Celestron Deluxe Tele-Extender

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Celestron Deluxe Tele-Extender
Item # CE-93643
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  • The Celestron Deluxe Tele-Extender was designed for Schmidt-Cassegrain telescopes.
  • Allows you to attach a camera to your telescope with an eyepiece installed.
  • The Celestron Deluxe Tele-Extender has a built-in safety device to prevent your eyepiece from becoming accidentally dislodged.
  • The maximum diameter of the widest part of your eyepiece should be 1.5 inches or less to properly fit in the Celestron Tele-Extender.
  • Make sure you have a T-ring that will fit your camera brand in order to use this accessory.


Celestron Deluxe Tele-Extender

The Deluxe Tele-Extender for Schmidt-Cassegrain telescopes is a hollow tube that allows you to attach a camera to your telescope, with an eyepiece installed. By using the Celestron Deluxe Tele-Extender in combination with an eyepiece, you can increase your instrument�s effective focal length to well over 10,000mm! And this corresponds with a matching increase in image size. This technique is known as eyepiece projection photography. The following formula can be used to determine approximate effective focal length:

EFL = Telescope focal length/Eyepiece focal length x DF (the distance from the center of the eyepiece to the film).

The CelestronDeluxe Tele-Extender is used for high-power lunar, solar and planetary photography as well as for extreme terrestrial photography. It fits over the telescope's eyepiece (even large eyepieces such as those in Celestron's Ultima line), and connects to the visual back of the telescope. Optional counterweights will be necessary to properly balance the telescope when using the Celestron Tele-Extender.

To use the Deluxe Tele-Extender, remove the diagonal from your telescope and insert an eyepiece directly into the visual back. Place the Celestron Tele-Extender over both the eyepiece and the visual back, then attach your 35mm SLR camera to the back of the Tele-Extender, using a T-Ring. The CelestronTele-Extender's built-in safety device will help prevent your eyepiece from becoming accidentally dislodged.

There are a few things to keep in mind when using this accessory. First, the image you'll see through your camera's viewfinder will be upside-down. Secondly, due to the extremely high magnifying effect afforded by this accessory, extra care to prevent camera and telescope vibration, accurate polar alignment and use under good seeing conditions will all assist you in capturing high quality images.

Celestron Product Number: 93643
Additional Information

Additional Information

SKU CE-93643
UPC Code 050234936439
Manufacturer Celestron
Barrel Size 1.25"
Warranty 2 Year Warranty
Included Items

Included Items

  • Celestron Deluxe Tele-Extender
  • Celestron Accessories One Year Limited Warranty
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