A versatile photographic adapter for SCT type telescopes. The adapter
will attach on the back of an SCT telescope. It has an SCT (48mm) female thread
on one side and T-thread (M42 x 0.75, male) on the other. The adapter can be
split offering a variety of lengths i.e. 5mm, 20mm, 35mm and 60mm.
Typically the SCT (female) side will screw into the back of an SCT telescope.
Accessories like filter wheels and DSLR cameras with an appropriate T-ring can be attached
on the other side.