AST Core 6mm M68 Extension Tube | AST-EXT-M68-6 SCT adapter The result was we found

The result was we found a way to make one set of filters for all kind of sensors ranging from KAF- and KAI-sensors

supporting full-frame imaging

For tough technical requirements and safety considerations

which corresponds to OIII emission line

AST Core 6mm M68 Extension Tube | AST-EXT-M68-6 SCT adapter The result was we foundAST Core 6mm M68 Extension Tube This 6mm M68 Extension Tube is designed to provide the perfect balance between ease of use and enhanced optical performance. By adding 6mm of extra focal length to your optical path, it allows for finer focusing adjustments, ensuring sharper, more precise images. You can also easily combine it with other M68 extension tubes or spacer rings to achieve the perfect focus for any setup. Whether you're an astrophotographer