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Z

enithstar

 61 

User Manual 

T

he Zenithstar 61 is designed for both daytime and nighttime viewing, as an outstand-
ing travel scope. We recommend purchasing a WO 2” star diagonal to make the most 

of these little telescopes.

Since the Zenithstar 61 is well suited to viewing nebulae, clusters, large galaxies, and 
comets, we recommend the use of high-quality wide-angle eyepieces. The WO SWAN, 
XWA, and SPL series eyepieces are available in a variety of focal lengths. Viewing the 

moon and planets is also impressive at magnifications of 120X when the seeing condi

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tions 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.
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 a 12x low pow

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er-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 astronom-
ical 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; Zenithstar 61 

has a great color correction at a fast speed of f5.9.
Please see our website for examples of photos taken with this telescope. The Accesso-
ries Chart on page 5 and page 10 provides additional details on photographic accesso-

ries for various CCD, digital and film cameras.

Never aim your telescope or finder scope at the Sun without proper Solar filters 
installed on the front of the telescope. Doing so for even a moment may perma

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nently damage your vision. Proper Solar filters consist of filters made by reputa

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ble 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.

Usage

Summary of Contents for ZENITHSTAR 61 APO

Page 1: ...ZENITHSTAR 61 APO Owner s Manual ver 1 1 2017 07...

Page 2: ...Contents Specification 3 Telescope Diagram 4 Accessories Map 5 Usage 6 Storage and Cleaning 7 Caution and Safety Optional Equipment 8 Optional Equipment 8 Recommended Accessories 9...

Page 3: ...PL 53 Doublet Air Spaced APO Fully Multi Coated SMC coating Lens Shade Retractable Focuser 50 8mm 2 R P Focuser with 1 10 Dual Speed micro focuser 75 mm Focuser Travel Length Field Stops Baffles Type...

Page 4: ...Base Bracket for Tripod 6 R P Focuser 7 10 1 Ratio Fine Knob 8 Fine Knob Protection Cover 9 Temperature Gauge 10 Two inch draw tube locking screws 11 1 25 Adapter 12 1 25 plastic cap 13 Draw Tube Ten...

Page 5: ...Zenithstar 61 User Manual Accessories Map ZENITHSTAR 61 APO Flat 61 Photo Adapter for Canon Hard Anodized Dovetail...

Page 6: ...be seen using a 12x low pow er 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...

Page 7: ...you change your cloth to a new one from time to time The above mentioned indi cations are not necessary if you carefully protect your telescope The beautiful finish of your Zenithstar 61 is not easy t...

Page 8: ...er please contact your WO Authorized Dealer right away for details on a service solution Do not disassemble or attempt repairing your telescope without a written authori zation from William Optics Cor...

Page 9: ...ccessories Finder Scope Airtight Hard Case Flattner 61 Canon Photo Adapter Finder Scope Mounting Bracket XWA 100 110 Eye Pieces 2 Rotolock Durabright Diaelectric Diagonal Hard Anodized Dovetail Avalia...

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