Quality Optics; SV503 Telescope's objective lens features an S-FPL51 extra-low dispersion glass ED element; which virtually eliminates chromatic aberration
SV503 telescope can be for experienced observers; but also for ambitious beginners;With SV503 you will get the most authentic Image; Can be satisfied with more discerning observers
Doublet air spaced achromatic; Quality 2-Element objective provides sharp and high-contrast images for travel and mobile use
2-inch rack and pinion; The 2 inch RAP focuser holds heavy photographic accessories safe
Area of application; You can apply SV503 OTA to astrophotography; moon; nature observation; nebulae and galaxies