I was very fortunate to purchase a used D&G 5" f/10 a few months ago and have been very happy with the views. The optics in the D&G are outstanding and really pull away from several of the Chineese refractors I have at high power. I am wondering how much difference there is between a D&G 5" and an AP 130mmf/6 on planetary/lunar viewing.
I put myself on the wait list for an AP 130 f/6 and know that I will never be sorry in getting one. I am just curious how much of an improvement it will provide over the D&G I have. I have a Baader Contrast Booster filter which acts as a minus violet filter but haven't felt the need to use it yet. I am going to try that out and think about getting a chromacorr. I have done more reading
about refractor optics and it seems spherical aberration is more important than the chromatic aberrations and that really good achromats like the D&G do a better job at limting chromatic aberrations than the Chineese refractors. That being said, the D&G is a really nice scope and I am tempted to get a 5" f/10 or f/12 just to get the upgraded AP focuser and adjustable lense cell that mine does not have.
I put myself on the wait list for an AP 130 f/6 and know that I will never be sorry in getting one. I am just curious how much of an improvement it will provide over the D&G I have. I have a Baader Contrast Booster filter which acts as a minus violet filter but haven't felt the need to use it yet. I am going to try that out and think about getting a chromacorr. I have done more reading
about refractor optics and it seems spherical aberration is more important than the chromatic aberrations and that really good achromats like the D&G do a better job at limting chromatic aberrations than the Chineese refractors. That being said, the D&G is a really nice scope and I am tempted to get a 5" f/10 or f/12 just to get the upgraded AP focuser and adjustable lense cell that mine does not have.
