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Thanks to all for the advice
Thanks for the advice everyone.
I admit that I was quite concerned about messing with the primary mirror so spent weeks reading and watching YouTube videos before starting the journey.
I first tried the Takahashi scope that I had successfully used previously but my guide stars in particular (OAG) had tails.
So then I had several goes using the Howie Glatter laser and to be honest the desktop results looked good. However once I put my OTA back onto the mount and connected my cameras the images confirmed that more tweaking is required.
I am also thinking that I should be following the final stages of the DSI method - I avoided that because it looked quite complex. I may be able to utilise an artificial star (initially at least) to make it easier.
Cheers
John
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