › Accessory

American Defense Manufacturing AD-RECON-S 30 MOA Scope Mount Standard Lever Bl... American Defense Manufacturing AD-RECON-S 30 MOA Scope Mount Standard Lever Black 40mm AD-RECON-S-30MOA 40 STD. 5 oz Condition: New Package Contents: American Defense Manufacturing AD-RECON-S 30 MOA Scope Mount American Defense Manufacturing... more

Description: Engineered with high quality and offering a generous 48 degreeapp... Description: Engineered with high quality and offering a generous 48 degreeapparent field of view;perfect for lunar observations;medium sized star clusters;provide a wide range of cloudy nebulas and deep sky . Soft rubber eye guard that is custom... more

100% brand new and high quality Features: Made of high-quality aluminum alloy ... 100% brand new and high quality Features: Made of high-quality aluminum alloy material durable and long service life. It is suitable for the mounting plate of astronomical telescope and can also be used as the handle of astronomical telescope. Mounting... more

Explore Scientific 68 Deg. 40mm Argon-Purged Waterproof Eyepiece 2 Barrel Explore Scientific 68 Deg. 40mm Argon-Purged Waterproof Eyepiece 2 Barrel more

Explore Scientific 40mm 68 degree Series Argon-Purged Waterproof Eyepiece EPWP... Explore Scientific 40mm 68 degree Series Argon-Purged Waterproof Eyepiece EPWP6840-01. This eyepiece by the professionals at Explore Scientific uses advanced computer design combinations of low dispersion and high refractive index optical glasses and... more

Athlon Optics Midas CF40 40mm Tube Carbon Fiber Tripod Black/Tan 706005. Sleek... Athlon Optics Midas CF40 40mm Tube Carbon Fiber Tripod Black/Tan 706005. Sleek and incredibly portable this Tripod from Athlon Brand comes with a rubber feet and spiked feet combo that is perfect for nearly any situation you can imagine. The included... more

Free Express Shipping! Explore Scientific 52° Series 40mm Eyepiece (2") 40mm F... Free Express Shipping! Explore Scientific 52° Series 40mm Eyepiece (2") 40mm Focal Length, 52° Apparent Field of View, 2" Diameter Barrel, Fully EMD Multi-Coated Optics, Argon-Filled, Water and Fogproof, Slip-Resistant Textured Surface, Fold-Down Eyecup more

Free Express Shipping! Tele Vue Plossl 40mm Eyepiece (1.25") 40mm Focal Length... Free Express Shipping! Tele Vue Plossl 40mm Eyepiece (1.25") 40mm Focal Length, 43° Apparent Field of View, 1.25" Diameter Barrel, Ideal for Fast Focal Ratio OTAs, Diffraction-Limiting High-Index Glass, Multi-Coated Optics with Blackened Edges,... more

Free Express Shipping! Pentax XW40-R 40mm Wide-Angle Eyepiece (2") 40mm Focal ... Free Express Shipping! Pentax XW40-R 40mm Wide-Angle Eyepiece (2") 40mm Focal Length, Wide 70° Field of View, Extra-Low-Dispersion Lanthanum Glass, Large 2" Diameter Nosepiece, Exceptional 20mm Eye Relief, Fully Multi-Coated & Phase Coated,... more

Athlon Optics Midas CF40 40mm Tube Carbon Fiber Tripod Black/Tan 706005. Solid... Athlon Optics Midas CF40 40mm Tube Carbon Fiber Tripod Black/Tan 706005. Solid. Stability. Athlons carbon fiber tripods come ready to support your rifle with the included bowl mount or ball head. The ball head features Friction Control Fluid Pan... more

Explore Scientific 40mm 68 degree Series Argon-Purged Waterproof Eyepiece EPWP... Explore Scientific 40mm 68 degree Series Argon-Purged Waterproof Eyepiece EPWP6840-01. This eyepiece by the professionals at Explore Scientific uses advanced computer design combinations of low dispersion and high refractive index optical glasses and... more

Explore Scientific 62 degree 40mm Long Eye Relief Waterproof Eyepiece EPWP6240... Explore Scientific 62 degree 40mm Long Eye Relief Waterproof Eyepiece EPWP6240LE-01. 25-inch O.D. Specifications for Explore Scientific 62 Degree Waterproof Eyepiece: Manufacturer: Explore Scientific Condition: New Color: Black Included Accessories:... more

GALILEO G-SFB40 Solar Filter Cap designed to fit Cassini and Galileo 40mm Bino... GALILEO G-SFB40 Solar Filter Cap designed to fit Cassini and Galileo 40mm Binoculars.Filter CAP... measurement is approximately 2 (51mm inner diameter) in width.Measure the outside diameter size of the binocular at the objective lens. Should measure 50... more

Smithsonian 40mm Refractor Telescope w/Table Top Tripod Smithsonian 40mm Refractor Telescope w/Table Top Tripod more

Ricoh Imaging is pleased to announce the release of the XW30-R and XW40-R eyep... Ricoh Imaging is pleased to announce the release of the XW30-R and XW40-R eyepieces as part of the Sports Optics Line. These eyepieces are specially designed to offer an excellent field of view while the fully multi-coated lenses increase light... more

Explore Scientific 52 Degree Series 40mm Waterproof Eyepiece 2 Barrel Explore Scientific 52 Degree Series 40mm Waterproof Eyepiece 2 Barrel more

Description: Engineered with high quality and offering a generous apparent fie... Description: Engineered with high quality and offering a generous apparent field of view;perfect for lunar observations;medium sized star clusters; of cloudy nebulas and . Soft rubber custom fitted with a bayonet mount and folds down for the... more

Using advanced computer design combinations of low dispersion and high refract... Using advanced computer design combinations of low dispersion and high refractive index optical glasses and durable multilayer deposition coatings Explore Scientific 68° Series Argon-Purged Waterproof extreme wide field eyepieces are optimized to... more

Description: 1.25 inch 40mm low power plossl eyepiece gives the widest viewing... Description: 1.25 inch 40mm low power plossl eyepiece gives the widest viewing field along with extra sharpness and long eye . 4-element plossl design has a approx 52 degree AFOV. The optical lens minimizes internal reflection and maximizes contrast.... more

Description: 1.25 inch 40mm low power Plossl eyepiece gives the widest viewing... Description: 1.25 inch 40mm low power Plossl eyepiece gives the widest viewing field along with extra sharpness and long eye relief. 4-Element Plossl design has a approx 52 degree AFOV. Threaded for 1.25 inch astronomical filters. Comes with sturdy and... more