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.

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. 

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.  

The popular SV503 series refractor will provide the best optical quality, whether you use it for Deep-Sky Object or Planets, visual or photography;

The compatible SV193 reducer will increase the field of view and improve the image flatness， which is essential for deep-sky photography;

The SV165 guide scope is very mini and easy to use, widely used in different Astro-observations;

The side dovetail slot provides you with an easy way to install the finder.

The SV503 series deep-sky photography set. This combination is more designed for Electronically Assisted Astronomy (EAA) such as different cameras. 

Enhance your SV503 80 experience with our recommended accessories! Introducing the SV193 flat field flattener/focal reducer, versatile multifunctional dovetail slot, and SV211 telescope handle bar for added convenience. But wait, there's more! Customize your setup with our hot-selling SV220 2inch dualband narrowband filters and SV172 PWM function 430mm dew heater strip.

Explore the perfect combinations in bundle1, bundle2, and bundle3 for a truly optimized astrophotography experience. Upgrade your SV503 80 today and capture the stars like never before!

This SV503 102ED telescope bundle set includes 102ed f/7 refractor OTA, SV193 focal reducer, SV211 handle bar(screws and mout screws inside) and SV188P diagonal 1.25 inch. It is worth mentioning that, since the 503 comes with 1.25-inch and 2-inch adapter rings, it can easily connect to any 1.25- or 2-inch zenith mirror, barlow lenses, eyepieces or other optical components without purchasing additional adapter separately. 

1.Rugged housing prevents damage;

2.Sliding graceful and soft dual-speed focuser;

3.Ed glass (FPL51) can produce very beautiful and clear images;

4.The fully multilayer coated lens eliminates all reflections on the glass, and it has little or no chromatic aberration at high magnification.

Looking for more info on attaching the 0.8x reducer/flattener to the SV503 102mm ED? You can refer to this link:

https://www.svbony.com/sv193-0-8x-reducer-flattener-for-sv503-102ed-refractor/

This SV503 70F6 ED refractor is an ideal telescope the telescope weighs only about 2.22 kg and thanks to the retractable dew cap it is only 318mm/ 12.52in short. Included accessories: 2" to 1.25" Eyepiece adapter, Dew Shield, Lens Cover, 1.25" Dust Cover, 150mm Dovetail Plate and Optics Tube Ring. Suitable for shooting sun and moon, landscape scenery, deep space photography (works better with 1/2 or 1/3 inch sensor, the pixel size in 3μm-5μm, and need to match the SV193).

Unlock the full potential of your telescope equipment for deep space photography with our versatile and multifunctional accessories! Introducing the SV605CC osc color deep space camera IMX533, SV165 30mm f/4 guiding scope, SV905C cmos guiding camera,  SV193 0.8x filed flattener & focal reducer. You can choose whatever you like.

This SV503 80/102 ED telescope set includes refractor OTA, SV193 filed flattener & focal reducer, SV165 40mm f/4 guiding scope, SV226 filter drawer, SV211 red handle bar, dovetail slot, and a bahtinov mask.

This SV503 102ED Telescope Bundle Set includes sv503 102ed refractor OTA, sv193 focal reducer, sv188p diagonal and a 2inch UV/IR cut filter.

This sv503 set connected for prime focus astrophotography, can give you more playing methods.