1.25" or 2" Ultrablock?

I am going to get an Ultrablock for my XT10 but can't figure out which to get.

I currently have a 32mm UO Konig II as my only 2" EP and do not plan to buy any other 2" EP. I do plan to get a 24mm Panoptic in the near future, which would give me a good widefield ep at 1.25" (1.3 deg in the XT10).

So, 1.25" or 2"?

Thanks,

Tom

I would vote for the 1.25 as you will find that those type filters work best at the max contrast output of the scope, and generally that is with eyepieces that give middle range mags, ie exit pupils around 3~4mm. If you don't buy any more 2" filters (ok decision) then a 2" filter would be used on only one eyepiece. With the 1.25 you have the opportunity to use/try on any 1.25 you have or borrow.

Walt (sure could go for some blue MD crabs right now!!!!)