Be as specific as possible when reporting issues and *ALWAYS* include the full version number of the application you are using and your exact *CAMERA MODEL*
NEVER POST YOUR KEY IN ANY PUBLIC FORUM, INCLUDING THE O'TELESCOPE SUPPORT FORUM ::: IF YOU DO YOUR KEY WILL BE DEACTIVATED WITHOUT NOTICE!
- 0
Question
zelonisv_bob
I've used a combination of an Explore Scientific 2" dia. 2x tel-extender plus an 80 mm. extension tube at the end of 112 mm. of draw tube of my ES 127 mm., f/7.5 refractor to capture images with a Canon T1i. I use this combination satisfactorily for imaging almost all deep sky objects, but planets need to be larger on the camera's sensor. For that reason, I bought a 1-1/4" dia. ES 3x tel-extender. Unfortunately, that 3x tel-extender required 251 mm. of extension tubes beyond the end of a 103 mm. of draw tube in order to bring the object to focus. Adding all components together, including the 3x tel-extender itself, I had 421 mm. (16.57 inches) of stuff hanging off the rear of the scope's main tube, NOT including the camera body and its 1-1/4" dia. nose-piece! Does this arrangement sound reasonable? If I had to do a fast slew to an object with all that weight hanging onto the rear of the scope, I'm afraid there'd be whiplash damage ! How do you folks handle Barlows and tel-extenders of 3x and greater power?
Bob Z.
Link to comment
Share on other sites
10 answers to this question
Recommended Posts
Archived
This topic is now archived and is closed to further replies.