LUNT Blue-Glass 20mm for B400 to B1800 blocking-filters

Spare part for Pressure-Tuner of MT and THa series H-alpha solar telescopes from LUNT SOLAR SYSTEMSTwo rubber O-rings are installed into the Pressure-Tuner of Lunt Solar Systems solar telescopes to seal the air-pressure tuning system. Over time, the rubber of this O-rings can age and become porous, whereby the air-pressure can then no longer be maintained. When this happens, a old O-ring can be replaced by this spare part. The replacement is simple and can be done by the user. Installation instructions can be found here under the tab "Manuals" as a PDF file for download.Please be sure to note:Depending on the production series, the diameters of the Pressure-Tuner pistons can vary slightly. There are pistons for O-rings with 32mm inner diameter and 40mm outer diameter, and pistons for O-rings with 34mm inner diameter and 42mm outer diameter. Please check the diameter of your old O-rings, this spare part is an O-ring with 34mm inner diameter and 42mm outer diameter.If you need the smaller O-ring with 32mm inner diameter and 40mm outer diameter, this is the spare part with item number 0558330.The LS50THa telescopes have Pressure-Tuners with smaller diameters, for these you will need replacement O-rings with item number 0558320.After replacing a O-ring, the piston and cylinder of the Pressure-Tuner can be re-greased with grease available under item number 0558350.FEATURESInner diameter: 34mmOuter diameter: 42mmCannot be used separately, only as a replacement part on the Pressure-Tuner of MT and THa telescopes from Lunt Solar Systems.It does not matter what blocking-filter is at the MT or THa telescope.SCOPE OF DELIVERYSpare part one O-ring with 34mm inner diameter and 42mm outer diameter for Pressure-Tuner of MT and THa H-alpha solar telescopes from Lunt Solar Systems

​Spare part for Pressure-Tuner of LS50THa H-alpha solar telescopes from LUNT SOLAR SYSTEMSA rubber O-ring is installed into the Pressure-Tuner of Lunt Solar Systems LS50THa solar telescopes to seal the air-pressure tuning system. Over time, the rubber of this O-ring can age and become porous, whereby the air-pressure can then no longer be maintained. When this happens, the old O-ring can be replaced by this spare part. The replacement is simple and can be done by the user. Installation instructions can be found here under the tab "Manuals" as a PDF for download.After replacing the O-ring, the piston and cylinder of the Pressure-Tuner can be re-greased with grease available under part number 0558350.Please note that this spare part can only be used on the Lunt Solar Systems LS50THa H-alpha solar telescopes. If the problem occurs on the larger THa or MT series telescopes, the larger O-rings with part numbers 0558330 or 0558340 must be used there.FEATURESInner-diameter: 31mmOuter-diameter: 39mmCannot be used separately, only as a replacement part on the Pressure-Tuner of the LS50THa telescopes from Lunt Solar Systems.It does not matter what blocking filter is at the LS50THaSCOPE OF DELIVERYSpare part one O-ring for pressure tuner of LS50THa

Spare part for Pressure-Tuner of MT and THa series H-alpha solar telescopes from LUNT SOLAR SYSTEMSFor example, if the O-rings have been changed on a Pressure-Tuner of a Lunt Solar Systems H-alpha solar telescope, the Pressure-Tuner can be re-greased with this grease. The grease can be applied to the piston with the O-rings and to the threads of the brass cylinder on the Pressure-Tuner. It keeps the Pressure-Tuner running smoothly and seals it.Please note:Do not use too much grease inside the brass cylinder. The grease must not get into the air passage at the bottom of the brass cylinder, otherwise the Etalon could be damaged in the worst case.FEATURESLithium grease with Teflon contentVery good sealing propertiesHigh adhesion and good corrosion protectionTemperature stable from -20 to +120° CelsiusConstant viscosity during temperature fluctuationsSCOPE OF DELIVERYSpare part: Grease for Pressure-Tuner of MT and THa H-alpha solar telescopes from Lunt Solar Systems

Observe solar eclipses, sunspots, and airplane flybys in front of the sun safely with these glasses designed for direct solar observation.Manufactured to the same standards of safety typical to the entire family of Lunt Solar Systems products - the premium manufacturer of Solar telescopes and filters.FEATURESproduces a very natural light-yellow sun imageideal for safe visual observation of the sunvery resistant to damage100% safeSCOPE OF DELIVERYSolar eclipse glasses (5 pieces)

Spare part for Pressure-Tuner of MT and THa series H-alpha solar telescopes from LUNT SOLAR SYSTEMSTwo rubber O-rings are installed into the Pressure-Tuner of Lunt Solar Systems solar telescopes to seal the air-pressure tuning system. Over time, the rubber of this O-rings can age and become porous, whereby the air-pressure can then no longer be maintained. When this happens, a old O-ring can be replaced by this spare part. The replacement is simple and can be done by the user. Installation instructions can be found here under the tab "Manuals" as a PDF file for download.Please be sure to note:Depending on the production series, the diameters of the Pressure-Tuner pistons can vary slightly. There are pistons for O-rings with 32mm inner diameter and 40mm outer diameter, and pistons for O-rings with 34mm inner diameter and 42mm outer diameter. Please check the diameter of your old O-rings, this spare part is an O-ring with 32mm inner diameter and 40mm outer diameter.If you need the larger O-ring with 34mm inner diameter and 42mm outer diameter, this is the spare part with item number 0558340.The LS50THa telescopes have Pressure-Tuners with smaller diameters, for these you will need replacement O-rings with item number 0558320.After replacing a O-ring, the piston and cylinder of the Pressure-Tuner can be re-greased with grease available under item number 0558350.FEATURESInner diameter: 32mmOuter diameter: 40mmCannot be used separately, only as a replacement part on the Pressure-Tuner of MT and THa telescopes from Lunt Solar Systems.It does not matter what blocking-filter is at the MT or THa telescope.SCOPE OF DELIVERYSpare part one O-ring with 32mm inner diameter and 40mm outer diameter for Pressure-Tuner of MT and THa H-alpha solar telescopes from Lunt Solar Systems

A digital microscope easily brings the microcosmos up on the screen. For a long time, these instruments were common only in the beginner's range. Now, the successful and proven Researcher series makes the step into the digital microscopy world and offers new options for microscopy in schools, for hobby or work. The optics and mechanics is the same as already well estabished in the Researcher Bino and Researcher Trino microscopes. Incuding 4 DIN objectives, Abbe condenser, coaxial fine focus and crosstable, the Researcher LCD is suitable for use in the microscopy hobby as well as in teaching or other work related applications. The highest magnification when using the 60x objective (compares to 600x on non digital microscopes) is high enough to view small microorganisms as microalgae, flagellates and bacteria. Other magnifications (20x, 100x oil) can be added later. The Researcher LCD is also compatible with our plan-achromatic objectives designed for 160mm optical tube length.The integrated, modern Sony camerasensor IMX206 with 16MP gives a brilliant image with good contrast on the monitor. The user can change settings and capture images and video conveniently with the touch screen. Images with 16MP and Full HD video can be stored directly on SD card (SD card not supplied). The microscope also has a HDMI connection, so the image is easily shown on a big monitor, TV, beamer or smartboard. The results can be shared with a bigger audience in lectures or teaching. FEATURESDigital microscope with integrated touchscreen 4 achromatic DIN objectives (RMS thread connection), parfocal length 45mm Objective magnifications of 4x, 10x, 40x, 60x (40x and 60x with specimen protection) Abbe condenser with iris diaphragm, fully adjustable and height adjustable High-contrast screen with natural colours, 1024x600px resolution Integrated Sony IMX206 camera sensor with 16MP HDMI port for connection to an external monitor SD card slot (supports up to 32GB, not included) USB port (for data transfer to SD card) SCOPE OF DELIVERYResearcher LCD Digital Microscope Set of 5 prepared slides and 5 blank slides Power adapter (EU) 5V 2A HDMI cable USB cable for transferring stored data to a PC Dust cover

Double-stack filter for LS50THa telescopes.The bandwidth of H-alpha systems can be reduced by so-called "double-stacking". A smaller bandwidth provides much more contrast at the solar surface, thereby many more details will become visible.Double-stacking with a bandwidth of only <0.55 Angstrom is also possible at the LS50THa telescopes. Therefore Lunt Solar Systems has especially designed this LS50C double-stack filter in compact housing. The filter threads directly onto the LS50THa telescopes.FEATURESAperture: 50  mmBandwidth: <0.55 AngstromTuning: mechanical tilt-tuningHousing diameter: 85 mmLength: 70 mmWeight: 0.7 kgFront thread: M80x1 female threadRear thread: M80x1 male threadonly usable together with a LS50THa telescope!SCOPE OF DELIVERYLS50C H-alpha double-stack filterInstruction manual