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Item # CELE187
Celestron Deluxe Photographic Tele-Extender
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Celestron Deluxe Photographic Tele-Extender
Celestron Deluxe Photographic Tele-Extender

Celestron Deluxe Photographic Tele-Extender

Unavailable
$000
Product Overview
Specifications
  • For Schmidt-Cassegrain use only
  • Allows you to attach camera to telescope with an eyepiece installed inside Tele-Extender
  • For Eyepiece Projection photography
  • Used for high-power lunar, solar or planetary photography
  • Must be used with T-Ring for your appropriate camera

Product Information

Overview

  • For Schmidt-Cassegrain use only
  • Allows you to attach camera to telescope with an eyepiece installed inside Tele-Extender
  • For Eyepiece Projection photography
  • Used for high-power lunar, solar or planetary photography
  • Must be used with T-Ring for your appropriate camera

Description


Celestron's deluxe tele-extender is a high-power photographic accessory for Schmidt-Cassegrain telescopes. It's a hollow tube that allows you to attach a camera to your telescope with an eyepiece installed. By using the Deluxe Tele-Extender in combination with an eyepiece, you can increase your telescope's effective focal length to well over 10,000mm! And with this comes a corresponding increase in image size.


It's a technique known as eyepiece projection photography, and it multiplies magnification by the distance from eyepiece center to the film plane, according to the following formula:
Effective Focal Length = Telescope focal length ? Eyepiece focal length X DF (distance to film).


The deluxe tele-extender is used for high-power lunar, solar and planetary photography as well as for extreme terrestrial photography. To employ the tele-extender, remove the diagonal from your telescope and insert an eyepiece directly into the visual back. Place the Tele-Extender over both the eyepiece and the visual back and attach your 35mm SLR camera to the back of the tele-extender, using a T-ring. That puts you in business for fine, highly magnified astrophotography!


Note: The image you'll see through your camera's viewfinder will be upside-down. And, because of the extremely high magnifying effect afforded by the deluxe tele-extended, you'll want to take extra care to prevent camera and telescope vibration. Accurate polar alignment and using only under good seeing conditions will also help you capture high-quality images.


The deluxe tele-extender is only for Schmidt-Cassegrain telescopes!


CHOKING HAZARD - small parts may pose a risk to children under 6 yrs.

Technical Details

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