16 inch GSO RC collimation - autocollimator or TAk scope/?

[tegwilym]

I'm getting basically nowhere with collimating our club's big 16 inch Ritchey Chretien. I've been reading a lot and asking questions on a FB page and other places.  

Has anyone here collimated with the following:

• Takahashi Collimation scope
• Autocollimating eyepiece

What are the pros/cons of using these?  The Takahashi is a lot more $$ and reading about the Autocollimator that seems to be a good alternative to get things lined up perfectly.  

I've spent probably over 20 hours on this over the last months.  We bought the scope over a year ago, and still haven't had any good images on it due to the challenges.  Either option will work, I can get funding from the club no problem - they know I've spent a lot of time on this already!   I'm very interested in getting this working, we plan on doing a lot of "virtual" outreach during this virus pandemic, but nobody wants to see and hear me cussing online as I mess with the thing.

If I can get something that I can get this working in a few hours - priceless!   Chasing the collimation endlessly is just getting very old. 

Thanks in advance for any tips!

Tom

[xthestreams]

What was the result? I’m using a Tak and a Glatter. Glatter wins hands down. 

[andrew s]

For the Takahashi collimating scope the secondary needs a central spot to work as designed.

Regards  Andrew