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

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  1. E

    Is 8x32 or 8x42 the best Birding format?

    The STEREO coronagraph cross section is shown in this paper...
  2. E

    Is 8x32 or 8x42 the best Birding format?

    Maybe this new stuff NASA is using might help suppress stray light more directly: http://www.nasa.gov/content/goddard/nasa-ultra-black-nano-coating-to-be-applied-to-3-d-new-solar-coronagraph/ It seems to be just the ticket for the job.
  3. E

    Is 8x32 or 8x42 the best Birding format?

    Very plausible and quite helpful in understanding why short fat binoculars are harder to make.
  4. E

    Is 8x32 or 8x42 the best Birding format?

    Am mortified by my mistake. My sincerest apologies to Chosun, long may she flourish and contribute.
  5. E

    Is 8x32 or 8x42 the best Birding format?

    Hi Jerry, Am thinking maybe Chosun disagrees strongly with the premise of this thread and is highlighting his disagreement, in a polite way. o:D No need to cast aspersions on some innocent squid.
  6. E

    Is 8x32 or 8x42 the best Birding format?

    Why not just shrink an 8x42 to a more handy size? A shorter design could offer both the extra eye placement flexibility inherent in the larger exit pupil as well as the easier carry prized by others. Of course a shorter design would require a faster, more expensive optical train, but low cost...
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