If you're thinking of the FS-60CB as a portable imaging kit, there are also two very useful accessories that it works well with (not included as part of this sale):
*
Reducer/Flattener to convert it to a 255 mm f/4.2 scope
*
Extender 1.7x CQ to convert it to a 600 mm f/10 quadruplet
* combine the 1.6x extender and 1.7x CQ extender for a 960 mm f/16 scope
Here's a photographic "serving suggestion" for putting together a super portable imaging kit - the Tak FS-60CB kit with a Canon DSLR and Astrotrac Travel System (not included in this sale, obviously).