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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. brocknroller

    Still using your HR/5?

    So you finally got an 804 ED! Hope it wasn't the same one I bought that was falling apart mechanically. Doesn't sound like it from your description of the sweet spot, which was narrow and lopsided. I couldn't fit the two end stars in Orion's belt in the sweet spot horizontally, and they are...
  2. brocknroller

    Still using your HR/5?

    Henry doesn't speculate. I'm honored that that you're honored that I used your quote in my signature. It encapsulated my entire argument against extremist empiricism that removes the "human element" from the "equation". Today, I came upon an "oldie but goodie" aphorism, which I gave a twist...
  3. brocknroller

    Still using your HR/5?

    Ed, These were made in 1991. Green and magenta colored coatings on EPs and objectives. I also had three FMC 804s (one was the ED version). They showed improved color saturation, contrast and brightness, and more neutral color, but smaller sweet spots and more pincushion. Panning with the MC...
  4. brocknroller

    Still using your HR/5?

    Still using my MC 804 H/R5, though mostly for stargazing. The 804 Audubon has the least astigmatism of any eightish power bin I've tried. Stars are tight pinpoints and even bright stars show no flaring. The edges are also quite good for a wide field bin. Brock
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