|
Hi Bab5!
Im an old C102 owner too (I believe made by vixen). Came on a SP mount.
In relation to your question about achromats you can perhaps get away with things with a good achromat and filters. But they are not perfect. The filters of choice I think is between the contrast booster or the UHCS. If mainly from suburbia maybe go the UHCS. For an ED refractor adding the semi-apo filter is probably sufficient (although probably you might not even bother).
I own both a semi-apo and UHCS. The semi apo is definitely better for visual but I havent tried it photographically yet. It does let some blue fringing through visually (I think the UHCS may therefore be better).
The images you have taken look great with not too much chromatic abberation.
|