prime focus long-exposure astrophotography. It makes guiding easier and exposures shorter.
Sky Maps (#93722) - When learning the night sky, the Celestron Sky Maps offer the ideal solution. The maps include all the constellations and brighter deep-sky objects. The maps are printed on a heavy stock paper that is moisture-resistant. On the front cover is a rotating planisphere which indicates when specific constellations are visible.
Skylight Filter (#93621) - The Skylight Filter is used on Celestron Schmidt- Cassegrain telescopes as a dust seal. The filter threads onto the rear cell of your telescope. All other accessories, both visual and photographic, thread onto the Skylight Filter. Although it does cut down on a portion of the incom- ing light, it is a very small amount. It should be noted, that most Barlow lenses can NOT be inserted into the visual back when the skylight filter is attached.
T-Adapter(#93633-A)- A T-Adapter (with T-Ring) allows you to attach your camera to the prime focus of a Celestron Schmidt-Cassegrain telescope. This is used for terrestrial photography and short exposure lunar and filtered solar photography. It can be used for long exposure deep-sky photography if you use a separate guidescope.
T-C Adapter (#93636) - This adapter allows you to couple a video or movie camera to a telescope. The camera must have a removable lens with a standard “C” thread. The T-C adapter threads into the camera and then onto the T-Adapter.
T-Ring- The T-Ring couples your camera body to the T-Adapter, Radial Guider Body, or Tele-Extender. This accessory is mandatory if you want to do astro- photography through the telescope. Each camera make (i.e., Minolta, Nikon, etc.) has its own unique mount and therefore, its own T-Ring.
Tele-Extender, Deluxe (#93643) - The tele-extender is a hollow tube that allows you to attach a camera to the telescope when the eyepiece is installed. This accessory is used for eyepiece projection photography which allows you to capture very high power views of the Sun, Moon, and planets on film. The tele-extender fits over the eyepiece onto the visual back and works with eyepieces that have large housings, like the Celestron Ultima series.
A full description of all Celestron accessories can be found in the Celestron Accessory Catalog (#93685).