SVBONY SV193 Focal Reducer 2 Inch 0.8X Field Flattener Telescope Accessory for SV503 80mm F7 ED Telescope. The objective lens of the OTA features an S FPL-51 extra-low dispersion glass ED element, which virtually eliminates chromatic aberration. This results in the best color correction for an ED doublet lens. The 0.8 times defocusing system shortens the exposure. It can meet the needs of astrophotographers who need sufficient exposure in a short time. With advanced refractor, it can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo. SV182 Finder Scope with 90-degree viewing angle lets you view a more comfortable and convenient operation compared to a traditional straight-through viewing finder.  

This SV48P Refractor OTA 90mm F5.5 Telescope Set is very suitable for entry-level users and astronomy enthusiasts, who want to balance performance and price to use and explore the universe.

The corrector is suitable for SV550 80F6. 75 filter thread for the use of 2" filters in the camera adapter. Maximum working distance from the M63x1 internal thread: 103 mm - space enough for almost all adaptations.

Notice: Since the SV550 80 APO is designed with f/6 focus ratio. When reducing the focus further, the image quality will not be guaranteed. This is why we produce 1.0x flat field instead of 0.8x. 

SV550 80mm f/6 fully multicoated triplet apochromatic optics using an ED center element;

A dual-speed 2.5" rack-and-pinion focuser with 10:1 ratio fine focusing,realizes reliable zero offset image focusing;

Retractable lens shade/dew shield;

Dual hinged split tube rings with a 180mm Vixen-style dovetail

Adjustable red LED light brightness control to illuminate crosshairs and preserve night vision. Single crosshair reticle for accurate centering and guiding of stars. Fully coated optics for excellent light transmission on faint stars. Includes reticle eyepiece and illuminator.

SV193 2" 0.8x focal reducer and field flattener, designed specifically for SV503 80mm f/7 ED Refractor telescopes, which can meet the illumination needs of full-frame shooting. The field flattener corrects the inherent spherical aberration of curved lenses which causes distortion at the edges of the field of view. The default back focus is 55mm. 

SV193 2" 0.8x focal reducer and field flattener, designed specifically for SV503 102mm f/7 ED Refractor telescopes, which can meet the illumination needs of full-frame shooting. The field flattener corrects the inherent spherical aberration of curved lenses which causes distortion at the edges of the field of view. The default back focus is 55mm.  With SV193 0.8x focal reducer and field flattener, it can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo.

SV46P 20-60x80 extra-low dispersion ED spotting scope with dual focus wheel and EV soft carrying bag. If you want to connect it with your Nikon or Canon cameras, we have adapters sold separately.

Svbony SV19 20-60x80 spotting scope perfect for shooting and archery within 100 yards.

Zoom Eyepiece eliminates the need to change eyepieces so you can spend more time viewing the night sky instead of fumbling in the dark when you want higher or lower magnifications.

When you choose a better spotting scope, the SV46 has all the features of spotting and is perfectly combined with Dual speed focus. Whether you use it for bird watching, or hunting, it is a no-compromise system that allows the user to rapidly change the focus of the spotting scope then fine tune the focus for maximum clarity. You deserve it.

This bundle set includes SV208 8x50 finder scope, SV188P diagonal, 0.5x focal reducer, 1.25inch ND filter for moon viewing, multi-function dovetail slots, 1.25 '' T adapter mount with M42 threads and slr camera adapter. It is suitable for moon viewing and photography.

Fully multi-coated optics; the eyepiece ensures that each glass surface has multiple layers of coating to obtain a better image quality

All-metal structure; the eyepiece has fine workmanship and fine materials

Matt blackened; the edge of the lens is matt blackened to prevent stray light interference

25mm large eyepiece; plossl eyepieces with 25mm and longer focal lengths are good choices for spectacle wearers; can better protect the eyesight of the observer

2 sets of 4-piece optical structures; the super plossl eyepiece structure has good compatibility

The SV207 series are classic Plossl eyepieces that offer higher performance than the majority of eyepieces supplied with telescopes.  

The introduction blog link: What can we know about the new Super Plossl 50° SV207 eyepiece set！

• 8x50 finder scope; 50mm large objective lens enables more light to enter; providing a bright image; making it easy to aim anywhere in the sky; a large field of view of 7.3 degrees
• Erect image and humanized design; built-in BK7 correct-image roof prism ensures right-side-up; left-to-right correct views; which is in line with the basic observation habits of people
• Dark field illumination function; under extremely dark observation conditions; the red LED illuminator can illuminate the reticle; assist observation and facilitate finding the target
• Glass reticle; the glass reticle has higher seismic stability; high precision and long service life; at the same time effectively avoids the problem of the cross line blocking the target
• Objective lens thread focus and reticle parallax compensation adjustment; ensure the target and the reticle are in the same focal plane; angle adjustment control knob can adjust the reticle and observation angle

Svbony 1.25 inch plossl 4mm fully multi-coated eyepiece for astronomical telescope

10X power magnification and large field of view, specially designed for outdoor activities such as climbing, hiking, driving, watching wildlife and scenery.

Powerful nautical binoculars for outdoor: navigation boating hunting and birdwatching.

Buy a Pare of Red Color Binoculars for the Football Team You Love. 

Svbony SV118 1.25'' 2x achromatic metal barlow lens for astronomy telescope  

Fixed folding rubber eyecup allows easy use with or without eyewear

A two-step anodizing process results in a beautiful matte finish that resists reflections and glare

Sturdy anodized aluminum barrels are threaded for any 1.25" filters.

The edges of the optics are blackened for increased contrast, and prevent internal reflections

 Anti-reflection fully multi-coated optics ensure bright and clear high-images at any magnification

1.For accurate polar and go-to alignment and centering guide stars for photography

2.Red LED-illuminated double-line reticle with a high-contrast 40°field of view

3. 12.5mm focal length and 11mm eye relief forcomfortable observing experiences

4.Fully Multi-coated optics & Blackened inner wall ensures high light transmission

5.The eyepiece is powered by 3* Cell battery, and the Illumination is adjustable.

Svbony sv10 is a fixed-focus binoculars of 8x25 ,no need to focus and easy to carry ,  Just take it to view whatever you like!