1. The SV503 series telescope with the popular dovetail system;
2. Easy to connect the finder and do balance work;
3. Aluminum alloy and brass handy knob material provide solid protection.
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| 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 weight | 3.35kg | 3.95kg | 5.5kg |
| Tube outer diameter | 88mm | 121mm | |
| Tube material | Aluminum | Aluminum | Aluminum |
| Back Focus Length | 90mm | 90mm | 101.9mm |
| OTA Length | 318mm | 465mm | 630mm |
| Dovetail & Ring | Yes | Yes | Yes |
| Dovetail Length | 150mm | 137 | 200mm |
| Model | F9143C/D |
| Material | Precision Aluminum |
| Color | Red/Silver |
| Length | 210mm |
| Width (bottom) | 42mm |
| Width (top) | 35mm |
| Height | 9mm |
| Net Weight | 224g/7.91oz |
| Model | F9144C/D |
| Material | Aluminum alloy |
| Color | Red/Silver |
| Loading Weight | 10kg |
| Dovetail Upside | 39.5mm |
| Dovetail Downside | 45mm |
| Dovetail Depth | 12mm |
| Net Weight | 193g/6.83oz |
1. The popular SV503 70/80/102ED refractor with F9143C/D dovetail system；
2. Easy to connect the finder and do balance work;
3. Aluminum alloy and brass handy knob material provide solid protection.
Applicable Accessories
_md.jpg "SV135 Zoom Eyepiece 1.25inch 7mm to 21mm")
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