SVBONY SV503 70F6 ED Astronomy Telescope Installation Guide
- June 13, 2024
- SVBONY
Table of Contents
SV503 70F6 ED Astronomy Telescope
Installation Guide
SV503 70F6 ED Astronomy Telescope
Feature:
- The appearance of the telescope is baked with high-end fine-grained paint, with exquisite appearance and delicate feel
- The objective lens features a S-FPL51 extra-low dispersion glass ED element, which eliminates chromatic aberration. This results in the best color correction for an ED doublet lens
- The lens adopts optical processing and low polishing technology, which is carefully carved
- The deceleration ratio of the two-speed 2” toothed focusing seat is 1:10, which makes it easy to achieve accurate focus
- Metal hoop ring and 2” to 1.25” adapter, you can use it with 2” and 1.25” focuser
- The focuser can hold >5kg equipment and do 360°rotation to adjust image angle.
Specification:
Product Name| SV503 70F6 ED Astronomy Telescope| SV503 80F7 ED
Astronomy Telescope| SV503 102F7 ED Astronomy Telescope
---|---|---|---
Type| Refractor| Refractor| Refractor
ED Glass| S-FPL51| S-FPL51| S-FPL51
Coating| SMC| SMC| SMC
Aperture| 70mm / 2.75-Inch| 80mm /3-Inch| 102mm / 4.01-Inch
Focal length| 420mm| 560mm| 714mm
Focal Ratio| f/6| f/7| f/7
Type of Focuser| RAP (Rack and Pinion)| RAP (Rack and Pinion)| RAP (Rack and
Pinion)
Gear Reduction| 1:10 Fine movement| 1:10 Fine movement| 1:10 Fine movement
Resolving capacity| 1.97″| 1.5″| 1.17″
Limit value| 11.3| 11.6| 12.1
Light gathering capacity| 100x| 130.6x| 212x
Max. Useful magnification| 140x| 160x| 204x
Tube/total weight| 2.22kg/3.35kg| 2.9kg/3.95kg| 4kg/5.2kg
Tube outer diameter| 88mm| 92mm| 121mm
Tube material Back Focus| Aluminum| Aluminum| Aluminum
Length| 90mm| 90mm| 101.9mm
OTA Length| 318mm/12.52inch| 465mm| 630mm
Dovetail & Ring| Yes| Yes| Yes
Dovetail Length| 150mm| 137mm| 200mm
Package size| 455210190| 540230215| 785250245
FAQ
-
I did notice while able to achieve good focus with the camera i was not able to do so with an Svbony eye piece and am wondering. which eyepieces work or do i need a some sort of extension tube?
SV503 is a short FL refractor, you will need an extension tube（70mm) is fine or a diagonal like the SV188P to extend the focal length as the SV503 is short FL telescope to reduce CA and gather more light information.I test the 6mm to 34mm eyepiece with SV503 80ED and SV188P diagonal, all can work well. -
The OTA tube to back focuser screw size(Black to white boundry):
70ED：M82X1
80ED：M86x1
102ED：M104.5X1
-
The accessory you may need for the SV503.
https://www.svbony.com/blog/What-accessories-do-you-use-with-SV503/ -
Screw specification:
The front end screw size: M3
SV503 hoop screw size: M6 and 1/4’’
SV503 Dovetail width:
3.8cm
4.3cm -
Different SVBONY finder’s installation methods
