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

Recent content by Grando

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    straight vs angled scope ?

    Bear in mind that with most angled scopes there is usually a facility to twist the end of the scope so that the eyepiece points out to the side of the scope. This can be useful when scanning from a car/hide, though it's not as easy to find things at that angle than it is with a straight scope in...
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    Nikon Monarch Fieldscope vs Celestron Regal M2 80ED vs Vortex Diamondback - tough choice

    I'd be tempted to buy once and buy well, and go for the Nikon...
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    Original 823 eyepiece to 883 converter

    That’s what you need, as Gzoladz74 says: a TSN-EC2 adaptor.
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    Using KOWA TSN-EX16S (1.6x) Extender with a TSN-823?

    Thanks Joachim. I now have acquired a TSN-EX16S and it works very well, at least in initial trials, with my 823. To make it work you simply unscrew the furled ring, as in your photo, and it then screws directly onto the thread surrounding the eyepiece. The EC1A adapter is then fitted onto one of...
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    Impact of TSN-EX16 on FOV?

    I think it will just be the associated loss of FOV that comes with greater magnification. So it will be proportional, I would think. So, if the FOV with the Kowa zoom eyepiece at 40x is roughly 33.87m then at 64x (40x + the 1.6 extender) I'd expect it to be 33.87/1.6 = 21.17m. (I have the TSN...
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    New March Drawing for Kowa Optics

    Doug, can we enter the draw if we’re outside the States?
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    Using KOWA TSN-EX16S (1.6x) Extender with a TSN-823?

    Thanks Joachim. Sounds promising!
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    Using KOWA TSN-EX16S (1.6x) Extender with a TSN-823?

    Thanks Joachim – that looks promising. I haven't actually got at EX16S, but wanted to check how it might work before I tried to acquire one! But good to see how you can remove the inner part to reveal a wider thread which should attach to the larger 820. Do you notice a big drop-off in quality...
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    Using KOWA TSN-EX16S (1.6x) Extender with a TSN-823?

    Has anyone tried using the 1.6 EX16S extender (the one for the 663) with an 823? According to the Kowa website it will work "in combination with a TSN-EC1A adaptor fitted onto the Kowa eyepiece (see: https://www.kowaoptic.com/media/pdf/f2/9b/b4/Kowa-System-S-A4-English.pdf). I have the adapter...
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    ‘Windscreen wipers’ for bins!

    Ok, so this is quite tongue in cheek, but the new tech in the Swarovski Visio got me thinking about other innovations that it might be good to see in binoculars. One thing that’s always bugged me is how unusable bins quickly get in heavy rain (particularly, wet objective lenses). Would some kind...
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    MHG Help

    If you like your current Trailblazers, which I assume you do as you say you’re going to keep them, then I’d be inclined to go with the 8x42s. That’ll give you two more-versatile options to take out with you in future.
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    New AX Visio 10x32 binocular

    I'm sure they'll be good for the people who want them (and have enough money to buy them). If I had money to burn I'd be tempted to buy a pair for the novelty. But £3,800 is a lot of cash I don't have for novelty value! What I would say though is that people who end up using these as they start...
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    New AX Visio 10x32 binocular

    Interestingly, prospective London black-cab taxi drivers still need to pass The Knowledge, despite the advent of sat nav.
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    New AX Visio 10x32 binocular

    In a few years you'll probably be able to buy a drone/robot with all of this technology integrated so you don't actually have to go out and look at anything anymore. It will report back to you what you could've seen had you been bothered to get up and leave the house.
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    Does Opticron SDL v3 eyepiece fit Kowa TSN-4?

    In terms of o-rings it should be pretty straightforward. Easiest will probably be a visit to a local plumbing supplies place, as they should have a box of larger o-rings and you should be able to check if they fit onto the underside of the eyepiece correctly.
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