Moon [27 Mar 07]
I recently acquired a Meade Meade #777 Off-Axis Guider for use with my Nikon D70 DSLR. Meade's marketing material for the Off-Axis Guider (OAG) is rather out of date; it states that the OAG is only for 35mm film cameras. However, it also works fine with Digital SLRs. However, as noted on the linked report, I have had some focusing problems. First the eyepiece would not focus when fully inserted; a parfocal ring solved that. Then focusing through the Nikon D70 DSLR viewfinder remained a challenge. It finally occurred to me that I should make the camera and eyepiece parfocal! And what better object to do that than the Moon. So on 16 March 2007 I set up the LXD75-8"SC and did some focusing tests with my reticle eyepiece and the D70 using the OAG. I was able to find an infocus position for both and set the parfocal ring on the eyepiece so that I could consistently achieve focus in the D70. Here is the result of the focusing test on the Moon.