background image

8

TERRESTRIAL AND ASTRONOMICAL VIEWING

Your Zhumell binoculars are equipped for both large-magnification 
terrestrial viewing and astronomical viewing purposes. Although 
they are light enough to hold in your hand, we recommend 
these binoculars be mounted to a tripod for best results. At high 
magnification, even the smallest movement of the binoculars 
results in a large jolt to the view.

To use your binoculars for land-based viewing, mount to a tripod 
and point the binoculars at the object you’d like to see. Adjust the 
focus knobs to bring the object into clear view.

To use your binoculars for astronomical viewing, read the following 
guide to achieve viewing success. 

SELECTING A VIEWING SITE

The ideal site for using your binoculars for astronomical viewing 
is in the middle of nowhere. Most users don’t have access to the 
darkest of skies, however, so select a site that is both far from light 
pollution and practical for travel. Avoid street lights, yard lighting, 
rooftops, and chimneys, and never observe through an open 
window indoors. Be sure your site is out-of-town or very dark and 
has clear view of a large portion of the sky.

Summary of Contents for Tachyon 25x100

Page 1: ...0 1 5 W 30 W 45 W 60 W 1 5 E 75 W OWNER S MANUAL ASTRONOMICAL BINOCULARS ZHUMELL TACHYON 25X100 ASTRONOMY BINOCULARS...

Page 2: ...ell you get field tested precision crafted optics at the best possible value So even if you re just starting out as an amateur birder or astronomer you don t have to settle for entry level products Zh...

Page 3: ...wing 4 Astronomical Observation Tips 5 Cool Views 6 Astronomy Terminology 7 Warranty i Tripod Mounting ii Interpupillary Distance iii Center and Diopter Focus i Selecting a Viewing Site ii Seeing and...

Page 4: ...ty but will require proper care If after reading this manual you still have questions about your Zhumell binoculars please visit http www zhumell com for more helpful tips and contact information Our...

Page 5: ...cleaning binocular lenses use included lens cloth or other soft lint free cloth Use lens cleaner or diluted isopropyl alcohol to remove dirt and smudges other chemicals may damage your equipment Alwa...

Page 6: ...the settings for easy adjustment in the future To get the most from your Zhumell astronomical binoculars be sure to understand and properly use these features Doing so will lead to the most satisfyin...

Page 7: ...e a distant or astronomical object on which to focus 2 Close your left eye or cover the left objective lens and turn the right diopter until the object is in perfect focus 3 Close your right eye or co...

Page 8: ...binoculars at the object you d like to see Adjust the focus knobs to bring the object into clear view To use your binoculars for astronomical viewing read the following guide to achieve viewing succes...

Page 9: ...look at bright stars about 40 above the horizon If the stars appear to twinkle there is significant atmospheric distortion and viewing at high magnification will not be ideal If these stars are steadi...

Page 10: ...ts are best ASTRONOMICAL OBSERVATION TIPS TRACKING CELESTIAL OBJECTS The Earth is always rotating about its polar axis completing one full rotation every 24 hours This is what defines our day and we s...

Page 11: ...ng its partial phases when shadows fall on the craters and canyon walls to give them definition Even though the full moon may look like a tempting target the light is too bright and the definition too...

Page 12: ...ly enough you can see the Cassini division a thin dark gap in the rings You can also often make out one or more of Saturns moons including the largest Titan VENUS At its brightest Venus is the most lu...

Page 13: ...ions your binoculars are well equipped to gather the light necessary to view these objects but you will need to find a viewing site well away from light pollution and give your eyes plenty of time to...

Page 14: ...ghtest and most beautiful deep sky objects first catalogued about 200 years ago by French astronomer Charles Messier Using your star chart determine in which constellation your object lies and locate...

Page 15: ...al equator The vernal equinox is where right ascension is at 0h hours The autumnal equinox can be found at 12h R A ZENITH The zenith is the point in the celestial sphere directly above your head The z...

Page 16: ...ranty To obtain warranty service the damaged equipment must be returned to Zhumell Our Customer Care associates will be happy to assist you in completing this return to get your Zhumell in working ord...

Reviews: