Hello,
I am looking for a good 3"(75-90mm aperture), I am searching definition, contrast and sharpness in the visual image, not search CA, I am visual observer and like double star,planetary and wide field.
what is best for this, a fluorite doublet, maybe a triplet ED...?
Thanks,
Paulo
I am looking for a good 3"(75-90mm aperture), I am searching definition, contrast and sharpness in the visual image, not search CA, I am visual observer and like double star,planetary and wide field.
what is best for this, a fluorite doublet, maybe a triplet ED...?
Thanks,
Paulo