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URL: http://www.thaiexcite.com/GSO-2-M-LRN-10-1-Linear-Bearing-Crayford-Focuser-for-Reflectors-Base-plate-curvature-suits-Newtonian-230mm-Tube-.html
ฟอกัสเซอร์ GSO 2" M-LRN 10:1 Linear Bearing Crayford Focuser สำหรับกล้องสะท้อน (พร้อมฐานยึดความโค้งเหมาะกับกระบอกขนาด 230mm)
รายละเอียด
ฟอกัสเซอร์ GSO 2" M-LRN 10:1 Linear Bearing Crayford Focuser สำหรับกล้องสะท้อน (พร้อมฐานยึดความโค้งเหมาะกับกระบอกขนาด 230mm)
The Crayford GSO eyepiece lift with linear bearings is a modern, technically advanced spectacle lift, which is a breakthrough among this type of device. The structure was designed based on two precision bearings moving on a steel rail, which improves the precision of adjustment and ensures increased load capacity (4.1 kg) compared to standard lifts. This allows stable attachment of even heavy astrophotography accessories.
The device is made of anodized aluminum in CNC technology, covered with an indelible black coating, which ensures aesthetic appearance and above-average durability. The chromed inner sleeve moves steadily thanks to two bearings having constant and full contact with the steel rail, even when fully extended. This ensures increased precision and eliminates backlash compared to standard lifts. The linear lift ensures full stability even when the sleeve is directed vertically downwards.
The inner surface of the sleeve has been blackened and matted to eliminate glare and increase the contrast. The extractor is equipped with a microfocuser with a 10: 1 ratio ensuring precise adjustment of the focal point. The lift is dedicated to telescopes with Newton optical system with 230mm tube diameter. It is equipped with a reduction from 2 "to 1¼" and 2 "filter thread. The eyepiece mount sleeve is finished with a practical clamping ring protecting the used accessories against scratches. The movable lift sleeve is also equipped with a millimeter scale for easy focusing.
Technical data:
Diameter of the base plate curvature - 230mm
Minimum height with the adapter installed 2 "/ 1¼" - 87mm
Maximum height with the reduction installed 2 "/ 1¼" - 137mm
Reduction height 2 "/ 1¼" - 10mm
Focusing range - 50.8mm
Outside diameter retractable sleeve - 59mm
output spectacle - 2 "
Reduction spectacle - 2" / 1¼ "
filter thread - 2" (M48x0,75)
width of the steel rail - 14,1mm
number of bearings - 2
Microfocuser - 10: 1
Weight - 0,78kg
Max - up to 4.1 kg