Vixen BT81S-A 81 mm astronomical binocular
BT81S-A Vixen astronomical binocular (eyepieces and mount sold separately). Features 81 mm achromatic lens, 480 mm focal lenght.
Vixen BT81S-A astronomical binocular
BT81S-A Vixen astronomical binocular (eyepieces and mount sold separately). Features 81 mm achromatic lens, 480 mm focal lenght.
Features
|
Objective lens |
81 mm Achromatic, Single coating with Mgfl |
|
Focal length(Focal ratio) |
480mm (F5.9) |
|
Limiting magnitude |
1.43 arc seconds / 11.3 |
|
Light gathering power |
134x unaided eye |
|
Size / Weight |
480mmL x 190mmW x 155mmH / 4.1kg |
|
Interpupillary distance |
58mm to 102mm |
|
Visual back |
31.7mm push-fit |
|
Accessory |
Finder bracket shoe*1 |
Note: Eyepieces are sold separately.*2
*1 An optional XY red dot finder or 7X50 finder scope with finder bracket is available for the BT series of Binocular Telescopes.
*2 Both the LV Zoom and NPL eyepieces are not usable on the BT Binocular Telescopes. Be sure to use Vixen eyepieces with a focal length longer than 10mm (medium to low magnification) to prevent from alignment errors at high magnification.
| Product Status | New |
|---|---|
| Package width | 30 cm |
| Package height | 30 cm |
| Package depth | 60 cm |