Mint AP Astro-Physics 155 EDT Last Chance
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This scope is mint. I prefer pick up, and will offer a reduced price if someone who buys the scope will pick it up. BUT, I will ship at buyer's expense. You won't find a nicer one in all probability. Comes with scope, rings, losmandy plate and case. If you have serious interest, and have questions, or need more pics, let me know.
If you are interested, you should reply to get a communication going.
This ad is going to come down in a few hours or at best tomorrow morning. Anyone who has looked through one of these scopes knows what I am talking about. You can see articles that the longer f/9 focal ratio yields even tighter, virtually flawless seondary color correction across the "visual" spectrum compared to the F/7, easier focusing (snaps into focus over a wider adjustment), Binoviewer friendliness, rarity, contrast with very black sky background (narrower more focused exit pupil), more forgiving with eyepieces (light cone is more narrow), more magnification with the longer focal length, and the F/9 curvature of the lens makes it slightly more tolerant to thermal swings. Both the AP F/9 and F/7 are great scopes. I believe the F/9 EDT is the king of visual planetary viewing and does extremely well with videos of the planets and stacking the images. That's just my opinion and i am not an expert, but I have looked through a lot of scopes.
Rick
If you are interested, you should reply to get a communication going.
This ad is going to come down in a few hours or at best tomorrow morning. Anyone who has looked through one of these scopes knows what I am talking about. You can see articles that the longer f/9 focal ratio yields even tighter, virtually flawless seondary color correction across the "visual" spectrum compared to the F/7, easier focusing (snaps into focus over a wider adjustment), Binoviewer friendliness, rarity, contrast with very black sky background (narrower more focused exit pupil), more forgiving with eyepieces (light cone is more narrow), more magnification with the longer focal length, and the F/9 curvature of the lens makes it slightly more tolerant to thermal swings. Both the AP F/9 and F/7 are great scopes. I believe the F/9 EDT is the king of visual planetary viewing and does extremely well with videos of the planets and stacking the images. That's just my opinion and i am not an expert, but I have looked through a lot of scopes.
Rick
