Thanks for the tips. A question... the Bahtinov mask works when I use a x2 barlow? Hum! I´m writing it and I´m answering myself "of course, stupid!" I will do a mask. I have one from my 10" but I feel is nor usable. And It need a hole for the secondary support. OK. Next work!
About treatments... Somebody know somewhere with a thread for to talk about it? but in a friendly way
