350 mm F5 in 2012.

Borg helical focuser is very light enabling balance point to be low, keeping mirror box & rocker box short & light. This also enables the rocker to have very short, stiff sides keeping flexing to a minimum.

The Borg provides enough focusing movement for my range of eyepieces (19mm - 4mm).

Finder is made using old boots 8 X 40 binoculars and shows magnitude 8 stars easily in my moderate-light polluted sky.