 | Celestron Telescope Tele-Extender-Deluxe 93643 |
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Celestron Telescopes Deluxe
Tele-Extender #93643 for Schmidt-Cassegrain
telescopes is 
a hollow tube that allows you to attach a camera to
your telescope, with an eyepiece installed.
By using Celestron
Tele-Extender-Deluxe 93643 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)
Telescope Deluxe Tele-Extender-93643
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 Tele-Extender- Deluxe. To use the
Deluxe Tele-Extender, remove the diagonal from your telescope
and insert an eyepiece directly into the visual back. Celestron
Telescope 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. Celestron Tele-Extender's built-in safety device will help prevent your eyepiece from
becoming accidentally dislodged.
Features of Celestorn Telescope TeleExtender - Deluxe:
- Allows you to attach a camera to your telescope, with an eyepiece installed
- You can increase effective focal length to well over 10,000mm
- Can be used for high-power lunar, solar and planetary photography as well as for extreme terrestrial photography
Package Contents:
- Celestorn Telescope Tele-Extender Deluxe
| Celestron Telescope Tele-Extender-Deluxe 93643 | 93643 |
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