"High-quality, affordable 15mm telescope eyepiece offers a wide field of view and superior performance at a bargain price. | Generous 14.8mm eye relief allows comfortable viewing distance and lets eyeglass wearers see the entire field of view. | Wide 66-deg apparent field offers expansive views of the moon, star clusters, and the Milky Way. | 5-element design delivers sharp images with good color correction and contrast. | Aluminum 1.25"" eyepiece barrel is internally blackened to eliminate light scattering, and is threaded to accept 1.25"" filters. "

"High-quality, affordable 20mm telescope eyepiece offers a wide field of view and superior performance at a bargain price. | Generous 14.8mm eye relief allows comfortable viewing distance and lets eyeglass wearers see the entire field of view | Wide 66-deg apparent field offers expansive views of the moon, star clusters, and the Milky Way. | 5-element design delivers sharp images with good color correction and contrast. | Aluminum 1.25"" eyepiece barrel is internally blackened to eliminate light scattering, and is threaded to accept 1.25"" filters.

finder bracket for all 60 mm finders and mini guide scopes with 60 mm - matches standard finder bases. | Inner diameter of the tube rings is 80 mm . suitable for all 50mm and 60mm finders and guide scopes. | Due to six high-quality adjusting screws, you have perfect adjustment stability and optimal stiffness. | You can insert tubes from 54 mm diameter to 78 mm diameter into the bracket and adjust them. | The bracket fits to common finder shoes like from Sky-Watcher, Celestron, Baader-Planetarium, Vixen, GSO, TS-Optics, Orion, Omegon, etc.

Compliable with Binocular, monocular, telescope, microscope, spotting scope, night vision and most optical device. | Suitable for smartphones with super large width range: 54-90mm, Fit iphone iphone 7plus,7,6plus,6,5s,5,Samsung Note,Sony,Sony Xperia Z and many other brands. | Easily photograph through any instrument: For eyepieces of 28-47mm diameter - infinitely adjustable for almost every 1.25"" eyepiece. | Main part made of zinc alloy(Sturdy Durable and Lightweight),the phone clamp made of high strength PA Plastic and features adjustable locking mechanism with a steel bolt not a spring. Locking knob and soft EVA - keeping your smartphone safe so it cannot fall out. Keep devices from scratching and damaging. " | Photography does not have to be difficult, take pictures of your favourite subjects even faster, and they succeed almost without trying.

Bahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task.The best focus for your telescope quickly and easily. | Suitable for use on all types of telescope - reflectors, rafractors, Dobsonians, Mak-Cas and SCTs. They are made from precision laser cut enforced plexiglass, which is stiff and long lasting. They will never be brittle in the cold, unlike some other masks which are made from normal plastics. | The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect you valued telescope surface. This prevents slippage, whilst allowing the mask to remaining perfectly central. Because of this 3-post mounting, the mask remains centered, whilst fitting a wider range of telescopes. | They are made from 2mm thick laser cut plexiglass and the securing screws are capped with soft plastic so that they do not damage your telescope.These high quality Bahtinov masks are adjustable to fit a wide range of optical tubes, unlike masks which are only able to fit one telescope. They have adjustment latitude of about 290-340mm, depending on model, in aperture making them very versatile. | Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length. All you need to do is to measure your telescope tube size and choose the right size of the mask (contact us if you are not sure where to measure).

Bahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task.The best focus for your telescope quickly and easily. | Suitable for use on all types of telescope - reflectors, rafractors, Dobsonians, Mak-Cas and SCTs. They are made from precision laser cut enforced plexiglass, which is stiff and long lasting. They will never be brittle in the cold, unlike some other masks which are made from normal plastics. | The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect you valued telescope surface. This prevents slippage, whilst allowing the mask to remaining perfectly central. Because of this 3-post mounting, the mask remains centered, whilst fitting a wider range of telescopes. | They are made from 2mm thick laser cut plexiglass and the securing screws are capped with soft plastic so that they do not damage your telescope.These high quality Bahtinov masks are adjustable to fit a wide range of optical tubes, unlike masks which are only able to fit one telescope. They have adjustment latitude of about 290-340mm, depending on model, in aperture making them very versatile. | Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length. All you need to do is to measure your telescope tube size and choose the right size of the mask (contact us if you are not sure where to measure).