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

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    Example with a 90mm Maksutov-Cassegrain type scope

    Another example using the Celestron C90 Mak. My practice pigeons were cooperating today. Taken using the Coolpix 995 and an 18mm Scopetronix eyepiece (archaic equipment I know). Distance was around 75 feet at a 35mm equivalent of around 3985 mm according to Jay's digiscoping calculator...
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    Example with a 90mm Maksutov-Cassegrain type scope

    Different scopes have different ways of focusing. The Celestron has a focus ring around the lens like a regular camera lens. The Meade ETX-90 has a small knob you turn on the back of the scope for focusing. That one is pretty awkward to focus and shoot at the same time.
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    Example with a 90mm Maksutov-Cassegrain type scope

    If you attach a DSLR the same way we do with refractors (without camera lens) then the image is right side up just the same as our refractors.
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    Example with a 90mm Maksutov-Cassegrain type scope

    Here is another example of using a small mak scope for bird photography. This one was taken using a Celestron C90, 1000mm f11 mak scope. I am getting slightly better results using afocal digiscoping with this one with an old coolpix 995 and an 18mm scopetronix eyepiece. This is way more...
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    Example with a 90mm Maksutov-Cassegrain type scope

    Thanks for the link, Paul. I had not seen this one. I have enough trouble hiking around with the Celestron 80ED or the ETX-90...can't imagine lugging that thing around! I purchased my Meade ETX-90 years ago on sale new for $399, at a time when you couldn't touch a short-tube ED refractor for...
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    Example with a 90mm Maksutov-Cassegrain type scope

    Thanks for posting that link Jason. I've watched this fellows posts using a variety of Mak-Cass type scopes for years. He has some impressive images. As several people have pointed out these scopes have limitations. When I first started digiscoping, I was using lower-end spotters that were...
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    Example with a 90mm Maksutov-Cassegrain type scope

    Always trade-offs to consider. I'm mostly putting this up because we occasionally have individuals asking about getting into bird photography with a very limited budget. Even with the donuts, I would rather have some nice CA free, sharp images (remember that pigeon is completely unprocessed)...
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    Example with a 90mm Maksutov-Cassegrain type scope

    Thanks for that explanation Phil. I had never even heard of a Mak-Newt.
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    Example with a 90mm Maksutov-Cassegrain type scope

    One of the major advantages of these scopes is the fact that they use polished mirrors to form the image instead of glass. This means there is practically zero CA, even with the cheapest scopes. These are also known as "mirror lenses". The image to my eye is not as high quality (contrast and...
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    Example with a 90mm Maksutov-Cassegrain type scope

    Yes, I would say that is a good estimate.
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    Example with a 90mm Maksutov-Cassegrain type scope

    While things are a little slow (everyone playing with Christmas toys), I thought I would post another example of a photo taken with one of the small, relatively inexpensive Maksutov-Cassegrain type reflecting spotting scope/telescope. I was playing with my old Meade ETX-90 scope yesterday and...
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