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Two eyepieces are not enough unless you are allowed a barlow.
Max field - 31mm nagler or 24mm panoptic (for 1.25" format)
Medium/high power dso viewing - 10mm Pentax XW
What makes sense is to choose the best of whats available for the exit pupil size that suits your scope.
Lowest power - 5 to 6mm exit pupil.
Medium power - 2 to 3 mm exit pupil for general dso viewing.
high power - 0.5 to 1mm for small scopes, limited by seeing conditions.
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