52 replies to this topic

[Sarkikos]

If you need the eye relief.

If you don't, the 7mm APM XWA is excellent as well.

I don't need the eye relief, though I can appreciate the extra comfort.  But I've never tried a 7mm APM XWA.  A 6 or 8mm Ethos would be a good choice for a 100 degree eyepiece - I have them - but neither is 7mm.

 

Mike

Edited by Sarkikos, Yesterday, 08:03 PM.

[Starman1]

My comment was in reference to 7mm. A 6mm Ethos is a simply superb eyepiece in every way.

I thought so when I owned all the Ethos, and I was pleased to see Ernest's test indicated the same.

Seriously, thought, the 7mm and 9mm XWAs are excellent eyepieces.

If you like higher powers, I could see alternating Ethos and XWAs for 9mm, 8mm, 7mm, and 6mm

[wxcloud]

Would an ethos even make sense for bortle 8 skies? I'm guessing with an f/4.7 dob I'd likely need to spring for the paracorr also.

In terms of eye relief I have the eyecup extended all the way out on the Pentax 7 xw and it seems pretty comfortable. I think the eye relief is listed at 20mm and I do tend to put my eye on the eyepiece.

Wish the skies would clear so I can get more testing in with the Penny. So far however, it seems good.