BRESSER Extension Tube 37.5 mm for 2.0" R&P Focuser (Refurbished)

NOTE: This item is a used or returned product. This means: The item may show slight signs of use and the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.Set of 5 extension tubes with T2 thread on both sides for exact distances and secure hold of cameras for astrophotography. Also comes with SC to T2 thread adapter.In astrophotography, most cameras are connected to a telescope via a T2 thread (M42x0.75), the most popular international standard. However, in many cases, T2 and T2-ring adapters for connecting telescope focusers to a camera are not sufficient, as specific distances must also be observed. This is especially important when using correctors, reducers or flatteners. This extension tube set, which consists of 5 mm, 7.5 mm, 10 mm, 15 mm and 30 mm tubes, will allow you to obtain almost any distance using the corresponding combination. Each tube has a T2 interior thread on one side and a T2 exterior thread on the other side.Most telescopes either include a T2 thread adapter, or the eyepiece can be used with a simple T2 thread adapter with a 2 plug-in diameter (item no. 0510365).However, Maksutov-Cassegrain, Schmidt-Cassegrain, ACF or RitcheyChrétien telescopes may use a so-called SC thread. To allow you to use this extension tube set with these telescopes, the set also includes an SD to T2 thread adapter.FEATURES5 T2 tubes with lengths from 5 mm to 30 mmCombination of tubes allows you to obtain distances of 5 mm to 67.5 mmFor exact camera distances in astrophotographyDELIVERY CONTENT5x T2 extension tubes (5/7.5/10/15/30 mm)1x SC to T2 thread adapter

NOTE: This item is a used or returned product. This means: The item may show slight signs of use and the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.Red polar viewfinder illumination unit for BRESSER EXOS-2 mounts with fixing thread M8x0.75mm. An adjustable illumination makes it easier to find the marked sky objects on the polar viewfinder.IMPORTANT NOTEPlease verify the type of fixing thread prior to your purchase. We offer two different sizes: 12mm (part No. 4964211 for older EXOS-2 mounts) and 8mm (part No. 4964212 for newer EXOS-2 mounts)FEARTURESRetrofittable red pole finder illumination for BRESSER EXOS-2Illuminates the graticule in the viewfinderMakes it easier to find the celestial objectsAlso for 4900850 BRESSER 8x50 viewfinder as spare partAlso for Explore Scientific 8x50 viewfinders as spare partSCOPE OF DELIVERYPolar Viewfinder Illumination unit for EXOS-2Fixing thread M8x0.75mm

NOTE: This item is a used or returned product. This means: The item may show slight signs of use and the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.An amici prism allows for a comfortable 45° viewing position and creates an erect image without left-right reversal. This makes it especially suitable for nature observations but it can also be very helpful with astronomical observations. Particularly beginners may find it easier to orientate in the sky when they compare the view through the telescope with what they can see with their naked eyes.With this  amici prism an astronomical telescope can be used as a powerful spotting scope.Suitable for Maksutov-Cassegrain style telescopes with threaded M35x1mm visual back adapter:item no.: 4701102 BRESSER MESSIER MCX-102 GoTo Telescope AZ/EQitem no.: 4701127 BRESSER MESSIER MCX-127 GoTo Telescope AZ/EQitem no.: 4890125 BRESSER MESSIER MC-90/1250 optical tubeitem no.: 4810140 BRESSER MESSIER MC-100/1400 optical tubeitem no.: 4827190 BRESSER MESSIER MC-127/1900 optical tubeFEATURESfits to BRESSER MESSIER MCX/MC telescopescomfortable eye relief for refractor telescopes45°- viewing position and image without left-right reversalastronomical telescope turns to a powerful spotting scopefor use with 1.25'' (31:7mm) eyepiecesSCOPE OF DELIVERY45° Amici Prism M35x1mm to 1.25''/31.7mm

NOTE: This item is a used or returned product. This means: The item may show slight signs of use and the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.One eyepiece for every occasion, with very good field correction and large field of view.The BRESSER Zoom Eyepiece Deluxe covers the large focal length range from 8 to 24 mm. These are also the focal lengths most frequently used with most telescopes. Especially for instant observations, where you don't want to pack a whole suitcase full of eyepieces, the zoom eyepiece is a good choice. The Deluxe version offers with its particularly advanced optical design with 9 elements in 6 groups an even better field correction and sharpness, combined with a large apparent field of view of 40 up to 62 degrees.Always the ideal magnification on handA quick turn and the ideal magnification for you is set. The adjustment is stepless from 8 to 24 mm focal length. This eliminates the need to always change eyepieces.Comfortable viewingThe BRESSER Zoom Eyepiece Deluxe offers a large comfortable eye relief (LER) of 20 mm to the eyepiece lens. This means a comfortable view even during longer observation, an important criterion especially for people wearing glasses. The rubber eyecup can also be individually adjusted by a twisting movement.Advanced optical designTo achieve the best possible image over the entire focal length range, a particularly advanced optical design with 9 lenses in 6 groups is used. The full multi-coating on all lens surfaces also guarantees maximum light transmission. To effectively suppress unwanted reflections, all lenses are carefully blackened at the edges. Thus, the image produced offers the maximum possible contrast and image brightness.Compact and solid designThe BRESSER Zoom Eyepiece Deluxe is made entirely of black anodised aluminium. It has an extremely solid and high-quality material appearance and is long-lived, even with extensive use. The precise zoom mechanism can be adjusted safely through the rubberised adjustment ring. A white laser engraving with focal length and pointer arrow shows the current focal length setting even in low light.Achievable magnifications with common telescope focal lengths350mm: 44 - 15x400mm: 50 - 17x500mm: 63 - 21x650mm: 81 - 27x750mm: 94 - 31x900mm: 113 - 38x1000mm: 125 - 42xFEATURESDeluxe version with even better field correction and sharpnessLarge apparent field of view 40 up to 62 degreesZoom eyepiece with stepless focal length adjustment from 8-24 mmOne eyepiece covers a wide focal length rangeStepless adjustment to ideal magnificationQuick adjustment of magnification without changing eyepiecesComfortable eye relief of 20 mm (LER = long eye relief)Adjustable rubber eyecup to adjust to ideal interpupillary distanceAlso very suitable for eyeglass wearersCompact and solid designMade entirely of black anodised aluminiumAluminium dust cap with threadVery high-quality material appearancePrecise and robust zoom adjustment mechanismRubberised grip surface for zoom adjustmentWhite laser engraving with focal length and pointer arrowFocal length range 8-24 mm freely adjustableOptical design: 9 lenses in 6 groupsAll lens surfaces have full multi-coatingEyepiece sleeve diameter: 1.25 inches / 31.7mmFilter thread in sleeve: M28 x 0.6 mm (standard 1.25'' filter thread)Eyepiece weight: 315 gLength of eyepiece: 102 mmDiameter: 52 mmColour: blackSCOPE OF DELIVERYDeluxe zoom eyepieceMetal dust cap for eyepiece lensPlastic dust cap for eyepiece sleeve