EXPLORE SCIENTIFIC 1.25" UHC Nebula Filter (Refurbished)

One of the most important obstacles for the exploration of the night sky is the brightening of the night sky by artificial lights, such as streetlights. The night sky is not really dark in the vicinity of towns or cities, which reduces the visibility of objects beyond the solar systems enormously. Depending on the type of the celestial object it is possible to increase the contrast dramatically by blocking the annoying artificial light. The EXPLORE SCIENTIFIC UHC filter uses a characteristic property of the so called emission nebulae. Those objects glow in special colours, their emission lines. Those emission lines are linked to chemical elements - in this case hydrogen at 486nm and 656nm, plus oxygen at 496nm and 501nm. The Explore Scientific UHC nebula filter blocks all other colours (and thereby nearly all of the artificial light) and only the emission line of the hydrogen and oxygen can pass the filter. The result is astonishing: suddenly nebulae are visible at locations that were completely empty without filters. In suburban skies for example the Owl-nebula M97, the Veil-nebula NGC6992 or even the bright Dumbell-nebula M27 are not clearly visible. By using this filter you can see the nebulae and their structures without problems. A must for every visual observer. The EXPLORE SCIENTIFIC nebula filters come with a individual test certificate - your guarantee to receive a premium filter.FEATURESenables the observation of emission nebulaeblocks almost the entire artificial lightonly the two emission lines of hydrogen and oxygen passes the filterWHAT'S INCLUDED1x 1.25" UHC nebula filter

The BRESSER Corvette models impress with their outstanding and razor-sharp image reproduction due to their sophisticated optics and precise engineering. This series is made with high quality BaK-4 glass material, which is coated with a contrast and brightness-enhancing full multi-layer coating. They have a dioptre adjustment and a tripod connection thread as standard. The large LE (Long Eye) eyepieces and the TwistUp eyecups offer optimal setting points for observations for a wide variety of users - even those who have to wear glasses to use binoculars . Thanks to the waterproof housing these binoculars can be used even a heavy rain shower. The 10x50's Porro prism optical arrangement gives the user bright and clear images and is therefore not only suitable for nature and bird watching but is also for observations at dusk, or for astronomy.  10x magnification provided by these binoculars is idea for a wide range of uses and as such, is not difficult to hand hold, as higher magnification binoculars would be.Read Steve Tonkin's excellent BBC Sky At Night Magazine review here: https://www.skyatnightmagazine.com/reviews/binoculars/bresser-10x50-corvette-binoculars/FEATURES Particularly strong Porro binoculars with wide field of vision High-contrast and bright pictures SCOPE OF DELIVERY Binoculars Nylon bag Shoulder strap Protective caps for the lenses Cleaning cloth Operation manual

If a observing session is a relaxing and joyful experience is heavily dependend on the choice of eyepieces. People wearing glasses very often have the problem to see the entire field of view when they are using eyepieces with large apparent fields. This problem is now history. The new 62°- LER eyepieces by Explore Scientific do not only offer excellent image sharpness and high resolution and contrast over the full field of view - you can see that full field without problems even with glasses on. Fatigue due to tense head positioning and strained viewing simply does not happen because of the excellent viewing comfort these eyepieces provide even to observers wearing glasses. Enjoy the unique combination of excellent image sharpness out to the edge of the field even for fast optics, superior contrast and unmatched viewing comfort. Eyepieces with perfect combinations of various modern glass substrates and highest standards in manufacturing, quality control and service are a tradition at Explore Scientific - the outstanding resolution and sharpness to the very edge.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 patentet 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.Eye relief: 12mm

The compact and handy body enable the BRESSER Hunter 10x50 Binoculars to be the perfect companion for just about every outdoor activity. The fully coated optics and its solid mechanics enable a true colour picture replication.The advantageous relation of lens diameter and magnification enable observations at dawn. All models comprise not only a dioptre adjustment but also collapsible rubber eyecups for spectacle wearers. The handy rubber armoured body of the BRESSER Hunter 10x50 binoculars allow a firm grip. A tripod thread is standard for all Hunter binoculars.FEATURESType: Standard binocularsApplication range: Sports, Nature, HikingPrism glass: BK-7Focus type: CenterExtras: Tripod adapter thread, Rubber armouringColour: blackPrism and lens materials made of BaK-7 glass materialOptical surfaces are blue fully coated Centre-wheel focusingIndividual eyepiece dioptre adjustmentTripod adapter threadRobust, rubber armoured binocular bodySCOPE OF DELIVERYBinocularsNylon bagCarrying strapProtective lens capsProtective eyepiece caps

NOTE: This item is a used or returned product. This means: The item may show slight signs of use; some accessories may be missing; the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.