EXPLORE SCIENTIFIC 52° LER Eyepiece 20mm Ar

High power eyepieces (e.g. 3mm to 10mm) are used not only for obvious observations of planets and double stars, but can be employed for bright, compact deep sky objects. Not only will the scale of an object like a planetary nebula or globular cluster be impressive as it fills the eyepiece FOV, but the background sky will be very dark as the contrast effect increases with added magnification, provided that the atmospheric seeing conditions are favorable enough to reveal a sharp image. The 4.5mm is a popular choice for a wide variety of telescopes, producing some of the highest magnification views that most astronomers will observe at.Comfort, Quality, Value. The Explore Scientific 52° LER Series Most short focal length eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. Expect exceptional quality and value versus a comparably priced Plossl.  These eyepieces are the choice for observers wearing glasses - with excellent performance and durability. The rubber inlet and the foldable eyecups make handling and using in the field easy. The patented EMD"-coating produces high contrast images and prevents reflexes and ghosting. The argon purging effectively prevents internal fogging, and you don´t have to deal with dirt, fungus or cleansing fluids getting between the lenses. The eyepieces are sealed - this makes sure you will be able to enjoy these eyepieces for many years to come.SPECIFICATIONSLarge eye distance, large field and great image sharpnessExcellent viewing position for people with glassesExcellent field sharpness even with fast optics52° apparent field of viewArgon-purging prevents internal fogging, the sealing facilitates cleaningPatented EMD"-coating to maximize contrastBlackened lens edges to avoid reflexesAll eyepieces of this series are parfocalStainless steel barrel with conical security cutoffDust covers and protective bag includedSCOPE OF DELIVERY52° EyepieceDust coversProtective bag

Mid-range high power eyepieces like the 10 mm are instrumental when transitioning through magnifications to observe an object until it is best seen. There are several aspects that have to come together when observing at high powers: good-to-perfect atmospheric seeing conditions; telescope optics that are collimated; a telescope that is acclimated to the ambient temperature; brightness and size of the object being observed are just a few aspects to consider. The observing challenges are high, but the rewards of observing at high power with razor sharp views are unforgettable. Comfort, Quality, Value. The Explore Scientific 52° LER Series Most short focal length eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. Expect exceptional quality and value versus a comparably priced Plössl. These eyepieces are the choice for observers wearing glasses - with excellent performance and durability. The rubber inlet and the foldable eyecups make handling and using in the field easy. The patented EMD-coating produces high contrast images and prevents reflexes and ghosting. The argon purging effectively prevents internal fogging, and you don't have to deal with dirt, fungus or cleansing fluids getting between the lenses. The eyepieces are sealed - this makes sure you will be able to enjoy these eyepieces for many years to come.SPECIFICATIONSLarge eye distance, large field and great image sharpness Excellent viewing position for people with glassesExcellent field sharpness even with fast optics52° apparent field of viewArgon-purging prevents internal fogging, the sealing facilitates cleaningPatented EMD-coating to maximize contrastBlackened lens edges to avoid reflexesAll eyepieces of this series are parfocalStainless steel barrel with conical security cutoffDust covers and protective bag includedSCOPE OF DELIVERY52° EyepieceDust coversProtective bag

With teleextenders it is possible to extend the effective focal length of a telescope system, resulting in higher magnification for the observation of the moon, the planets or small Deep-Sky objects with the same eyepieces. So you can use the advantages of eyepieces with longer focal length - such as the bigger eye distance and the more relaxed observing comfort - at high magnifications also.These teleextenders incorporate a telecentric optical design that deliveres a excellent image sharpness over the whole field of view and are premium choices for visual observations and astrophotography. The combination of excellent fully multicoating with superior optical design makes the Focal Extenders superior to classic Barlow lenses.Features: Suitable for visual observations and astrophotographytripling the effective total focal length of the telescopeFour lens telecentric design Fully multicoatedFilter thread for color or nebula filters

Whether you want to explore the night sky or make terrestrial observations during the day, the BRESSER NightExplorer 15x70 astronomy binoculars will ensure that you are perfectly equipped for all your outdoor adventures. The extra large lens diameter of 70 mm lets a large amount of light into the binoculars, while the 15x magnification ensures that you obtain highly detailed images of your observed targets. Fully multicoated optics ensure scattered light is kept to a minimum, so that you can enjoy a perfect view with the best possible optical performance. At a distance of 1000 metres, the field of view is 77 metres wide. The highly corrected eyepieces with 5 lenses in 3 groups produce vivid images with sharp edges. Coating The premium BaK-4 optics (barium crown glass) features a full multi-coating to increase light transmission and reduce reflections. Focusing Thanks to the individual eyepiece adjustment, you only need to focus the binoculars once. You can then enjoy a sharp image at infinity for the night sky. The binoculars also have a close focus, which you can set from a distance of 10 metres or more for close-up observations of your immediate surroundings. Also suitable for glasses wearers Thanks to the foldable eyecups, you can set the optimal distance between your eyes and the ocular lenses. If you wear glasses, this allows you to see the entire field of view of the Porro-prism binoculars. There is also a dioptre compensation of +/-8, which you can use to compensate for small differences in vision between your eyes. Weatherproof and robust Thanks to their waterproof design, the binoculars can be used in wet or foggy weather conditions, as water and moisture cannot enter the housing. The binoculars are filled with argon to stop the optics from fogging up. In addition, the ergonomic armouring provides a secure grip and protects the binoculars against impacts and knocks, making them ideal to travel with. Portable design The 15x70 Porro-prism binoculars come with an excellent lightweight aluminium tripod, with study ballhead mounting, to ensure wobble-free astronomical or terrestrial observations. Both the binoculars and the tripod can be stored in the sturdy padded backpack, which is also included in the set. This ensures that you can easily transport your gear to your desired vantage point, even if you have to go a long way to get there. Discover the night sky and the wonders of nature with the powerful BRESSER NightExplorer 15x70 astronomy binoculars! FEATURES Astronomy binoculars for astronomical and terrestrial observations High magnification and light-gathering power Magnification: 15x Lens diameter: 70 mm Optical design: Porro Full multi-layer coating BaK-4 glass material Rubber eyecups for spectacle wearers Individual eyepiece adjustment Highly corrected eyepieces for sharp-edged images Field of view: 77 m (at a distance of 1000 m) Close focus: from 10 m Dioptre adjustment: +/- 8 Tripod connection thread Includes Aluminium tripod Includes Backpack WHAT'S INCLUDED Astronomy binoculars Tripod Backpack Instructions with warranty information

This adapter replaces the M42x0.75 Adapter for CCD Camera that comes standard with the EXPLORE SCIENTIFIC 3-inch Field Flattener/0.7x Focal Reducer. Allows the connection of a camera via M48x0.75 thread. The larger free inner diameter than T2/M42 effectively prevents vignetting when using a full format camera. The illumination of the camera sensor is therefore optimised.FEATURESAllows the connection of a camera via M48x0.75 threadLarger free inner diameter than T2/M42No vignetting by using cameras with full frame sensor Fits to EXPLORE SCIENTIFIC 3" Flattener 0.7 x ReducerMade of black anodized aluminumSCOPE OF DELIVERYAdapter with M48x0,75 thread