Meade LX200-ACF 12 inch User Manual - Page 45

Fig. 26: Series 4000 8 - 24mm Zoom Eyepiece. Fig. 27: #140 2x Barlow Lens. Fig. 28: #905 Variable Polarizer and #1A Skylight Filter. Fig. 29: 2" Diagonal Mirror and #928 45° Erect-Image Diagonal Prism. Series 4000 8 - 24mm Zoom Eyepiece: The internal zoom optics of this eyepiece move on smooth, precisely machined surfaces which maintain optical collimation at all zoom settings. A scale graduated in 1mm units indicates the zoom focal length in operation. An excellent addition to any eyepiece set. #140 2x Barlow Lens: A 3-element design, doubles each eyepiece power while maintaining uncompromised image resolution, color correction, and contrast. Insert the #140 into the telescope's eyepiece-holder first, followed by the diagonal prism and eyepiece. The #126 2x Barlow Lens, a compact 2-element alternative to the #140, may also be employed with any LX200-ACF Series telescope. Series 4000 Photo-Visual Color Filters: Color filters significantly enhance visual and photographic image contrast of the Moon and planets. Each filter threads into the barrel of any Meade 1.25" eyepiece, and into the barrels of virtually all other eyepiece brands as well. Meade filters are available in 12 colors for lunar and planetary applications, and in Neutral Density as a lunar glare-reduction filter. Series 4000 Nebular Filters: A modern boon to the city-dwelling deep-space observer, the interference nebular filter effectively cancels out the effects of most urban light pollution, while leaving the light of deep-space nebular emissions virtually unattenuated. Meade Series 4000 Nebular Filters utilize the very latest in coating technology, and are available with threaded cells for eyepieces or for attachment to the rear cells of Meade Advanced Coma-Free Telescopes models. Zero Image-Shift Microfocuser: Now you can obtain extremely precise image focus - truly to a microscopic level - during visual and astrophotographic applications, and, during CCD applications, simultaneously maintain precise image centration on even the smallest CCD chips. Optional equipment on 8", 10", 12" and 14" LX200-ACF Advanced Coma-Free models, the Meade Zero Image-Shift Microfocuser operates at 4 speeds from extremely slow to fast; the entire microfocusing operation is actuated through the Autostar II handbox and powered from the telescope's control panel. Coarse manual focusing is effected through the telescope's manual focus knob. Variable Tele-Extender: For eyepiece-projection photography of the Moon and the planets, a Tele-Extender is required. The variable Tele-Extender threads onto the telescope's eyepiece-holder, into which is inserted an eyepiece of typically about 26mm focal length; the 35mm camera body couples to the tele-extender by means of a T-Mount. The Meade Variable Tele-Extender permits a range of projection images. Series 5000 2" Diagonal with Enhanced 99% Reflecting Coatings: The Series 5000 2" diagonal (provided as standard equipment on LX200 16" telescopes and as an option on other sizes) delivers premium performance with 99% of the light reflected to the eyepiece. This diagonal allows you to use the advanced 2" eyepieces like Meade's Series 5000 UWA and SWA for wider, sharper fields. The Series 5000 2" Diagonal comes with a 1.25" adapter for using standard sized eyepieces. Series 4000 Plössl 9mm Illuminated Reticle Eyepiece: The most advanced commercially-available illuminated reticle eyepiece, this Series 4000 Plössl 9mm model, powered by an internal battery, includes micrometric x-y positioning controls which greatly facilitate locking onto the guide star: Turn the finely-threaded controls and place the reticle's crossline pattern precisely at the desired position in the field. The sharp, high-power imaging of the 4-element, multi-coated Plössl optical system is complemented by a rubber eyecup (foldable for eyeglass wearers) that shuts out distracting stray light from the observer's eye. The upper (lens) section of the eyepiece rotates on a fine thread for precise diopter adjustment to the user's eye. Reticle pattern is a double crossline with two concentric circles. #62 T-Adapter: The T-Adapter is the basic means of prime-focus photography through all Meade Advanced Coma-Free models. Thread the T-Adapter on to the rear cell of your telescope, followed by a T-Mount for your 35mm camera, and the camera body is rigidly coupled to the telescope. #777 Off-Axis Guider: The Off-Axis Guider provides a means during long-exposure astrophotography for the photographer to monitor the tracking of the telescope to assure that the telescope remains precisely positioned on the object being photographed. Like the T-Adapter, the Off-Axis Guider couples the camera body to the telescope but it also causes a small amount of the guidestar's incoming light to be diverted at a right angle, where the star's position can be examined for tracking - 45 -