SVBONY SV135 Telescopio Ocular Zoom 7 a 21 mm 1.25 Pulgadas Ocular Zoom Totalmente multicapa 6 Elementos 4 Grupo Zoom Lente Telescopio Accesorio para telescopios astronómicos

SVBONY SV135-This is definitely a must for beginners to start a good eyepiece collection.with this eyepiece, you can enjoy planetary astronomy without spending a lot of money.As a beginner;SV135 is great for starter astronomer!

7mm-21mm linear continuous zoom
Regarding the zoom action; it is stiff enough that you won't accidentally shift focal lengths; but it is also smooth enough that you can rotate it without holding the base of the eyepiece with your other hand

High quality optical design
6-Element 4-Group premium optical with FMC ultra high quality standard coating;It also ensures the transmission of light up to 97% while reducing the loss of light during transmission

40-57°Field of view
It also gives you a clear and bright angle of view while ensuring you get the magnification you need;Compatible with any telescope that accepts 1.25 inch eyepieces

M28.5*0.6 filter thread
SV135 zoom eyepiece has M28.5*0.6 threads on the bottom very convenient for connecting filter;Works great for photography

Note:This zoom eyepiece just for 1.25inch telescope; can't match with spotting Scope

Technical parameters:
Focal length: 7-21mm
Zoon Type: Linear
Lens structure: 6PCS / 4group
Eye Relief: 18mm - 16.3mm
Interpupillary Dist.:15mm
Barrel Size: 1.25"
Field of view: 57~40°
Coatings: Fully Multi-Coated-Green
Rubber Eye Guard: Yes
Meterial: Metal
Color: Black
Thread Size: M28.5*0.6
Overall length: 93mm
Net Weight: 133g / 4.67oz

Package Include:
1xSVBONY SV135 7-21mm 1.25 inch Eyepiece
1xLens Covers (Objective and Eyepiece)
1xLens Cleaning Cloth