Optec 3" to STL Camera Mount Fits the 4-bolt Pattern on the STL for the TCF-S3 & Pyxis 3"

The STL line of cameras from SBIG, support some of the largest CCD chips available. The usual T-thread mount adapter does not have enough clear apertures to accommodate these chips without vignetting. This adapter uses the 4-bolt holes in the front plate of the STL to secure the mount giving a full 2 inches I.D.