Quote:
Originally Posted by Bassnut
ummm, I dont see the term "PE" or even more important,"non periodic error", without them ,your pissing upwind  . On the other hand, if you got pin point stars with a SINGLE 45min exposure, 1/ your in the wrong job, you should be making mounts. 2/ if you can make them that good at less than $20K youd be a very rich man in a very short amount of time 3/ I would grovel in the mud, apologising profusely.
gimme PE stats |
I shouldn't be doing this, doesn't do my blood pressure any good.
Go to the library, pick up the book How to make a Telescope by Jean Texereau. Read the chapter on Sector Ribbon Drive. If you then understand the principle of that drive come back and tell me where PE comes into consideration. No offence meant. But I go back 40 years in AMATEUR Astronomy of mirror making, instrument making and deep space photography. CCD imaging is totally new to me. Taking photos of DSO's is old hat.
A few of us old blokes who read, not post, IceInSpace at times are rolling on the floor laughing at the some of the statements made re preccission euipment and that you can't do award winning work without spending tens of thoudsand of dollars.
Anyway enough, I am out of this thread.