Yikes...... I am in the process of changing the old single stalk secondary out to a spider on my 6" f8 Edmund white tube.
I ordered a spider and holder from Sky Instruments (very nice by the way and $20!!). I had decided to change the mirror to a 1.1" MA after recent posts regarding that.
Question: After talking with the folks at Sky Inst. he talked about a ray trace to determine optimum secondary placement. Is there a place on the web that can walk me thru this??
He said that going to a 1.1" may not work out as the light cone may move the secondary out quite a bit and reduce focusor travel???
I obviously need to do some reading on this.
Thanks
Bruce
I ordered a spider and holder from Sky Instruments (very nice by the way and $20!!). I had decided to change the mirror to a 1.1" MA after recent posts regarding that.
Question: After talking with the folks at Sky Inst. he talked about a ray trace to determine optimum secondary placement. Is there a place on the web that can walk me thru this??
He said that going to a 1.1" may not work out as the light cone may move the secondary out quite a bit and reduce focusor travel???
I obviously need to do some reading on this.
Thanks
Bruce