3. One mirror for multiple purposes, integrating star guidance/searching/viewing: The 40F4 barrel structure adopts a modular design, and the entire barrel consists of four parts: the objective lens group, two sets of T2 extension tubes, and a set of T2 to 1.25 inch connecting rings (all connections are completed through standard M42 * 0.75 threads); Customers can complete different combinations and combinations according to different scene requirements (by removing the T2 extension tube, a 1.25inch zenith mirror and eyepiece can be installed for observation and star finding)
4. Multi layer extinction: highquality objective lens edges coated with black+star guide tube painted with black extinction
5. Lens adjustment cylinder with digital identification: convenient for repeated focusing; The threaded rotating cylinder of the objective lens has laser marked data scale markings, which facilitate the marking of the focusing position of the guide star and improve the efficiency of repeated focusing.
Features:
1. A new type of short focal length optical fast imaging telescope multifunctional guiding mirror
3. Remove the lens barrel and install a 1.25inch zenith lens for visual inspection
4. Front focusing device with scale for easy repetitive focusing
5. Rotate the objective lens to adjust sharpness - with a locking ring
6. T2 thread adjustable working distance - suitable for all common automatic guides
8. The bracket is suitable for standard star seekers and is used for installation on the main telescope
Specifications:
1. Brand: SVBONY
2. Model: SV165
3. Aperture: 40mm/1.57 inches
4. Focal length: 160mm/6.30 inches
5. Focal ratio: f/4
6. Lens: 2element lens w/fully multilayer coating
7. Connection: 1.25 "&T2
8. Type of focusing device: Front focusing device
9. Rear focal length: 12.5mm
10. Pipe stroke: 15mm
11. The tailcoat includes 1/4 "screw holes
12. Surface process: Sandblasting oxidation
13. Material: Aluminum
14. Net weight: 449.8g/15.87oz
15. Body size: 179x114x59mm/7.05x4.49x2.32 inches
The package includes:
Optical star guide tube
Guide star replacement comes with bracket and base
Six nylon head finger screws
M3 hex wrench
1.25inch dust cover
Lens cover
User manual










Logistics information
Our products are located in Hong Kong, China, and the logistics speed depends on your specific location. According to our experience, it usually takes about 15-20 days of transportation time
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How to choose the correct size:
Step 1 Please measure your foot length carefully.

Step 2 Please choose the correct size according to your foot length and chinese size.
For example, If your foot length is 255 mm , you should choose the size 8.
