Reviews Doublet Lens - BestBuyersPro.com

SVBONY SV503 Telescope 102ED F7 Extra Low Dispersion Achromatic Refractor OTA Micro-Reduction Rap Focuser for Astrophotography

102mm objective lens diameter and f/7 focal ratio telescope OTA.
large objective lens brings more lights into the scope body and you will get more bright and clear image.
Doublet air spaced achromatic S-FPL51 ED glass provides you less chromatic aberration image.
ultra wide band multi-layer coating technology.
102mm aperture optics and retactable lens hood deliver bright wide-field images with sharp resolution.
it comes with dual focus rack and pinion focuser with focus knob cover.

Double the power of any 1.25" telescope eyepiece with this T-adapter equipped Barlow lens.
Male T-threads allow secure camera attachment for high-magnification lunar and planetary astrophotography.
A great way to double the number of magnification options, without having to buy twice as many eyepieces.
Doublet lens system is multi-coated for excellent transmission and the internal housing is baffled to eliminate unwanted reflections and increase contrast.
Very compact - just 2-7/8" long - easy to store and carry.

Compact, highly portable binoculars that are ideal for birdwatching, hunting, and more.
Superb Image Stabilization (IS) using optics technology, equivalent to what is used for Canon EF lenses.
36mm/1.42 in. objective lens effective diameter helps provide clear and bright, high resolution images.
Porro II Prisms help provide outstanding image resolution and minimize the loss of light.
Doublet field-flattener for sharp, virtually distortion-free images from edge-to-edge.
Improved power efficiency and battery consumption.
Long eye relief (14.5mm/0.57 in.) helps ensure comfort, especially for those with glasses.
Low-reflective exterior design for birdwatching and other uses.
Environmentally-friendly lead-free glass.

...ight. Fully multi-coated lenses, 11 brightness settings, 3 MOA Dot reticle, 1 inch riser mount and unlimited eye relief greatly improve target acquisition speed and accuracy..
Clearer & Brighter Red Dot: Different from other sights which use a cheap single lens, GODREAMIT red dot sight uses a high-quality achromatic doublet lens(also fully multi-coated lens), providing superior control for minimizing spherical aberration, reducing internal light loss and glare, ensuring even light transmission, making the red dot clearer and brighter. Allow you to achieve fast target acquisition more easily..
11 Brightness Settings for Better Target Acquisition: Because of the high-quality materials and innovative structural designs, the brightness setting at each level is brighter than other cheap sights with 11 brightness settings. So you can easily adjust the red dot to the best brightness and quickly aim at the target..
Waterproof & Shockproof & Fogproof Design for Maximum Durability: The waterproof optics are O-ring sealed and will stay dry even go 30cm deep for 30 minutes. The high shock-resistant design makes the sight can withstand bumps, bangs, drops and the rough-and-tumble environment of the field. Nitrogen inside the sight ensures that interior optical ....

...ight. Fully multi-coated lenses, 11 brightness settings, 3 MOA Dot reticle, 1 inch riser mount and unlimited eye relief greatly improve target acquisition speed and accuracy..
Clearer & Brighter Red Dot: Different from other sights which use a cheap single lens, GODREAMIT red dot sight uses a high-quality achromatic doublet lens(also fully multi-coated lens), providing superior control for minimizing spherical aberration, reducing internal light loss and glare, ensuring even light transmission, making the red dot clearer and brighter. Allow you to achieve fast target acquisition more easily..
11 Brightness Settings for Better Target Acquisition: Because of the high-quality materials and innovative structural designs, the brightness setting at each level is brighter than other cheap sights with 11 brightness settings. So you can easily adjust the red dot to the best brightness and quickly aim at the target..
Waterproof & Shockproof & Fogproof Design for Maximum Durability: The waterproof optics are O-ring sealed and will stay dry even go 30cm deep for 30 minutes. The high shock-resistant design makes the sight can withstand bumps, bangs, drops and the rough-and-tumble environment of the field. Nitrogen inside the sight ensures that interior optical ....

...ight. Fully multi-coated lenses, 11 brightness settings, 3 MOA Dot reticle, 1 inch riser mount and unlimited eye relief greatly improve target acquisition speed and accuracy..
Clearer & Brighter Red Dot: Different from other sights which use a cheap single lens, GODREAMIT red dot sight uses a high-quality achromatic doublet lens(also fully multi-coated lens), providing superior control for minimizing spherical aberration, reducing internal light loss and glare, ensuring even light transmission, making the red dot clearer and brighter. Allow you to achieve fast target acquisition more easily..
11 Brightness Settings for Better Target Acquisition: Because of the high-quality materials and innovative structural designs, the brightness setting at each level is brighter than other cheap sights with 11 brightness settings. So you can easily adjust the red dot to the best brightness and quickly aim at the target..
Waterproof & Shockproof & Fogproof Design for Maximum Durability: The waterproof optics are O-ring sealed and will stay dry even go 30cm deep for 30 minutes. The high shock-resistant design makes the sight can withstand bumps, bangs, drops and the rough-and-tumble environment of the field. Nitrogen inside the sight ensures that interior optical ....

Compatible with mainstream auto guiding cameras.
1.25in and M42 mount interface designed for compatible with SV305 Pro and for Orion ZWO QHY and so on auto guiding cameras(Some camera models require additional accessories to assist in focusing).
Ultra wide band fully multilayer coated lens.
doublet glass and the 30mm achromatic optics prevent irritating reflections can bring you bright and clear images.
Allows easy and precise focus adjustments and f4 aperture optics provides a very wide field of view which will help to quickly find the target when performing astronomical observations.
Comes with the mounting rings with plastic tipped screws as not to scratch the scope tube and it can be moved to any position.
By using high-level CNC metal processing technology.
SV165 guide scope has exquisite appearance.
fine workmanship bringing you visual enjoyment.