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At It Again
Posted: Fri Apr 14, 2023 2:06 pm
by LDW47
Even though I have almost a complete set of Morpheus eyepieces which was preceded by the Hyperions which were preceded by a set of ........, which were pr.......... I have now put together a small collection of Celestron Ultima Edge eps that I can use as an anytime comparison, a shootout between them and the Morpheus when the notion strikes me. I like their size compared to the Baaders, their performance out to the very edge, I like the comparison thought but don't get me wrong the Morpheus are still my top. Its my never ending style so here I go again, lol !
Re: At It Again
Posted: Sun Apr 16, 2023 2:12 am
by LDW47
I just added the 10mm to this group, it will be here on Tues.
Re: At It Again
Posted: Sun Apr 16, 2023 6:10 pm
by Lady Fraktor
I have not used any of these flat field eyepieces so far but I came across his comment from Don Pensack:
Bear in mind the 10mm is the odd man in the series, with only a 60° field, and isn't as well corrected as the longer focal lengths (it has fewer elements internally). I wouldn't recommend it for an f/5 scope.
Hopefully it will works well for your intended telescope.
Re: At It Again
Posted: Sun Apr 16, 2023 9:44 pm
by Bigzmey
I briefly had APM 18mm version and it was a very comfortable EP. I wish smaler FLs had better eye relief though.
Re: At It Again
Posted: Sun Apr 16, 2023 11:49 pm
by LDW47
Lady Fraktor wrote: ↑Sun Apr 16, 2023 6:10 pm
I have not used any of these flat field eyepieces so far but I came across his comment from Don Pensack:
Bear in mind the 10mm is the odd man in the series, with only a 60° field, and isn't as well corrected as the longer focal lengths (it has fewer elements internally). I wouldn't recommend it for an f/5 scope.
Hopefully it will works well for your intended telescope.
I have no fears it won't, I am not a perfectionist type of observer. 5 elements is good enough as is 60°, I owned a set of Xcel LX's which were excellent in their own right.
Re: At It Again
Posted: Sun Apr 16, 2023 11:51 pm
by LDW47
Bigzmey wrote: ↑Sun Apr 16, 2023 9:44 pm
I briefly had APM 18mm version and it was a very comfortable EP. I wish smaler FLs had better eye relief though.
I think the 10mm has a 16mm er, which is enough for me.
Re: At It Again
Posted: Tue May 23, 2023 4:06 pm
by Don Pensack
LDW47 wrote: ↑Sun Apr 16, 2023 11:51 pm
Bigzmey wrote: ↑Sun Apr 16, 2023 9:44 pm
I briefly had APM 18mm version and it was a very comfortable EP. I wish smaler FLs had better eye relief though.
I think the 10mm has a 16mm er, which is enough for me.
One additional note: the 10mm is really a 10.5mm if you are using the focal length to calculate magnification.