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Amazon.com : SVBONY SV106 Guide Scope SV305 Pro Bundle with Astronomy Camera Telescope Camera 1.25inch Astronomy Guiding Camera for Astrophotography : Electronics
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TS Optics Guidescope Guide Scope Finder AC 80/328 TSL80D
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Amazon.com : SVBONY SV106 Guide Scope with Helical Focuser Finder and Guide Scope Multi-Use for Astronomical Telescope (50mm) : Electronics