Click here for more information and to buy from eBay.
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 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 Deluxe 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 (larger eyepieces may not fit the inner diameter of the
Tele-Extender), and connects to the visual back of the telescope. Optional
counterweights will be necessary to properly balance the telescope when using
the 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 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 Tele-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.
Bid from 50P for a great bargain!
Please also visit my ebay shop at https://stores.ebay.co.uk/Joys-Optics for more great products!
Delivery: The lens will be posted to you the same day by Royal Mail First Class Post when your payment is received before 13:00 O’clock. Otherwise, it will be posted the next day. Please note that all payment received over the weekend will be posted the following Monday. International Buyers please see postage details.
Buy from a UK PowerSeller with more than 30,000 happy customers and buy with TOTAL confidence!
Category: Cameras and Photography:Telescopes and Binoculars:Telescopes
Location: Guildford
Click here for more information and to buy from eBay. If the item is no longer available see below for similar items.
See more from eBay…
Items 1 to 6 of 214681
Steens for kids: Steens For Kids Stars And Telescope Tent For High Sleeper
£35.99 from Robert Dyas
Create a magical and adventurous bedroom for your child with our material tent, designed to fit perfectly under their St…more
Steens for kids: Steens For Kids Stars And Telescope Tunnel
£36.99 from Robert Dyas
Transform your child`s bedroom into a playful and adventurous space with our material tunnel, designed to fit perfectly…more
Prime Supply: Mini High-Definition Monocular Telescope
£7.99 from Go Groopie
Take this Mini High-Definition Monocular Telescope everywhere with you Provides high-definition clarity so you can o…more
Celestron: Celestron 21038 telescope Refractor 118x Black
£94.87 from Quzo UK
– All coated glass optical elements for clear crisp images;N/A- Erect image diagonal so that your views are correctly or…more
Celestron: Celestron 22010-CGL telescope Refractor 900x Black
£60.83 from Quzo UK
If you're looking for a dual-purpose telescope appropriate for both terrestrial and celestial viewing then the Astro…more
Celestron: CELESTRON Astromaster 130EQ Reflector Telescope – Black, Black
£299 from Currys
Top features:- Setting circles for locating and tracking sky objects – Slow motion controls for increased precision – Tw…more
Items 1 to 6 of 214681