Feature

●Extra-low Dispersion glass; SV503 Telescope OTA is designed with ED glass; will give you the crystal clear image;SV503 80ED telescope produces an especially colour true and high contrast image
●Top-quality Material; The appearance of the SV503 OTA is baked with high-end fine-grained paint; with exquisite appearance and delicate feel;all machined by CNC
●Focal reducer and field flattener is one of the essential accessories for astrophotography; SV193 2 inch 0.8x focal reducer and field flattener for refractor telescopes
●With advanced refractor; SV193 0.8x focal reducer can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo
●The front end is a standard 2-inch socket to connect to the main lens; and the back end is M48x0.75 threaded to connect to the camera bayonet; support Full Frame Camera

Description

SV193 2" 0.8x focal reducer and field flattener for refractor telescopes, which can meet the illumination needs of full-frame shooting. With SV503 80ED refractor telescope, it can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo.

A larger aperture means a larger amount of light will get a brighter picture
The top of the tube rings have 1/4x20 threaded holes to attach a guide scope

1 Dual Speed Focus 2 80mm Ultra-clear 3 Metal hoop 4 1.5 arc-second resolution 5 Effective protection

2-inch Barrel Size / M48*0.75 Threads Standard

The front end is a standard 2-inch socket to connect to the main lens, and the back end is M48x0.75 threaded to connect to the camera bayonet (Support Full Frame Camera).

Solid metal construction

Aluminum alloy material, strong sturdy and durable. Hard anodized finish aluminum body to help reduce weight.

The dovetail plate has both 1/4 inch and 3/8 inch threaded holes to attach to heavy duty tripods

1 1.25 inch tube ring 2 Connect Filter 3 Metal hoop 4 Astrophotography 5

Can the SV193 focal reducer be used with other telescopes?

The SV193 focal reducer is designed for fixed field astrophotography with the SV503 80ED refractor. While it will also thread through and work with other makes and models of f/7 refractors that use 2" focusers, its performance cannot be well.

Why use SV193 with SV503 80ED?

The SV193 0.8X focal reducer/field flattener converts the 560mm focal length f/7 SV503 80ED refractor into a 448mm f/5.6 system. The starry sky can be captured wider and the signal-to-noise ratio is better under the same exposure.

What are the effects of using SV193 Focal Reducer?

In addition to shortening the focal length of the telescope for faster photography, the SV193 0.8X focal reducer/field flattener the normal field curvature inherent in all refractors.

What is the required back intercept?

The default back-intercept is 55mm. Using the 360° field rotator (not included), you can meet your composition requirements without turning the main lens, and it can also meet the use of filter wheel/OAG/astronomical camera at the same time.

Connect Deep Sky Camera

The SV503 telescope and SV193 Focal Reducer can be used with the SVBONY SV605MC Cooled Camera for deep sky photography, panoramic astronomy, meteor monitoring and lucky imaging.

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Connect Camera

SV193 Focal Reducer can be used with a camera adapter ring to connect to SLR cameras of different specifications. The adapter ring is not included.

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Specifications

Model	SV503
Aperture of objective lens	80mm
Focal length	560 mm
Focal ratio	F7
Lens Coated	Ultra-wideband coating
Objective Lens type	Double separation lens structure
Limit magnitude	11.6
Telescope tube material	Aluminum

Model	SV193
Backfocus	55mm
Barrel Size	2-inch
Threads Standard	M48*0.75
Lens Structure	3-Elements/2Groups
Lens Coating	FMC
Blackened Lens Edges	Yes
Net Weight	164g / 5.78oz / 0.36lb

2-inch Barrel Size / M48*0.75 Threads Standard

Solid metal construction

Connect Deep Sky Camera

Connect Camera

Specifications

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