Vixen AP-SD81S II-SM Telescope with AP-SM Motor Mount and Tripod
This set includes a compact SD81SII optical tube with the high-performance SD objective lens, an AP-SM equatorial mount assembled from modules, and a lightweight APP-TL130 tripod. Eyepieces are also included as standard accessories, allowing you to start observing immediately by simply connecting a power source or inserting batteries. The SD81SII, the successor to the SD81S telescope, offers improved imaging performance thanks to a newly introduced ring spacer that eliminates light streaks.
SD81SII Optical Tube Assembly
A high-performance photo-visual SD81SII featuring an SD (Super ED) glass lens that effectively suppresses chromatic aberration for clear and sharp star images. Its F7.7 focal ratio provides a well-balanced 625 mm focal length with an 81 mm effective aperture, making it suitable for a wide range of applications, from planetary observation to photographing nebulae and star clusters.
When combined with an SD Reducer HD Kit and an SD Flattener HD Kit (both sold separately), it achieves a 44 mm image circle, covering the full-frame DSLR sensor. The conventional three spacers around the objective lens have been replaced with a ring-shaped spacer, eliminating light streaks and producing aesthetically pleasing star images.
The AP Equatorial Mount combines Surprising Lightness with Easy Operation, offering a Full-fledged Telescope System.
This lightweight and compact equatorial mount weighs just 3.9 kg (excluding counterweights). Easily point the optical tube in any direction by hand and release—it will begin celestial tracking automatically. The combination of the R.A. motor and friction-stop system allows even beginners to use it immediately without complicated operations. For finer directional adjustments, you can use the included handheld controller or the manual fine adjustment knob.
The mount can operate independently with four AA batteries (commercially available) or a USB mobile battery, making it suitable for long observation sessions. Rough polar alignment is easy for everyone using an optional Polar Meter, allowing beginners to set up the telescope quickly. By installing the optional polar alignment scope PF-LII, accurate polar alignment will be achieved with ease.
STAR BOOK ONE Controller Included
You can enjoy comfortable astronomical observation by taking full advantage of the various functions offered by the STAR BOOK ONE controller.
APP-TL130 Tripod
It features three-section telescopic legs that extend to 130cm, the same length as a standard astronomical telescope tripod, yet can be shortened to about 60cm for compact storage. It combines the sturdiness of a telescope tripod with the portability and ease of storage of a camera tripod. The legs have two options at their feet, a common feature on camera tripod legs, allowing you to use either rubber or spike feet, depending on your setup. Rubber tips are recommended for indoor use to protect the flooring. In addition to use with the AP series mounts, it is also compatible with the GP2 equatorial mount and the Porta II altazimuth mount.
| Category | Specification | Details |
|---|---|---|
| Optical Tube Part | Objective Lens / Effective Aperture | 81mm SD Apochromat Multi-Coated |
| Focal Length (Focal Ratio) | 625mm (F7.7) | |
| Resolution / Limiting Magnitude | 1.43 arc sec., 11.3 mag, 134× unaided eye | |
| Size / Weight | Length 585mm, outer diameter 90mm, 3.6kg (Main body 2.3kg) | |
| Finder Scope | XY Red Dot Finder II (one-power aiming device) | |
| Eyepiece Part | Focusing System | Rack and Pinion |
| Threads / Visual Back | Screw-in: 60mm, 42mm T-ring screw; Push-fit: 50.8mm, 31.7mm (with Flip Mirror Diagonal) | |
| Eyepieces (31.7mm barrel) | SLV 20mm (31×, 97 min FOV); SLV 5mm (125×, 24 min FOV) | |
| Tripod | Material / Form | Large hexagonal aluminum, two-stage extension legs (one-touch type) |
| Size / Weight | Legs: 570–1,296mm; Height: 526–1,159mm; Overall length: 598.4mm; Setting radius: 350–710mm; Weight: 3.0kg | |
| Others | Main Accessories | Parts case, counterweight 1kg ×1, 1.9kg ×1 |
| Solar Observation | Use with Sun Projection Screen Set B (sold separately, short-term observation) | |
| Total Weight | 13.5kg (excluding eyepiece) |
Brand: Vixen |
Code: VX26174
Supplier Code: 26174
Brand: Vixen |
Code: VX26174
Supplier Code: 26174
At a glance
This set includes a compact SD81SII optical tube with the high-performance SD objective lens, an AP-SM equatorial mount assembled from modules, and a lightweight APP-TL130 tripod. Eyepieces are also included as standard accessories, allowing you to start observing immediately by simply connecting a power source or inserting batteries. The SD81SII, the successor to the SD81S telescope, offers improved imaging performance thanks to a newly introduced ring spacer that eliminates light streaks.
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SD81SII Optical Tube AssemblyA high-performance photo-visual SD81SII featuring an SD (Super ED) glass lens that effectively suppresses chromatic aberration for clear and sharp star images. Its F7.7 focal ratio provides a well-balanced 625 mm focal length with an 81 mm effective aperture, making it suitable for a wide range of applications, from planetary observation to photographing nebulae and star clusters. When combined with an SD Reducer HD Kit and an SD Flattener HD Kit (both sold separately), it achieves a 44 mm image circle, covering the full-frame DSLR sensor. The conventional three spacers around the objective lens have been replaced with a ring-shaped spacer, eliminating light streaks and producing aesthetically pleasing star images. |
The AP Equatorial Mount combines Surprising Lightness with Easy Operation, offering a Full-fledged Telescope System.This lightweight and compact equatorial mount weighs just 3.9 kg (excluding counterweights). Easily point the optical tube in any direction by hand and release—it will begin celestial tracking automatically. The combination of the R.A. motor and friction-stop system allows even beginners to use it immediately without complicated operations. For finer directional adjustments, you can use the included handheld controller or the manual fine adjustment knob. The mount can operate independently with four AA batteries (commercially available) or a USB mobile battery, making it suitable for long observation sessions. Rough polar alignment is easy for everyone using an optional Polar Meter, allowing beginners to set up the telescope quickly. By installing the optional polar alignment scope PF-LII, accurate polar alignment will be achieved with ease. |
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STAR BOOK ONE Controller IncludedYou can enjoy comfortable astronomical observation by taking full advantage of the various functions offered by the STAR BOOK ONE controller. |
APP-TL130 TripodIt features three-section telescopic legs that extend to 130cm, the same length as a standard astronomical telescope tripod, yet can be shortened to about 60cm for compact storage. It combines the sturdiness of a telescope tripod with the portability and ease of storage of a camera tripod. The legs have two options at their feet, a common feature on camera tripod legs, allowing you to use either rubber or spike feet, depending on your setup. Rubber tips are recommended for indoor use to protect the flooring. In addition to use with the AP series mounts, it is also compatible with the GP2 equatorial mount and the Porta II altazimuth mount. |
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