Mike - did it matter if it was 1.25" or 2"? Otherwise as you say the moon is only 0.5 degrees. I think you get about 1 degree TFOV with a 1.25" and 1.8 degrees with a 2" TFOV maximum (for your 12 " f5 beast). (Which unless you buy a super expensive wide angle you will never use as the exit pupil will be enormous!).
Anyway Why not just get a better quality plossl of the same size, or - maybe a meade 4000QX 26mm?
cheers
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