SV550 122 APO Telescope Refractor - SV209 0.8x Field Flattener Set for Astronomical Photography
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Key Features
The SV550 APO telescope provides superior color correction and sharp, high-contrast images for detailed astronomical observations.
Paired with the SV209 field flattener, this set ensures flatter images across the entire frame, ideal for wide-field astrophotography.
The combination of the APO refractor and field flattener eliminates optical distortions, providing crisp, clear views of celestial objects.
Designed for both visual and photographic use, the SV550 APO telescope offers exceptional focusing capabilities for detailed lunar, planetary, and deep-sky observations.
Built with high-quality materials, this telescope and field flattener set is lightweight, portable, and easy to set up for both beginners and advanced astronomers.
Unlock the full potential of your telescope equipment for deep space photography with our versatile and multifunctional accessories! Set includes:
Review Video by @NebulaPhotos Unboxing Video
⚡ Shipped: 72 hrs after ordering (Pre-sale products excluded).
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How To Use

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| Brand | SVBONY |
| Model | SV550 |
| Aperture | 122mm |
| Focal Length | 854mm |
| Focal Ratio | f/7 |
| ED Glass | FPL51 |
| Telescope Type | Refractor |
| Resolution | 1.15 arc seconds |
| Coatings | Fully Multi-coated |
| Tube Material | Aluminum |
| Focuser | 2.5" rack-and-pinion, dual speed (1/10) |
| Tube Travel | 87mm |
| Visual Limiting Magnitude | 12.3 |
| Lens Design | Apochromatic |
| Dovetail Plate Length | 300mm |
| Highest Useful Magnification | 244x |
| Additional Thread | M63x1 female thread for adaptions |
| Dew Shield Type | Retractable |
| Tube Outer Diameter | 154mm |
| Net Weight | 6440g/14.18lb |
| Gross Weight | 10000g |
| Brand | SVBONY |
| Model | SV209 |
| Optical Tube Length | 120 Millimeters |
| Eye Piece Lens Description | FMC |
| Objective Lens Diameter | 50.8 Millimeters |
| Telescope Mount Description | Equatorial Mount |
| Product Dimensions | 5"D x 4"W x 3"H |
| Focus Type | Manual Focus |
| Power Source | Focal Reducer |
| Finderscope | Straight-Through |
| Item Weight | 0.45 Kilograms |
Features
- 1. The SV550 APO Triplet refractor with 122mm aperture and f/7 focal ratio, a great travel telescope for observation and astrophotography
2. Fully multi-coated triplet apochromatic optics using an ED center element
3. 2.5" dual-speed rack-and-pinion focuser 10:1 ratio fine focusing with M63x1 female thread for adaptions
4. Retractable lens shade/dew shield-the APO even fits into the hand luggage
5. CNC multi-function Dual hinged split tube rings with a 300mm versatile V-style dovetail, support mounting of various accessories
Telescopes
SV550_User_Manual
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