Commanderfish Posted March 11, 2016 Share Posted March 11, 2016 I'm about to receive an Alt Az mount (specifically an Ercole Giro mount). My eyepieces range from 1050 grams down to 431 grams (they have green letters on the side ;)) - and I have a little 3.5mm for occasional lunar use which is probably about 250g. I know that changing from the heavy ones to the light ones is going to change the balance on the setup, especially on my 127mm Apo which is 952mm long (FL). This requires re-balancing by loosening the tube rings or the dovetail and sliding the scope. Doable but annoying, and not without risk for the scope. I saw Stu's fantastic sliding counterweight system which he built for his big Vixen Apo. I was thinking about replicating it, but then wondered if there was a simpler way of doing it which could easily be applied to different scopes. So I thought: what about small counterweights, either magnetic or velcro? I could attach a few to the focusser when changing from a big heavy 2 " to a lighter one. A handful of 100g and 200g weights would solve the problem. I realise however that my OTA is aluminium - I guess most are these days. Are there any steel parts a magnet can attach to? Assuming not, self adhesive velcro is easily available from DIY stores. Velcro could be added to the focuser or diagonal, and to each counterweight. Has anyone tried a system like this, or can anyone forsee problems? Link to comment Share on other sites More sharing options...
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
Already have an account? Sign in here.Sign In Now