Celestron Ultima and Antares W70 EP's

I'm looking for opinions of the Antares W70 short f/l EP's (5.8mm and 8.6mm)in comparison to the 7.5mm Celestron Ultima's for use in an f/6.3 refractor and an f/10 SCT.

John in NEOhio

John,
I have the 8.6mm antares eyepiece and I am pleased with it's performance on DSOs and on Saturn. However, there may be quality control issues on the antares widefield line, as reported in posts in this forum. The problem appears to be with the coatings in that some have a green, apparantly ineffective coating while others have the more common blue coating which effectively reduces reflections and ghosting of images. I think the ultima line generally has a high level of quality control although the AFOV will be significantly less than the antares widefield design. If you do decide on the antares eyepiece, I would recommend contacting Jim at Scopestuff and ask him for the blue-coated units. Scopestuff is also an Astromart sponsor and includes shipping on their items. You may also consider the antares line of high quality plossls that apppear to be identical to the ultrascopic line and are sold by scopestuff and other dealers.