That seems like a deal, but Im not sure. This allowed me to rack the focuser further out, I wanted to see if the focuser racked in with the diagonal was cutting into the light path. Explore Scientific AR127 opinions? Explore Scientific AR127 127 mm f/6.5 Air-Spaced Doublet Does a fpl51 ed refractor have a greater edge over the ES AR127? A 4 inch f/7 will probably not resolve as much as a 3" apochromat owing to secondary colour. The Explore Scientific AR127 Air-Spaced Doublet is a classic air-spaced, crown-and-flint, doublet achromatic refractor, reborn with the aim to produce superior-class optical figure in a short (f/6.5) focal length design. It has a focal length of 826mm and weighs in at 15.6lb. It was, but just marginally. The Meade gives you a bit more magnification and a better finder mount, the ES gives you a wider view and a dual speed crayford focuser. Fast achromats (say faster than f8 at 100mm) lose detail on planets, the moon. Both seem like good scopes. But suddenly I see someone in my areas selling on craigslist an AR127 and CG4 mount together for $600. - posted in Refractors : Ive been looking to get my first telescope after spending a lot of time with my 15x70 binocs, and have been largely thinking about a 127 or 150 Mak (I have a small car). Once bit we are faced with a decision of whether we pick up an amazingly priced achromat like the Explore Scientific AR127 that we are looking at today of a ED/APO scope costing 2-∞ times more. It depends on what you want. Bereits ab 632,49 € Große Shopvielfalt Testberichte & Meinungen | Jetzt Bresser EXPLORE SCIENTIFIC AR127 Air-Spaced Doublet Astronomisches Fernrohr günstig kaufen bei idealo.de I then used an extension tube and no diagonal. The AR127 is a 5” doublet achromatic refractor that has a fast f/6.5 design. Der Explore Scientific Großfeldachromat ist standardmäßig bereits mit einem hochwertigen Fokussierer mit Untersetzung, Klemmung und Klemmringen, sowie mit einem 99% reflektierenden dielektrischen Zenitspiegel mit 2" Durchmesser und einem 8x50 Sucherfernrohr ausgestattet. Explore Scientific AR127 review by Allan Hall. Explore Scientific AR 127 f/6.5 - measured at 119 mm with 2" Explore Scientific diagonal and 2" to 1.25" adapter and 12 mm eyepiece.