www.william-optics.com William Optics Corp. ZenithStar 66 WILLIAM OPTICS USA Crafting the Earth's Finest Astronomical Instruments INSTRUCTION MANUAL CONTACT US WILLIAM OPTICS USA Toll Free: +1-866-918-6888 (For USA only) Tel: +1-714-898-7989 Fax: +1-714-892-6067 web: www.william-optics.com e-mail: wo@william-optics.com Crafting the Earth's Finest Astronomical Instruments Thank you for choosing a William Optics ZENITHSTAR 66 high-quality short tube refractor. This simple step-by-step instruction manual is designed to provide Zenithstar owners with a better understanding of how to operate their new telescope by providing precise, updated information. These instructions will also guide you through how to properly maintain the Zenithstar, and how to operate it at its maximum capabilities. Please carefully familiarize yourself with your telescope's parts and functions before operating it for the first time. CONTENTS Getting to know your telescope ZenithStar 66 SD Doublet APO Specifications ZenithStar 66 Triplet ED APO Specifications ZenithStar 66 Petzval ED Semi-APO Specifications ZenithStar 66 Accessories Chart 01 02 03 04 05 06 07 08 09 10 11 11 12 13-16 www.william-optics.com WARNING! DO NOT USE THIS TELESCOPE UNDER ANY CIRCUMSTANCES TO DIRECTLY VIEW THE SUN. It could easily cause instant blindness or serious damage to your eyes. To view the sun, use only appropriately designed solar filters that will reject 99.96% of the sun light and heat. Educate your family on how to use this telescope properly during day and night time observations. For further information please contact your local dealer. Connection Instructions ( SCT Diagonal Mirror ) Connection Instructions ( Red Dot Finder ) Connection Instructions ( Aligning Red Dot Finfer ) Usage Storage and Cleaning Caution and Safety Bundle Equipment Optional Equipment Recommended for This Scope Crafting the Earth's Finest Astronomical Instruments Getting to know your telescope ZenithStar 66 SD Doublet APO Specifications Aperture Focal Ratio Focal Length 66 mm F / 5.9 388 mm (15.3") SD Doublet, Air Spaced, Fully Multi-Coated, STM coating 1.78" 10.8 Retractable 40.6 mm (1.6") Crayford Focuser with 1:10 dual-speed microfocuser 63 mm (2.4") Focuser Travel Length 360 o Rotatable Design Dew shield cover Objective Type Resolving Power Limiting Magnitude www.william-optics.com Retractable dew shield Lens Shade Extend Focuser main tube Connection point for tripod 360o rotatable focuser lock screw L Bracket 1.25" Adapter L- type Mount Field Stops Tube Diameter lock screw for focuser drawtube Brass Compression Ring L Bracket Based 10 Baffles 75 mm (2.95") 300 mm (11.8") Fully Retracted 360 mm (14.2") Fully Extended 3.5 lbs. (1.7 kg) Aluminium Case (Standard) 38.5 cm x 24.5 cm x 16.5 cm (15" x 9.6" x 6.5") (Water Resistant) 3.7 mm (1.6") P02 Tube Length Tube Weight Case Case Dimensions (WxHxD) Case Weight 1:10 fine focus knob 1.25" adapter lock screw 1.25" adapter P01 ZenithStar 66 Triplet ED APO Specifications Aperture Focal Ratio Focal Length Objective Type Resolving Power Limiting Magnitude Lens Shade 66 mm F/7 460 mm (18.1") Triplet ED APO Design Fully Multi-Coated 1.78" 10.8 Retractable 40.6 mm (1.6") Crayford Focuser with 1:10 dual-speed microfocuser Focuser 61 mm (2.4") Focuser Travel Length 360 1.25" Adapter L- type Mount Field Stops Dew Shield O.D. Tube Diameter Tube Length o ZenithStar 66 Petzval ED Semi- APO Specifications Aperture Focal Ratio Focal Length Objective Type Resolving Power Limiting Magnitude Lens Shade 66 mm F / 6.1 400 mm (15.7") 4-Element Design Fully Multi-Coated 1.78" 10.8 Retractable 40.6 mm (1.6") Crayford Focuser with 1:10 dual-speed microfocuser Focuser 61 mm (2.4") Focuser Travel Length 360 o Rotatable Design 1.25" Adapter L- type Mount Field Stops Dew Shield O.D. Tube Diameter Tube Length Tube Weight Case Case Dimensions (WxHxD) Brass Compression Ring L Bracket Based 10 Baffles 85 mm (3.3") 75 mm (2.95") 345 mm1 (3.6") Fully Retracted 410 mm (16.1") Fully Extended 3.7 lbs. (1.7 kg) Stylish carrying bag 38.5 cm x 24.5 cm x 11.5 cm (15" x 9.6" x 4.5") (Water Resistant) P04 Rotatable Design Brass Compression Ring L Bracket Based 10 Baffles 85 mm (3.3") 75 mm (2.95") 345 mm (13.6") Fully Retracted 410 mm (16.1") Fully Extended 3.7 lbs. (1.7 kg) Stylish carrying bag 38.5 cm x 24.5 cm x 11.5 cm (15" x 9.6" x 4.5") (Water Resistant) Tube Weight Case Case Dimensions (WxHxD) P03 ZenithStar 66 Accessories Chart Step-1 Red Dot Finder (R.D.F.) Connection Instructions (2" SCT Diagonal & Optional SCT Adapter plus Standard 2" Diagonal) Quick-Release Bracket Extend the tube fully and connect the scope via the L-base bracket or mounting rings. SLR / DSLR Camera CCD Adapter Remove the 1.25" adapter to mount a WO SCT Diagonal or extender. Step-2 www.william-optics.com 2" Diagonal Mirror DCL 52 Digital Video Make sure that the diagonal is tightly secured before operating. Holding the diagonal steady in position with one hand, turn the SCT ring on the SCT thread of the ZS 66. 2" SCT/ZS66 Adapter 2" Diagonal Mirror 2" Eyepiece DCL 4337 Stylish Carrying Bag (Water Resistant) EZTouch 2" 45 Erecting Prism Digital Camera (Canon,CASIO, SONY,OLYMPUS) Step-3 1.25" 45 Erecting Prism (2" Barrel) Violet Reducer Filter(VR) DCL 28 NIKON Digital Camera An OPTIONAL SCT extender/adapter allows you to use 2" accessories on your ZS66. Replace the 1.25" adapter with the extender. This extender/adapter allows you to expand the connectivity capabilities of your ZenithStar. 1.25" 45 Erecting Prism Tripod SCT Diagonal 2" to1.25" adapter Step-4 1.25" Eyepiece Equatorial Mount 2" Eyepiece Insert a standard diagonal in the SCT extender/adapter and lock the thumbscrew properly. Insert your favorite eyepiece and lock the thumbscrew. If you are using a 1.25" eyepiece, make sure that both the diagonal 2" screw and 1.25" adapter screws are properly locked. P05 Above diagram is only for future connectivity purposes. Please contact our Authorized Dealers for accessories purchase. P06 Crafting the Earth's Finest Astronomical Instruments Connection Instructions ( Red Dot Finder ) Connection Instructions ( Aligning R.D.F. ) Step-1 Take out the finderscope screw from the drawtube top with a small flat screwdriver. This is the larger black screw at the left of the rotation lock thumbscrew. We suggest positioning the RDF base with the thumbscrew facing towards the left (for clarity purposes it's shown on the right hand side on these instructions). Finderscope Screw R.D.F Base Step-1 Step-2 Insert the quick release red-dot finder bracket in the base. R.D.F. View Field of Red Dot Finder. (with WO Erecting Illuminated Red Dot Finder) Find a distant object in the telescope with a low power eyepiece. Step-2 Use a 2mm Allen key to loosen the setscrew on the left side of the RDF, near the bracket under the letter "R". Using a 2.5 mm Allen key make adjustments to the Alt-Az adjustments (marked R and UP) until the red dot in the reticule overlays the same object as the center of the eyepiece view. Step-3 Lock the bracket thumbscrew properly and follow alignment instructions. Note that this is an optional product available for purchase from WO. Base Lock Screw Brightness Adjustment Step-3 Using a high magnification eyepiece (short focal length) repeat this procedure for fine alignment. Alignment Setcrews Reticule Selector View Field of Telescope. (with WO Dielectric) P07 P08 Crafting the Earth's Finest Astronomical Instruments The alignment of the finder needs to be performed only when necessary. We recommend aligning during daytime by point telescope and finder at the same far object. www.william-optics.com Usage The Zenithstar series is designed to work with SCT-thread Diagonals, for both daytime and nighttime viewing, as an outstanding travel scope. We recommend purchasing a WO 2" star diagonal to make the most of these little telescopes. Some 1.25" diagonals may require an additional extender. William Optics markets an optional 2" SCT extender/adapter, as shown in the connection instructions. Because the Zenithstar 66 are well suited to viewing nebulae, clusters, large galaxies and comets, we recommend the use of high quality wide-angle eyepieces. The WO SWAN and UWAN series eyepieces are available in a variety of focal lengths. Viewing the moon and planets is also impressive at magnifications of 120X when seeing conditions permit. To calculate the magnification of your telescope and eyepiece combination, divide the telescope focal length in mm by the eyepiece focal length in mm. Focuser Tension Adjustment Screw Drawtube Lock Thumb Screw 2.5 mm Allen key All WO telescopes, including ZenithStar, are now fitted with a smooth and precise dual speed 1:10 focusing system. 1:10 means that for every ten full rotations of the small fine-focus knob the large knob rotates once. The focuser drawtube tension can be adjusted using a 1.5mm Allen key on the screw protruding from the black hollow ring. Tension should be adjusted only when necessary by progressively tightening the screw until you reach the desired tension. Make sure that the black ring is always tight against the focuser. Keep in mind that the atmosphere plays an important role in seeing conditions, and only the best seeing conditions will support high power viewing. Additional power under less than ideal seeing conditions will not result in an increase in viewable details, and lower powered eyepieces should there be used under those conditions. It's easiest to locate objects using low power eyepieces (20X magnification) and then zoom in by switching to higher powered eyepieces. The largest field of view will be seen using a12X low power-wide field of view eyepiece. A stable tripod or mount is recommended for optimal viewing. This includes high quality photography tripods, and German Equatorial mounts, which are designed for astronomical use and include precise tracking of celestial objects. Optional accessories from WO include mounting rings and plates, super high quality 2" Quartz star diagonals which provide for superior viewing and high quality images. The Zenithstar telescopes are suitable for large-field astrophotography; the Petzval version features a very flat and well corrected field of view, the SD version has great color correction at a fast speed of f/5.9, whereas the triplet version has an excellent color correction. Please see our website for examples of photos taken with these telescopes. The Accessories Chart on page 05 provides additional details on photographic accessories for various CCD, digital and film cameras. Never aim your telescope or finderscope at the Sun without proper Solar filters installed on the front of the telescope. Doing so for even a moment may permanently damage your vision. Proper Solar filters consist of a filters made by reputable manufacturers, designed to fit tightly over the front of the dew shield. Solar eyepiece filters are not considered safe, and should not be used. With proper front mounted Solar filters, the telescope will not be harmed by viewing the Sun. Contact your Authorized WO Dealer for further information on the brands, sizes, and prices of proper solar filters. Storage and Cleaning We suggest placing all accessories inside an airtight container with desiccative control. Secondly, remember to store the telescope in a non-humid environment, never leave it in a hot heated environment. If not properly stored, it may develop mildew growth and other preventable build up. Be particularly careful after a night observation that the lens has no dew on it before storing the telescope away. In case the lens surface becomes dusty, smeared, or gets fingerprints or fungus build-up on it, first of all, remove any surface particle by using an air blower, then carefully proceed to wiping the lens gently with a lint-free proper soft cloth. Use a lens liquid cleaner to get the best cleaning result. Make sure you change your cloth to a new one from time to time. The above-mentioned indications are not necessary if you carefully protect your telescope. The beautiful anodizine of your ZenithStar 66 is not easy to ruin. Nonetheless take care of the exterior body tube by wiping it down with a slightly damp soft cloth from time to time. Water should be enough to do the job. Please do not use any organic solvent on your telescope, for example alcohol, benzene and other hazardous chemical as this might ruin it. P10 P09 Crafting the Earth's Finest Astronomical Instruments www.william-optics.com Caution for Safety Caution! Never directly view the sun light with your telescope. Do not aim your ZenithStar 66 at the Sun because this might impair your Loss of eyesight can occur when your telescope is not properly protected by solar viewing filter. (Solar filters can be easily purchased through your WO Authorized Dealers). Always place the optical telescope assembly (OTA) on a completel ...