Monday, June 10, 2013

%$$$ Save HOTECH SCA 2 Inch Field Flattener for Refractor Telescopes


Buy HOTECH SCA 2 Inch Field Flattener for Refractor Telescopes

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Hight Quality Optics Designed for Refractor Telescopes This field flattener is fully multi-coated on two-element lens allowing the most efficient light transmission without sacrificing the precious collected light from your telescope. It accomodates f5 to f8 refractor telescope. You will see bright and sharp image across the entire field. SCA Brings your Camera to the Closest Optical Axis in the Drawtube/Visual back for BEST Imaging Result To capture great images from your telescope it is essential to position your camera firmly in and on the optical axis of your drawtube/visual back. The SCA T-Adapter center loads your camera in the drawtube/visual back with a simple threading of a compression ring forcing the built-in rubber rings outward radially thereby centering the camera in the drawtube/visual back for optimal installation. SCA Eliminates Drawtube/Visual Back Slop All drawtube/visual back have manufacturing tolerances. And it requires larger diameter to accept various eyepieces and adapters. When the camera adapter is inserted the gap between the drawtube/visual back and the inserting device became a slop problem. The rubber rings in the SCA expand radially according to users own adjustment to fill the gaps. This makes your camera seats firmly in your drawtube/visual back becoming part of your telescope for a secure and repeatable installation. SCA Eliminates unstable locking from thumbscrew or unified compression ring The optical axis is shifted when the inserting device is locked in by thumbscrew. In some cases some poorly made unified compression ring can cause unstable tilt when locking in the drawtube due to loose tolerances between the compression ring inner groove and the uneven tip of the locking thumbscrew in a drawtube. The SCA T-Adapter adapts your camera without using the thumbscrew or the unified compression ring. SCA Accepts the Imperfection of a Drawtube/Visual Back Small imperfection inside the drawtube like dents and scratches the rubber

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