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

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  1. J

    Perhaps a Celestron Folder?

    Hi, scopack, mulepack or similar are warmly recommended. Joachim, who has a mulepack clone.. and loves it...
  2. J

    Perhaps a Celestron Folder?

    Hi, if the prism (or something else) vignettes with a certain EP is not determined by the afov but the tfov, which is related to the field stop diameter. and obviously the 27.2mm of the 24 ES 68 are a bit too much for the prisms - the 26mm of the 15mm Luminous might just work. Joachim
  3. J

    Perhaps a Celestron Folder?

    Hi, the standard EP for the Regal T (and M) is a 20-60 zoom which seems to be quite usable. As with all zooms with a 3 times zoom range its field of view is rather narrow at the low mag end at 20x. Some brands now offer wide angle zoom EPs where some zoom range is traded for a wider fov at the...
  4. J

    Perhaps a Celestron Folder?

    Hi, first of all, welcome to birdforum! Since Celestron mainly caters to the astronomy market, their spotters can use 1.25" astro EPs. Be warned though that while they all will fit mechanically, there might be some where the spotter will not come to focus at infinity due to fairly short focus...
  5. J

    Perhaps a Celestron Folder?

    Hi, most instruments made by celestron are indeed intended to look up, like their trademark C series Schmidt-Cassegrain reflector scopes (although there's rumours of birders using a C5), but the spotting scope lines are indeed intended for terrestial use, and the Regal line seems to be quite...
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