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Panasonic HDC-S90 Camcorder (1 Viewer)
- Thread starter Sandpiper
- Start date
Sandpiper
Mike Powell
I can now answer my own question after purchasing the above camcorder.
Due to the zoom characteristics of the lens severe vignetting is present when using it on my Swarovski ATS80HD scope with 20-60x eyepiece and DCA making it unusable for videoscoping.
With the same scope and EagleEye 12x Digiscoping Eyepiece vignetting is still a major problem but I am able to obtain a vignetting-free image at just below maximum optical zoom on the camcorder. However, the very high magnification makes it unsuitable for all but extreme range videoscoping in a calm, distortion-free environment. In other words, very rarely!
Mike
Due to the zoom characteristics of the lens severe vignetting is present when using it on my Swarovski ATS80HD scope with 20-60x eyepiece and DCA making it unusable for videoscoping.
With the same scope and EagleEye 12x Digiscoping Eyepiece vignetting is still a major problem but I am able to obtain a vignetting-free image at just below maximum optical zoom on the camcorder. However, the very high magnification makes it unsuitable for all but extreme range videoscoping in a calm, distortion-free environment. In other words, very rarely!
Mike
Hi Mike,
Sorry to hear that your camcorder is unusable for videscoping. But I suggest to find a way to shorten the distance between camcorder's front glass and eyepieces outer glass. This may be a pinhole add on lens or screw out the outer plastic part of camcorder glass or eyepiece. One unusual idea that you can try: add a wide angle add on between eyepiece and camcorder's lens. But you have to add it reverse, I mean the back lens of wide angle add on should kiss the eyepiece glass. This will change the optical costruction of the system (and exit pupil of telescope so that wigetting may gone depending on the wide angle add on that you use). Good luck.
Murat Ozcelik
Sorry to hear that your camcorder is unusable for videscoping. But I suggest to find a way to shorten the distance between camcorder's front glass and eyepieces outer glass. This may be a pinhole add on lens or screw out the outer plastic part of camcorder glass or eyepiece. One unusual idea that you can try: add a wide angle add on between eyepiece and camcorder's lens. But you have to add it reverse, I mean the back lens of wide angle add on should kiss the eyepiece glass. This will change the optical costruction of the system (and exit pupil of telescope so that wigetting may gone depending on the wide angle add on that you use). Good luck.
Murat Ozcelik
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