LUNT LS50FHa/B600d1 H-alpha solar filter

A very compact, complete telescope for observing the sun in H-alpha light.The LS50THa solar telescope offers 50 mm free aperture, 350 mm focal length, and provides a bandwidth of <0.75 Angstrom. The telescope is fitted as standard with the air-pressure tuning system "Pressure-Tuner", the Etalon is safely installed inside the telescope. Prominences and surface detail can quickly be viewed spontaneously. This very portable system is an ideal travel companion for wherever you go.A B400 blocking filter is installed inside the star diagonal. The B400 is good for visual observing. Focusing is achieved by a non-roting Helical focuser.Please note that there is only a small back-focus at this telescope, therefore solar-imaging is very difficult. The LS50THa is designed for visual solar observing. We recommend for imaging the 60mm telescopes of the LS60MT series.Also double-stacking with a bandwidth of only <0.5 Angstrom is possible by using the additional available LS50C filter (0550210). This filter threads directly onto the LS50THa telescope. Double-stacking will provide much more contrast, and more details on the sun will become visible.FEATURESAperture: 50  mmFocal Length: 350 mmBandwidth: <0.75 AngstromTuning: air-pressure tuning system "Pressure-Tuner"Blocking Filter: B400non-rotating Helical focuserTube-ring with 1/4-20 tapped base (standard thread for photo-tripods)Length: 37cmWeight: 2.1kgSCOPE OF DELIVERYLS50THa H-alpha Solar TelescopeB400 Blocking Filter in star-diagonalPressure-TunerTube ring with 1/4-20 connection for mounting on photo-tripodsnon-rotating Helical focuserInstruction manual

The ASTRO & MARINE binoculars from BRESSER are ideal for astronomy and maritime use, e.g. sailing and water sports enthusiasts. Robust and weatherproof per IPX6 levelThanks to their ergonomic rubber armouring, these binoculars fit securely in the hand and are also well protected against shocks and bumps. The binoculars are waterproof and filled with nitrogen. This effectively prevents fogging of the lenses, even in unfavourable weather conditions. Lightweight with tripod connection threadThe robust, yet very light construction is made possible by the most modern magnesium housing construction. Magnesium is around 35% lighter than aluminium. Due to the moderate 7x magnification and the low weight, these 7x50s are also very well suited for hands-free use. Nevertheless, there is a tripod connection thread on the centre axis. This means that the ASTRO & MARINE model can also be mounted securely on a photo tripod using the tripod adapter (Art.4914925) which is included as part of the package. Although this is not absolutely necessary with a magnification of 7x, it is highly recommended, especially for long-time astronomical observations, in order to obtain an absolutely steady image. Eyepieces for comfortable viewingThe precise single eyepiece focusing (SF) makes it possible to focus the binoculars once and then clearly observe all resolvable objects in the night sky, or on the horizon. In addition, this design prevents accidental change of focus. Foldable rubber eyecups and eyepieces with a comfortable eye relief distance (WP) of 20mm also allow those who have to wear glasses to observe, to use the entire field of view. High quality opticsThanks to fully multi-coated Bak4 optics, large 50mm objective lens diameter and the well-corrected eyepieces with 3 lenses in 2 groups, these excellent binoculars produce sharp and brilliant images. The maximum reduction of stray light achieved by internal baffles and housing/edge blackening, results in the best possible optical image and perfect contrast, even in difficult light conditions and especially at night.FEATURESBinoculars for astronomy, landscape observation and water sportsWaterproof per IPX6 level and filled with nitrogen to prevent lens foggingAlso for use in unfavourable weather conditionsExtremely high light gathering optics, making them ideal for night-time observationModerate magnification for a steady image, even when hand-holdingMagnification: 7x / Lens diameter: 50mmSingle eyepiece focus (SF) and foldable rubber eyecups, also suitable for spectacle-wearersWide pupil distance (WP) of 20mm for comfortable viewingWell corrected eyepieces for ultimate image sharpness and pinpoint star imagesModern multi-layer coatings on all lens surfaces for high light transmissionErgonomic rubber armouring - very good grip and protects against shocks and bumpsRobust construction, yet still lightweight due to magnesium housingDimensions: 198 x 202 x 66 mm / Weight: 1130 grams / Colour: blackTripod connection thread 1/4 inch available on the binocular bridgeMetal photo tripod adapter already included in deliveryWHAT'S INCLUDED Binoculars Carrying strap Dust caps Nylon travel bag Photo tripod adapter (Art. 4914925) Instruction manual

Blocking-filter in 90° zenith mirror diagonal, for telescopes up to 540mm focal length, and with 1.25 inch (31.7mm) focuser. Can only be used together with a LUNT H-alpha filter, or with a LUNT H-alpha telescope!Lunt Solar Systems offers blocking-filters in different sizes, and alternatively in 90° star-diagonal housings or straight extension tubes. You can choose what blocking-filter you will use at your LUNT H-alpha Etalon system.The B600d1 is installed in a 90° star-diagonal housing, for 1.25 inch (31.7mm) focuser on the telescope side, and with T2 thread and 1.25 inch eyepiece connection on the eyepiece side. The B600d1 can be used at LUNT H-alpha systems, if the used telescope has a 1.25 inch focuser and up to 540mm focal length.The blocking-filter can not be used without additional H-alpha filter system from Lunt Solar Systems! Blocking-filters are absolutely required for the safety and performance of H-alpha telescopes for solar observing. Lunt Solar Systems blocking-filters contain a unique filter system. We can only warranty safety or performance, if blocking-filter is paired with a H-alpha filter or H-alpha telescope of Lunt Solar Systems.At the tab "Accessories" you will find H-Alpha telescopes and filters with which this blocking filter can be combined.FEATURESBlocking-filter only usable at additional H-alpha filter systemFilter diameter: 6mmUsable at telescopes up to 540mm focal90° star-diagonal housing1.25 inch slide tube for 1.25 inch focuserConnection for 1.25 inch eyepiecesT2 thread for camera connectionSCOPE OF DELIVERYBlocking-filter B600d1 in 90° star-diagonal for 1.25 inch focuser

50mm H-alpha solar filter system with B1200 blocking filter, for front mounting at telescopes with 2" focuser, and up to 1080mm focal length.The LS50FHa H-alpha Etalon filter system with 50mm aperture (no central obstruction) for use on any refractor and many other telescopes. Because the LS50FHa has an estimated bandwidth of <0.75 Angstrom it is capable to providing high contrast views of both solar surface and edge detail (prominences).The system includes the B1200 blocking filter, which is usable for telescopes up to 1080mm focal length. Larger blocking filters suitable for longer focal length are also optional available. The blocking filter is installed in a 90° star diagonal for 2" focuser. This diagonal is equipped with a reception for 1.25" eyepieces and a T2 camera connection.Adding an additional available double-stack Etalon system will reduce the bandwidth to ~<0.55 Angstrom.FEATURESAperture: 50 mmNo central obstructionBandwidth: <0.75 AngstromTuning: tiltable EtalonHousing diameter: 95 mmLength: 73 mmWeight: 0.7 kgFront thread: M90x1 female threadRear thread: M90x1 male threadBlocking filter: B1200 in diagonal for 2" focuserMaximum focal length of telescope: 1080 mmSCOPE OF DELIVERYLS50FHa solar filterB1200 Blocking Filter (for 2" focuser) in star-diagonalTransport caseInstruction manual

​Explore Scientific Solarix Solar Filter Film.Watch Solar Eclipses, Sun Spots, Planet Transits, crossing aircrafts and satellites.Suitable for making your individual solar filter for telescopes, binoculars, photo- and video cameras.New developed solar filter film that has the optical quality of the glass with the advantages of impregnated polymer.Collateral protection by using impregnated polymer and additional filter coated surface.Creates a very natural and yellow solar image.Also qualified for high magnifications.Consistent brightness and even density with any aperture.Ideal for visual observing and photographic use.Light weight and does not require re-balancing tube assembly.Flat surface compared to other thin film filters that have wrinkles and creases.Resistant against any damage.Construction manual included for making your individual solar filter and eclipse glasses.100% safeSpecifications:Material thickness: 0.05mm Optical density:  5Optical transmission: 1/1000 of 1%  (99.999% incoming light blocked)Dimension: A4 - 210 x 297mmSCOPE OF DELIVERYSolar Filter Film, A4 sizeHard carton stencil for cutting out a telescope filter holder and eclipse glassesContruction- and Instruction manual Additional materials which need to be purchased separately:Double sided gluing tape.Universal adhessive glue.Paper scissor.