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Old Nov 7, 2007, 2:40 PM   #1
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Does anyone have any experience with hooking up a Nikon D50 to a telescope (5.1" Newtonian) for astro pics? If so, can you let me know how?

Thanks.
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Old Nov 12, 2007, 8:15 AM   #2
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I haven't actually used that combination, but the basics are that to connect a dSLR to a scope you need two things:

First you need a "T" mount for the camera. "T" adapters or mounts can normally be purchased at any major camera store. What they do is replace the lens then provide a threaded portion which screws on to the telescope's 35mm camera adapter.

So the telescope must have a 35mm camera port and the camera must have the "T" adapter. If these two conditions are not met then that forces you to try to shoot through the camera's eyepiece (afocal) which works very well for small digicams such as the Nikon CP series, but doesn't work well with dSLR's.

The first thing is then to see if the telescope has a dedicated camera port. Telescopes such as the Mead ETX-90 or Celestron have such a port but terrestrial spotting scopes usually do not.

Some terrestrial spotting scopes have specialized eyepieces which connect to 35mm cameras on one side and to the scope on the other giving the combination a fixed focal length. Swarovski has such an optic which comes in either 800mm or 1100mm focal length.

Best regards,

Lin
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