Jump to content
Sign in to follow this  
Radar

C14 Mirror Modification Mod

Recommended Posts

I am thinking about tinkering with death. Actually, its not that bad, but I'm thinking about pulling apart my C14, and building some type of bracket that holds and fixes the primary mirror in position permanently, getting rid of the in built focusing system and simply using a crayford style focuser to handle focusing. I think this would remove any mirror flop. At the moment, I don't get much mirror flop, but when I do its enough to ruin collimation, ruin an accurate computer pointing model and if it happens during an exposure can cause poor stars and the edges of subs to all be different. 

I know the mirror already has screw holes in the back of it, I already have flop stoppers which actually work okay, but it could be better. Not sure if anyone has any comments or suggestions about this. I don't envision the mod would be overwhelming difficult. 

Ray

Share this post


Link to post
Share on other sites

There's quite a number of articles out there (I looked into this years ago) about how to either clamp the mirror - or better still - provide a bit of stiction between the outer edge of the mirror and the OTA.  With the stiction method you can focus and it doesn't tend to flop.

Greg

 

Share this post


Link to post
Share on other sites

Cheers Greg. Cheers Dave. I got the exact same advice from FB the other day. I hadn't thought of it. I'll try and do this early next week and document my results. 

Ray

  • Like 1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×