this sv503 set connected for prime focus astrophotography,give you more playing methods,let's try it now,any questions,contact us freely!
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sv503 prime focus photography, also known as direct focus photography, is a method of directly using the telescope to take pictures without adding any optical objects between the telescope and the camera.
The main objects of prime focus photography are nebulae, clusters and galaxies.This can be achieved by matching the sv503 set with the M42 camera ring.
| Model | SV503-F9359A | SV503-F9359B | SV503-F9359D |
| Type | Refractor | Refractor | Refractor |
| ED Glass | S-FPL51 | S-FPL51 | S-FPL51 |
| Coating | SMC | Ultra-wideband coating（SMC） | SMC |
| Aperture | 70mm / 2.75-Inch | 80mm | 102mm / 4.01-Inch |
| Focal length | 420mm | 560 mm | 714mm |
| Focal Ratio | f/6 | F7 | f/7 |
| Type of Focuser | RAP (Rack and Pinion) | 2 inch Dual speed focuser | RAP (Rack and Pinion) |
| Gear Reduction | 1:10 Fine movement | 1:10 | 1:10 Fine movement |
| Model | W2370A |
| Length | Along the 34mm |
| Width of internal slot | 4.2mm |
| Horizontal length of internal slot | 36.5mm |
| Vertical length of internal slot | 36.5mm |
| Can be fixed | M3-M4 screw |
| Weight | 41g |
| L*W*H | 45*40*25mm |
| Model | SV165 |
| Aperture | 30mm |
| Focal length | 120mm |
| Focal Ratio | F4 |
| Tube travel | 45mm |
| Back Focus Length | 26mm |
| Mount | UNC 1/4-20 |
| Model | SV194-W1077A | SV195-W2054A |
| Size | M42*0.75 | M42*0.75 |
| Male thread | Nikon F-mount Male | Canon EF-Mount |
| Material | Metal Aluminum | Metal Aluminum |
| Net weight | 31g / 1.05oz | 44.7g |
| Model | SV196-W9153A | SV196-W9153B |
| Size | M42*0.75 | M42*0.75 |
| Male thread | Female---SONY A-mount Male | Female---Sony E-mount Male |
| Material | Metal Aluminum | Metal Aluminum |
| Net weight | 35.7g / 1.26oz | 68.3g / 2.4oz |
| Thickness | 10mm | 36.5mm |
Applicable Accessories
US$ 34.99 ~ US$ 69.99
