I'm new to Cloudy Nights and I have a bunch of questions about eyepieces.
I have a Skywatcher Classic 150P (Newtonian w/Dobson mount), 153mm/1200mm (f/7.4).
The scope came with 10 & 25 mm eyepieces. I asked Skywatcher support for more info. on the eyepieces and was told "the eyepieces are a modified Kellner design with a 52 degree field of view. The factory does put coatings on them, as to the specifics we are not able to release that information."
Assuming this is correct, I calculate:
10 mm: magnif. = 48, Field of view = 1.08 deg, Exit Pupil = 3.125 mm
25 mm: magnif. = 120, Field of view = 0.43 deg, Exit Pupil = 1.25
and I have a 2x Meade Barlow.
I'm over age 70, thus I guess my eyes dilate to 5 mm. I live in Prescott, AZ with moderately light-polluted skies (can dimly see the Milky Way in summer.)
I've been considering a 32-40 mm wide-field eyepiece and a high-power EP, perhaps 6-8 mm. Although I have a 2" adapter, I'd prefer to stick with 1.25" eyepieces (Barlow & filters).
I'm tempted by the Meade Instruments 607001 Series 4000 1.25-Inch Eyepiece and Filter Set, which Amazon sells for $160. This includes eyepieces of 6mm, 8mm, 13mm, 17mm, 32mm plus Barlow and 7 filters in an aluminum case. But I've read that the shorter Plössl eyepieces have very little eye relief. Also, I cannot find details on these eyepieces -- apparently only the 32 mm is sold separately. Celestron has a similar set with a similar eye relief problem.
Perhaps better choices are for the wide-angle:
GSO 1.25" Plossl Eyepiece - 32mm, magnif. = 37.5, FoV = 1.39 deg, Exit Pupil = 4 and 20mm relief
or Meade Series 4000 32mm (similar except 26 mm relief -- is that too much?)
or Baader Planetarium 32mm Classic Ortho Eyepiece (also similar)
and for the higher power:Explore Scientific 52° 6.5mm, magnif. = 185, FoV = 0.28 deg, Exit Pupil = 0.81 deg and 15.9mm relief. (I don't use glasses.)
or Baader 1.25" Hyperion - 8mm, magnif. =150, FoV = 0.45 deg, Exit Pupil = 1mm and 20mm relief.
Thanks for any suggestions.