AST Core 9mm M68 Extension Tube | AST-EXT-M68-9 Galileoscope Dustcap with M68 x 1

Dustcap with M68 x 1 male (outer) thread

It's an ideal instrument for serious astrophotography

This is particularly helpful for solar

Combining the expansive 82° apparent field of view with 19 mm of eyeglass friendly eye relief

: None Stage Diaphragm: None Included Items: 2 bug specimens (encased in clear plastic)

AST Core 9mm M68 Extension Tube | AST-EXT-M68-9 Galileoscope Dustcap with M68 x 1AST Core 9mm M68 Extension Tube This 9mm M68 Extension Tube is designed to provide the perfect balance between ease of use and enhanced optical performance. By adding 9mm 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