SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope ... For Sale
SVBONY 2 inches 90 Deg Dielectric Mirror Diagonal for Astronomical Telescope ...:
Description If you paid for high performance coatings for your telescope, why lose 8% of your light using a standard diagonal We list our dielectric coated diagonals at 99% reflectance, but this does not tell the complete story. While the reflectance is at a little more than 99% for the deep violet and reds, the reflectance for a the rest of the spectrum is essentially 100% Package Includes: 1 x 2" 90-deg Dielectric Mirror Diagonal 1 x 1.25" Dust Cover 1 x 2" Dust Cover Internal brass ring Internal brass ring that the set screw hits to hold your eyepiece inside for eliminates marks on your eyepiece barrel, can secure your valuable eyepieces Read more All metal stucture SVBONY diagonal mirror are made of metal,hard and durable without worrying about damage during use Read more Light weight SVBONY diagonal mirror weighs only 529g,that won't add excessive weight or bulk to your telescope Read more Use Both 2" (50.8 mm) and 1.25" (31.75 mm) Eyepieces SVBONY diagonal mirror can Use Both 2" (50.8 mm) and 1.25" (31.75 mm) Eyepieces,can meet your different needs Read more Features: 1 100% Brand New and Never Used 2 High glossy finish appearance 3 Threads fit standard 1.25'' and 2'' filters 4 Excellent Quality Dielectric Diagonal 5 Provides a Comfortable 90 Degree View from your Refractor 6 Fits Standard 2" (50.8 mm) Diameter Focus Tubes 7 Can Use Both 50.8 mm and 31.75 mm Eyepieces 8 Has a non-marring brass compression ring to secure your valuable eyepieces Material: Metal Net Weight: 529g/18.67oz Features: Excellent Quality Dielectric Diagonal; Mirror Star Diagonal - 99% Reflectivity;Provides a Comfortable 90 Degree View from your Refractor; Fits Standard 2" (50.8 mm) Diameter Focus Tubes; Use Both 2" (50.8 mm) and 1.25" (31.75 mm) EyepiecesNew 2" 90 deg 99% Dielectric Mirror Diagonal for Telescope With 1.25" adapter; full metal;has a 1/10th wave flat optical glass surface;solid aluminum housing;threaded to accept standard 2" filters;The 2" eyepiece holder uses a non-marring brass compression ring to secure your valuable eyepieces. The 1.25" adapter also has a non-marring brass compression ringBoth sizes of eyepieces may be used and are protected from dings and scratches that would result from a standard set-screw. This 2" diagonal works with any Refractor that accepts a 2" star diagonals. It can also be used with Schmidt-Cassegrain or Maksutov-Cassegrain with an optional 2 inch visual back (See below)Dielectric diagonal is especially important;A standard aluminized diagonal has about 92% reflectance;And this decreases with time as the aluminum mirror surface agesFor the vast majority of the visible spectrum;the reflectance does not vary more than about 0.1% below 100%;And the dielectric surface does not age like aluminum;This combination leads to the equivalent of a little more light grasp compared to standard diagonals Product Details: Product Dimensions: 1 x 1 x 2 inchesItem Weight: 1.17 poundsDate First Available: April 23, 2019Manufacturer: SVBONY Handling We will ship all orders within 1 business day of payment. Delivery We Do Not Ship Outside of the Continental US or PO Box Addresses. Return Policy All items qualify for returns within 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged. Feedback We take our reputation seriously, we buy and sell online, so we understand the value of trust. If you are unsatisfied with your order, please contact us and we will work with you to resolve it to your satisfaction.