Yesterday I must have gotten somewhat bored. I decided to take out a telescope that's been safely stored for a number of years.
"Splinter" is an old 10-inch Newtonian that's been built and re-built a few times. Its last re-build was for comet-hunting (before the automated programs took over).
Splinter is designed to perform (and balance) with or without a 5-inch refractor mounted on it. The idea was to sweep for comets at 30x with the 5-inch. Then, when a suspect was encountered, I would take a quick look in the 10-inch at 100x, and more often than not, it was possible to instantly tell whether the suspect was a comet or not. This arrangement largely eliminated the need to access charts while comet-hunting. It also eliminated the need to swap in and out different eyepieces.
Splinter's altitude trunnions are off-set toward the refrator's mounting rings to better accommodate balance issues. Note also the two racks at each end of the OTA -- for the addition of small lead weights -- for better balance in certain configurations and altitudes.
Note how far the solid tube extends forward of the Newtonian's eyepiece. Splinter was designed to remain operational under rather severe dew or (more often for my area) frost conditions . Splinter has been used even when the entire OTA was covered with a thick layer of frost. Speaking of which -- note also the home-made (but very effective) dew-shield on the Telrad.
Not shown is the 50mm RACI finder that use to be mounted on the side of the OTA, between the Telrad and the Newtonian eyepiece. That finder and its ring mount were removed for use on a different telescope. Splinter has not been used in several years. It went out yesterday for a photo session before being returned to it's protective storage environment.
So, there you have it. Sketcher, who tends to focus almost exclusively on what can be accomplished with small refractors -- actually does have larger telescopes! They just don't come out to play very often