GSO are Astrotech's OEM supplier for a lot of items, although Astrotech make certain modifications to the products as they see fit which USUALLY are worth while... Take the GSO 8" F/4 Newt.. Good imaging scope, The Astrotech 8" F/4 Imaging newt - Great imaging scope.. The difference is that the AT model has a tube that is 9.4" longer, giving the scope a built in dew shield, and the extra contrast that goes with that.. And also, 15 knife edge baffles running down the inside of the OTA to stop off axis reflections...
If Astrotech are advertising a 16" truss RC, it is highly likely that GSO are making the optics..
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