I have 10inch GSO dob f5. I recently purchased a Pentax XW10, which is incredible compared to what came with the dob.
I looking at adding my second eyepiece. I'm thinking of a Pentax XW 20 ($390 Aud) or a Panoptic 24 ($520 Aud).
The XW10 gives me (125X, 2mm exit, 0.56 TFOV)
The XW20 would give (62.5X, 4mm exit, 1.10 TFOV)
The Pan24 would give (52X, 4.8mm exit, 1.23 TFOV)
Its 100% backyard use- Bortle 5, so i'm concerned about pupils not reaching much above 4.5mm
This would be mostly used for star clusters so i'm leaning towards XW20 slightly smaller exit pupil and slightly higher magnification for extra contrast.
Thoughts? Am I splitting hairs?
Long term I'm considering adding a 80mm - 400mm FRAC and use the above XW20 or Pan24 for wide views.
XW20 would be (20X, 4mm exit, 3.4 TFOV)
Pan24 would be (16X, 4.8mm, 3.8 TFOV)
Thankyou in advanced.