2" SCA T-Adapter center and square loads perfectly in your visual back and provides a secure adaption for the best imaging result Announcing the Self-Centering Camera T-Adapter for Astrophotographers. The Self-Centering Adapter (SCA) mechanism provides repeatable and reliable connection between your telescope and the camera. The SCA T-Adapter fits any make telescope that uses a 2” visual back. Use your existing T-Ring matches your brand of camera and thread onto the SCA T-Adapter. 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 rings fill the gaps and faithfully centers your camera in the tube. In addition, even if the drawtube is slightly deformed in diameter, egg-shape, the rubber rings in the SCA will compensate the differences and faithfully centers your camera. Short SCA Profile Prevents Oscillation Short profile design keeps the installed camera stable from low frequency oscillation transferred from the telescope in a windy environment. The back focus of a 2" SCA T-Adapter is 19mm(0.75") measured from drawtube shoulder to the bottom T-Thread. SCA Damps Vibration The all-around adjustable tightness rubber contact damps unwanted vibrations from the telescope provides you a sturdy attachment on your telescope for a stable image capture. SCA Accepts Filter Thread 2” T-Adapter has built-in 2” (48mm) filter thread SCA T-Adapter is a dream come true for astrophotographers! Features: Ideal precision prime focus T-Adapter for your astro imaging - SCA Provides 360 deg. rubber square rings contact for the most secure and reliable adaption in your focuser - SCA Brings your Camera to the Closest Optical Axis in the Drawtube/Visual back for BEST Imaging Result - SCA Eliminates Drawtube/Visual Back Slop - SCA Eliminates unstable locking from thumbscrew or unified compression ring - SCA Accepts the Imperfection of a Drawtube/Visual Back - Short SCA Profile Prevents Oscillation - SCA Damps Vibration - SCA Accepts Filter Thread Back Focus Distance (measured from drawtube shoulder to the bottom T-Thread): 2" SCA T-Adapter: 0.75"/19mm Standard Filter Thread: 2” SCA T-Adapter: 2”/48mm filter thread Dimension: 2" SCA T-Adapter: 2"/55mm dia. x 2"/55mm (L) Weight: 2" SCA T-Adapter: 3 oz.
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