|
Hi,
Since no-one has responded.
The 7mm Pentax will give you 285 mag in your scope. So it will be of no use for DSO nebulas which are better viewed in the context of their surroundings.
As far as coma is concerned, your FL is very forgiving so you may find not much difference between say a Hyperion and the Pentax. Still, the Pentax according to what I have read is a very nice contrasty eyepiece; and considering what it costs it should be.
If you wish to own a premium eyepiece then i dont think you can go wrong with a Nagler or a Pentax. I have many Naglers and even though i am now into imaging and dont use them much, still I would like to keep them as one day i may need a decent eyepiece and the ones I have are very good and will still be just as good 10 years from now.
Maybe you should say what you wish to use the eyepiece for?
Cheers
Paul
|