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

Recent content by engineer

  1. E

    I finally did it!

    Update: My 7x42 Zeiss are everything that Zeiss fans have claimed they would be. When I have time, I'll write a review of them.
  2. E

    I finally did it!

    After much studying, pondering and seeking advice, I finally bought my new binoculars. I bought a new Zeiss 7x42 T*P* Classic for $670 with the Zeiss lifetime warranty (authorized Zeiss dealer), shipping and insurance. Thanks for everyone's input.
  3. E

    informal binocular test

    I agree with everything that you said. Since the binoculars didn't belong to me, and the store was kind enough to keep pulling out bino's for me to examine, I was limited in my test. My knowledge of optics is confined to visible, infra-red and X-ray lithography from a micromanufacturing...
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    informal binocular test

    engineer: 3) I have good eyesight, but I could discern only a slight difference between the 42's. Likewise, I could discern only a slight difference between the 32's(30's). The total effect. What I was trying to convey was that no flaw or characteristic of one binocular stood out to me...
  5. E

    informal binocular test

    A store where I am a regular customer has a large binocular display. I looked through several bino's at a package in a dark corner of the store, approximately 100ft/30m away. The package was covered in various sized print. I compared 8x32(30): Zeiss FL, Swaro SLC, Kahles, and Zeiss Conquest...
  6. E

    Nitrogen versus Argon

    It steadies the binoculars. ;)
  7. E

    Nitrogen versus Argon

    Nitrogen has an atomic number of 7, whereas argon has an atomic number of 18. Hence, argon is larger as John said. Larger molecules don't leak as easily as do smaller molecules. Another issue is that argon is much, much less likely to react than nitrogen with other elements. This would make...
  8. E

    Read any good books lately?

    Thanks, Henry, I ordered it this morning from University Optics.
  9. E

    Read any good books lately?

    Seyfried is the "big man in the book store". Caty, I've ordered Peter Dunne's book, too. It set me back $1.30 for a new copy.
  10. E

    Read any good books lately?

    I found Henry Paul's book (1980 edition) online in Very Good condition. I paid a whopping 89 cents for it.
  11. E

    Read any good books lately?

    Henry, I ordered one of those books this morning, one of the other books was $147. I've been reading online and did find something that seems to fulfill my curiousity. This may be of interest: http://www.astronomy.co.nz/pub/TelescopeFundamentals.asp
  12. E

    My way of saying, "Thanks!"

    Most of my posts in the Binoculars forum have been to ask questions of others. I want to thank those who so patiently answer my questions and the best way that I could think of was with a photo that I took. Unfortunately, I had to crop it a lot to upload it. engineer
  13. E

    Read any good books lately?

    While I have been striving to choose ne binoculars, I've realized that I enjoying learning about binoculars. It must be a "left brain" sort of thing that afflicts engineers. I was wondering what books about binoculars and their terms you would recommend. Specifically, I would like to learn...
  14. E

    reasonably wonderful binoculars

    Arthur, In your experience, which is brighter and displays more resolution in twilight, a premium 8x32 or a medium priced 8x42?
  15. E

    reasonably wonderful binoculars

    I read up on dielectric mirror tech. Now I better understand what you wrote.
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