I have just tried w/o success to bring to focus this combination:
Orion by Vixen ED114 f5.3
aftermarket Joe Cartolano 2" adapter on the end of the Vixen tube
Vernonscope 2" diagonal
no name 2"->1.25" adapter (the lip is ca 8mm, but the adapter is right for this setup as I >just< clear the mirror with the end of the Siebert 1.6x OCA, which sits on the original bino tube)
Burgess C bino with 20mm EPs
I lack some more infocus with glasses on or even more with glasses off (I am myopic i.e. need more intravel)
Generally, my setup looks like pics 5 and 6 here
http://www.siebertoptics.com/SV1.6.html
Of note, I can't screw the OCA directly into the body (for use with a 1.25" diagonal) of the bino as the threads are different. I seem to recall some talk about this problem. The thread on the end of the OCA seems to be removable, held by two set screws.
Plus, my 1.25" diagonal has plastic body, I would not trust it the weight of the setup. I like the stability of using the 2" mirror.
Thanks for your suggestions. I suspect it might be a peculiarity of the short f.l. Vixen.
David
Orion by Vixen ED114 f5.3
aftermarket Joe Cartolano 2" adapter on the end of the Vixen tube
Vernonscope 2" diagonal
no name 2"->1.25" adapter (the lip is ca 8mm, but the adapter is right for this setup as I >just< clear the mirror with the end of the Siebert 1.6x OCA, which sits on the original bino tube)
Burgess C bino with 20mm EPs
I lack some more infocus with glasses on or even more with glasses off (I am myopic i.e. need more intravel)
Generally, my setup looks like pics 5 and 6 here
http://www.siebertoptics.com/SV1.6.html
Of note, I can't screw the OCA directly into the body (for use with a 1.25" diagonal) of the bino as the threads are different. I seem to recall some talk about this problem. The thread on the end of the OCA seems to be removable, held by two set screws.
Plus, my 1.25" diagonal has plastic body, I would not trust it the weight of the setup. I like the stability of using the 2" mirror.
Thanks for your suggestions. I suspect it might be a peculiarity of the short f.l. Vixen.
David