Vaonis - Solar Filter for Vespera Telescope, Bundle with Dual Band Filter, Light Pollution Filter

Where precision and safety in solar observation are paramount, the Baader 160mm AstroSolar BDSF 3.8 White-Light Digital Solar Filter emerges as a superior choice for astronomers and astrophotographers alike. This high-quality filter is a product of the renowned Baader Planetarium, a leader in the production of astronomical equipment, ensuring that users receive a product that is both innovative and reliable.Crafted with meticulous attention to detail, the Baader Digital Solar Filter is equipped with the AstroSolar PHOTO Film OD 3.8, a film that has stood the test of time and has been specifically designed for digital videography and the lucky imaging technique. This innovative film allows for the shortest exposure times, effectively "freezing" atmospheric turbulences and providing crystal-clear images of solar phenomena.Unlike many ready-made filters that compromise image quality by stretching the filter material taut, the Baader AstroSolar filter is engineered to maintain the film's integrity. The filter must be mounted stress-free to function as a high precision plane optical window, which is why it may exhibit slight ripples - a hallmark of its exceptional design that ensures optimal performance without the distortion found in lesser quality filters.The Baader Digital Solar Filter boasts a durable, temperature-compensated cell that prevents stress on the AstroSolar film during temperature fluctuations. This ensures that the filter maintains its superior optical quality in a wide range of temperatures, from -30°C to +50°C. The film is carefully cemented onto an injection-molded ring that matches the thermal expansion of the AstroSolar material, creating a free-floating film-carrier ring. This ring is then securely held within an aluminum frame by a fiber-reinforced plastic holding ring, providing maximum security and preventing any potential damage to the cell.The Baader 160mm AstroSolar BDSF 3.8 White-Light Digital Solar Filter is an efficient and user-friendly solution for those seeking to capture the sun's splendor without compromising their equipment or vision. Its large 160mm filter size allows for an ample amount of light to pass through, resulting in clearer and more detailed images. Whether for professional or amateur use, this solar filter stands out as a top-tier accessory for any high-end telescope, offering both safety and unparalleled optical performance for solar digital imaging.

Take your solar imaging to the next level with the Calcium Gen-II 1.25" Unstacked Ca-K Solar Imaging Filter with LPFC. This advanced filter allows you to explore the fascinating boundary region between the sun's photosphere, visible in white light, and the chromosphere, typically observed with narrow-band H-alpha filters. With the Calcium Gen-II filter, you can observe not only familiar white light structures like sunspots, but also the chromospheric network that covers the sun's entire surface. This network is a precursor to sunspot formation and is accompanied by supergranulation cells and Ellerman Bombs. The filter operates at the emission line of calcium at 394 nm, which is in the near UV spectrum. As such, it's crucial to remember that this filter is designed for camera use only, as the human eye is not equipped to safely handle UV radiation. For optimal results, we recommend using this filter with a monochrome camera and mirror telescopes. While many lens telescopes can still be used for calcium observations, unmodified DSLRs may require significantly longer exposure times. All calcium filters necessitate an additional solar filter. The Baader GEN-II package includes a sheet of AstroSolar Photo Film OD 3.8, 20x30 cm (#2459278) to construct your own solar filter, allowing you to start observing without the need for additional purchases. The Calcium Gen-II filter supersedes the older K-Line Filter 1 1/4" (stacked) # 2458355. Thanks to modern manufacturing techniques, this single filter provides superior quality and a narrower half-band width (FWHM) of only 5 nm, eliminating the need for filter stacking. The low-profile filter mount is only 6 mm high when screwed in, making it compatible with standard filter wheels/drawers. For cameras with a 2"-nosepiece, the filter can be used with a filter drawer like the Baader UFC System or a filter wheel. The Baader Calcium GEN-II boasts all the benefits of the new generation of CMOS-optimized Baader filters, including increased contrast, Reflex-Blocker coatings for maximum halo freedom, identical filter thickness for parfocality, blackened edges for reflection elimination, individually coated filters with sealed coating edges, and Life-Coat for a durable, non-aging coating. In summary, the Calcium Gen-II 1.25" Unstacked Ca-K Solar Imaging Filter with LPFC is a powerful tool for any solar imaging enthusiast, offering a unique perspective on our sun's complex and captivating features.

Mounted Filters with Baader AstroSolar Safety Film OD 5.0 After 15 years of offering AstroSolar film sheets as DIY-product, this system of Baader Solar Filters is designed to retain the true optical quality of the diffraction limited AstroSolar Safety Film. Baader Solar Filters provide a professional and secure solution to observe and image the Sun using AstroSolar Safety Film OD 5.0. Many ready made filters do stretch the filter material like a drumhead in order to make it look like a piece of glass - this absolutely does destroy the image quality, rendering the film useless for high magnification work. AstroSolar must be mounted entirely stress free in order to perform like a high precision plane optical window. It sounds like a contradiction with traditional perception of quality, but AstroSolar must show slight ripples! Only when the film is being put under stress by an improper cell mount it performs just like any single side coated glass-filter made of untreated float glass. Original Baader AstroSolar Safety Film (OD 5.0), cell mounted and quality inspected by skilled members of their staff Clear white IR-rejecting front ring with reinforcing raised edges along the outer and inner circumference, designed to protect the solar filter material from contact with any sharp metal edge No tool mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. Bolts made to contact the outside or optional (if appropriate) the inside of the optical instrument tube Non-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equipped with a machined indicator to point towards the adjustment index Additional Phillips screws are integrated into the sliding fasteners, so that the centering bolts can be firmly fastened with a screw driver if preferred by the user Index scale provided beside each adjustment slot - adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubes Black sliding washers supplied to securely cover the full length of the adjustment slots in the aluminum frame - for blocking sunlight from passing trough the filter cell beside the filter area Three security straps included, to secure the position of the filter cell with Velcro-adhesive pads. A safety feature to absolutely ensure a secure fit in front of the telescope under any circumstances (gust of wind asf) Warning text printed onto the front side of each filter cell: Read the Instructions before use Cardboard gift box fit for safely shipping the filter ASTF (AstroSolar Telescope Filter) Baader Solar Filter for high-end Telescopes This family of solar filters is made in the most elaborate way. AstroSolar must not be put under stress, neither during mounting the film, nor during any temperature change. For this reason the ASTF-Filter features a temperature compensated cell. The film itself is repeatably cemented onto an injection molded ring, whereas the substrate of that ring has the same thermal expansion like the Astro Solar Filter material itself. This free floating film-carrier ring is held onto the aluminum frame with the help of another holding ring made of fiber reinforced plastic - for a maximum of security against breaking of the cell. This temperature compensated cell enables the AstroSolar filter material to retain its excellent optical quality at any temperature - be it -30Deg C or +50Deg C. Safe for solar observation and photography with all high-end telescopes and extreme tele-lenses. Suitable for highest magnifications and detailed observation of individual sunspots AstroSolar Safety Film OD 5.0, mounted stress free in temperature compensated cell No astigmatism during winter observation or with temperature changes in summer Scope of supply: ASTF Filter come with two sets of centering bolts in 38mm length. 3 bolts with 10mm diameter and 3 bolts with 20mm diameter, adjustable to the tube diameter of your telescope or dew cap.