The main mirror housing is made of precision molded ABS plastic and the two end barrels are precision machined from aluminum. This diagonal can only be used with refractor telescopes and some catadioptric telescopes like Schmidt-Cassegrain, Maksutov-Cassegrain, etc. It not meant for use with Newtonian / DOB reflector telescopes or other variants of Newtonian telescopes.
SVBONY SV221 Mirror Diagonal 1.25-inch 90 Degree Brass Compression Rings for Refractor Telescope
Enhanced Aluminum Die Structure
Designed with enhanced aluminum die, SV221 can provide higher light transmittance & clear vision. 1.25 inches diameter which can be applied to a 1.25 inches telescope and a 1.25 inches eyepiece.
Brass Pressure Ring
Built-in brass pressure ring, you can never have to fear of damage, since brass pressure ring provides non-contact personal protection for eyepiece.
Stable Installation & 90 Degrees Design
With a 90 degree design, you don't have to bend over when performing visual observation and the observation experience can be more comfortable.
SV221 Diagonal Mirror Image VS Normal Image
The Applicable Scene of SV221 90 Degree Mirror Diagonal--
bird watching, sightseeing and astronomical observation
Package Includes:
- SV221 1.25" 90 Degree Mirror Diagonal
- 3PCS M3 Screws
- 1PCS Dust Cap
- 1PCS Dust Plug
Specifications:
| Brand | SVBONY |
| Model | SV221 |
| Size | 1.25 inch |
| Optical Design | Mirror Diagonal |
| Inner Connection (Lens Sided) | Thread M28.5x0.6 |
| Outer Connection (Lens Sided) | Barrel 1.25 inch |
| Inner Connection (Eyepiece Sided) | Clamp 1.25inch |
| Reflection Surface | Aluminum Coated |
| Reflectivity | >92% |
| Image Orientation | Erect Image, Mirror Inverted |
| Optical Length | appr. 73mm |
| Clamping System | Screw Clamps |
| Deflection Angle | 90° |
| Clear Aperture | 29.5mm |
| Material | Plastic & Metal |
| Net Weight | 90.5g/3.19oz |
Features：
1.The main mirror housing is made of precision molded ABS plastic and the two end barrels are precision machined from aluminum
2.92% above reflectivity across the visible spectrum
3.Brass lock Screw for eyepiece or adapter and brass Compression rings features more precision and prevent barrels or the surface of eyepieces from marring and scratching
4.With dustproof cover, can keep the lens cleaning
5.Support connection 1.25inch filter, internal extinction treatment.
6.Please Note: This diagonal can only be used with refractor telescopes and some catadioptric telescopes like Schmidt-Cassegrain, Maksutov-Cassegrain, etc. It not meant for use with Newtonian / DOB reflector telescopes or other variants of Newtonian telescopes