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Hi Rod
Thanks for the reply. If I keep the bigger cage would this mean I will need to shorten the truss poles to make sure the focal length reaches the eyepiece. This is my very first build and so far I feel I am doing ok. I made my own spider and secondary holder. I also made my own mirror cell using plop. The only thing I’m having issues with is how long to cut the poles. And having a bigger UTA I wasn’t sure if I would be loosing any light hitting the secondary.
The papers that came with the mirror says 2000mm from primary to secondary, then 308mm from secondary to eyepiece, but my secondary to eyepiece is just over 400mm, so I wasn’t sure if I could get into focus being further away. Or just re make the rings a bit smaller as my spider is easily adjusted to fit anything between 18” to 25”.
I had a look at Newt but some things on there confuse me a little bit. As for being a member If the ASV, I am not. I would love to come to one of your meetings though. I was trying to upload some photos of what I’ve built so far but I can’t upload for some reason. But thanks heaps for your help
Daniel
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