Nikon Coolpix 990, 995, 4500
Other cameras in the Coolpix range
can be used for Digiscoping but these are the most recent three,
all have the split swivel Digiscoping friendly design and all are
now sadly discontinued.

The Coolpix 4500 is perhaps regarded
as the best of the three, not least for its 4mp and 4X zoom, though
the Coolpix 990 possibly gives a sharper image. The macro mode on
the 4500 is excellent, as an all round and Digiscoping 4mp camera
it is tuff to beat.