Mike, I don't have the curvature measurement but I know it is an f/3.8. The mirror is also parabolic, so I think the Rosin design is out. I don't know if you...
Ok then I will presume everyone is going with 1.998 +0-.003 for the diameter. I can now start on the convex element, when I know what sag to put on the concave...
He reduced the price and a little bargaining got me a good deal. So now I am the proud owner of a 2.6" secondary: the first actual piece of the project I won...
We just got back in this afternoon. I'll have a look at the design and give you the full descriptions for both elements (assuming your nominal fab values). ...
Ed and I had a good visit tonight the old fashioned way, using that thing called a telephone, and quickly came to the final design values Ed will edge the...
Mike/Ed, thank you guys for the (many) late night effort(s) and the continuing committment to the project. Morris ... values ... Ed ... values ... properly. ...
So Mark Harry is close to completing my mirror and the specs are to die for. It will be sent to Spectrum Coating for their Max 'R' (EAL) coating when it is...
Being as the focuser will have the 'Ed Cell' in it what effect on collimating (if any) will this have? What tools will work e.g. Catseye or Blug or other? ...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Astrograph group. File : /Mike Jones...
Astrograph@yahoogroup...
Mar 8, 2008 4:34 am
148
I put the ZEMAX files for the lenses edged to 1.998" OD in the "Edged Lenses, Airspace ring" folder. I also put the 3D AutoCAD file in there as well. Mark...
Have a safe trip Ed and don't even think about the lenses. As far as i am concerned they get done when they get done :) I hope you are going somewhere...
John should have a Moonlite focuser tube in his mailbox shortly so as to enable him to do some cell design work. Ron at Moonlite has been VERY helpful in this...
Unfortunately I have a 6-8 week trip away from home coming up too. April 14th to May 23rd ish. I'm going to work a Nuclear power station refueling in Nebraska....
Hi Frank, Yep, I messed around with it some and will get back to you. But not for now; this pitiful disaster of a "broadband" ISP we're on that runs more like...
Mirror left for Spectrum today and expected turnaround is about a month. I am hoping to pick up a blem Moonlite at NEAF if they have any and Ken's Rings has...
hi Morris ! as a frenchy, my english is not really fluent, that's why i don't answer to all posts :\ but i hope i'll be understandable... i will order such...
Bonjour Thierry, je comprends un petit Francaise, votre Anglais c'est tres bonne :) That's the best I can remember from my French lessons at school I am ...
hi Morris ! ... i made a 3D basic simulation of what i plan to do : files in the folder "Files > Thierry files > making a sandwich OTA" as an example if i plan...
