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 ARCTURUS DELUXE LASER BRACKET Our finest laser bracket yet! Solid construction with full articulation via six adjustable screws. This bracket comes equipped with a quick release base that utilizes the same "T" design shoe common to most meade saddles. The supplied base has two screw holes that will fit the standard screw pattern found on most optical tube assemblies.
BAHTINOV FOCUS MASKS This innovative concept was invented by a Russian amatuer astronomer, Paul Bahtinov.The Bahtinov mask allows digital astrophotographers and visual observers to get razor sharp focus in seconds! The method is very fast and incredibly sensitive. There is no guessing when you are focused during times of poor to moderate seeing. Simply put the mask and the status of your focus will become immediately apparent. The masks have a series of slots that create a unique diffraction pattern that can be used to quickly bring your telescope to focus with an absolute minimum of fuss.
Beyond Routine CleaningROR stands for “residual oil remover.” Unlike other lens cleaners, ROR is designed to emulsify and remove the microscopic film of oil residing on the surface that is caused by environmental pollution. The Best Optical Cleaning FormulaCamera lenses to flat screen TVs. It has been used and tested on everything from multicoated lenses to beryllium surfaced contacts and has proven itself time and again to be the finest and safest lens cleaner on the market today.
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 ARCTURUS 12 VOLT 7 AMP POCKET BATTERY PACK BEST 7 AMP BATTERY PACK ON THE MARKET AT THIS LOW PRICE! Portable power to run/charge your scope, cell phones, camcorders, worklights, laptops. Complete with AC Charger and belt strap making it easy to attach to any tripod mount. Strapping the battery to the mount gives added stability to your mounting system.
ARCTURUS 2 INCH 45 DEGREE DELUXE ERECTING PRISM Full 2 inch aperture fitted with brass compression ring. Sharpest and brightest 2 inch erecting prism on the market. This new 45° EP will work with any 2 inch or 1.25" eyepieces and scopes with 2" eyepiece holders. Supplied with 1.25 inch adapter that is also threaded to accept 2 inch filters. It will turn upside down images right side-up and give correct left-to-right image. This high-quality, low-cost erecting prism will set the standard in erecting prisms!
The Arcturus Broadband & Narrowband Nebula Filters use the very latest in optical filtering techniques to produce a fine light pollution filter. The filter element is a material that has its passband precisely controlled through excitation by a laser. The material is then laser-cut and placed into a filter holder, resulting in a filter that blocks light at wavelengths typically found in outdoor lighting systems. The Arcturus Narrowband Nebula Filter makes a fine light pollution filter that passes a very high percentage of light originating from stellar sources. The filter is threaded to accept another filter or other accessory. Attached to an eyepiece, the flter protrudes an additional 5/16" (7.2mm) beyond the end of the barrel.
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 NEW PERSPECTIVES ON NEWTONIAN COLLIMATION The long-awaited fifth edition of Vic Menard's classic Newtonian collimation reference manual is here now! Over 30 new illustrations and images, 16 chapters, 80 pages, 25,000 words. The first major rewrite in 10 years. Here's what Vic has to say about this work .... The fifth edition of New Perspectives on Newtonian Collimation is the product of more than five years of online discussions, more than five months of collaboration with Jim Fly and Jason Khadder getting the graphics just right, and more than five weeks of edits (resulting in five draft copies and various tweaks).
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