This very high quality, dual-speed Crayford focuser for reflector telescopes from Guan Sheng Optical (GSO) is a joy to use. You will wonder how you ever lived without it once you install it! It will make achieving precise focus for visual observations and astrophotography a breeze and you will experience very smooth and precisely controlled focuser motion with zero backlash and zero image shift.
SVbony SV190 UF18mm Ultra Flat Field Eyepiece FMC สำหรับกล้องดูดาวขนาดฟอกัสเซอร์ 1.25"ทุกรุ่น
SVBONY SV190 18mm Ultra Flat Field Eyepiece delivers high quality in a very compact design. This eyepiece removes field curvature at the edge, resulting in a flat, distortion-free image, and features over-sized lenses with a large 65° field of view with 20mm eye relief. All lenses (8 lenses in 5 groups) have a broad-band multi-coating (FMC) and blackened lens edges, and the plug-in sleeve is equipped with a thread for 1.25″ filters.