Zhumell Zenith Owner'S Manual Download | Manualshive

Page: 12 / 16

background image

12

MAGNIFICATION

To determine the magnification of a telescope and eyepiece
combinantion, divide the telescope focal length be the eye-
piece focal length.

Magnification (x) = Telescope Focal Length (mm)/Eyepiece
Focal Length (mm)

Ex: 17.5mm Eyepiece with a 60x600mm telescope.

Magnification =600mm/17.5mm

Magnification = 34.2x

FOCAL RATIO

To determine the focal ratio of a telescope, divide the focal
length of the telescope by the aperture.

Focal Ratio (f/x)= Telescope Focal Length (mm)/Aperture (mm)

Ex: Focal Ratio of a 60x600mm telescope.

Focal Ratio (f/x)= 600mm/60mm

Focal Ratio (f/x)= F/10

ASTRONOMY FORMULAE FOR YOUR

ZHUMELL ZENITH TELESCOPE

«
...
10
11
12
13
14
...
»

Summary of Contents for Zenith

Page 1: ...0 1 5 W 30 W 45 W 60 W 1 5 E 75 W OWNER S MANUAL ZENITH TELESCOPE ZHUMELL ZENITH 60X600 TELESCOPE ...

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 Zhumell customers enjoy life s pursuits hobbies and adventures in rich colorful detail the kind of detail that only high performance optics can produce At Zhumell we design our binoculars telescopes and...

Page 3: ...sope ii Adjustments 1 Caring For Your Telescope 2 Specifications 3 Parts List 4 Telescope Assembly 5 Viewing Through Your Telescope 6 The Moon 7 The Planets 8 Astronomy Formulas 9 Astronomy Terminology 10 Telescope Terminology 11 Warranty i Warnings ii Cleaning and Maintenance ...

Page 4: ...0 Telescope is built with the highest quality optics and top notch construction to provide years of reliable functionality but will require proper care If after reading this manual you still have questions about your Zhumell telescope please visit http www zhumell com for more helpful tips and contact information Our customer service representatives will be able to address any problems you encount...

Page 5: ...age Never use an eyepiece filter as a solar filter Only solar filters will completely cover the opening of the optical tube and provide proper eye protection Make sure no screws are loose before using telescope Do not drop or shake your telescope as doing so may damage the optics or harm you or the people around you CARING FOR YOUR ZHUMELL ZENITH TELESCOPE ...

Page 6: ...ir brush or blow off dust with an ear syringe can be purchased at any pharmacy Do not use a commercial photographic lens cleaner 2 Remove organic materials e g fingerprints with short gentle strokes using soft white tissue paper and a solution of three parts distilled water and one part isopropyl alcohol You may also add one drop of biodegradable dish soap to one pint of the homemade solution Do n...

Page 7: ... f 10 Eyepiece Format 1 25 Finderscope 5x24 Mount Type Tripod Base OPTICAL TUBE ASSEMBLY PARTS LIST Optical Tube Assembly OTA 5x20 Finderscope Finderscope Mounting Bracket Diagonal Prism Aluminum Tripod Accessory Tray x Barlow Lens 9mm and 17 5mm Kellner Eyepieces Carrying Pouch Lens Covers PARTS LIST FOR YOUR ZHUMELL ZENITH TELESCOPE ...

Page 8: ...e that the objective larger lens of the telescope is facing opposite the tripod adjustment arm for easy movement later 4 Locate the two screws on top of the OTA near the lower end Remove the heads of these screws and place the finderscope bracket using the corresponding holes Fasten securely with the heads 5 Slide the finderscope into the finderscope bracket with the smaller end pointing downwards...

Page 9: ...not able to distinguish the differences in color found in such dim images The lack of color is due to human anatomy not any limitations of telescope construction CHECKING AND ALIGNING YOUR FINDERSCOPE Finderscope alignment is the first step to fine tuning your Zenith telescope and viewing celestial objects Follow these steps to properly set up and align your finderscope 1 Insert the lowest power e...

Page 10: ...ronomy as Right Ascension To adjust the right ascension of your telescope loosen the thumbscrew where the telescope attaches to the tripod Gently swing your telescope left or right until it faces the object you seek Tighten the thumbscrew to hold the telescope in place The latitudinal axis up and down is commonly referred to in astronomy as Declination To adjust the declination of your telescope l...

Page 11: ...uld be familiar with the basic telescope movements and adjustments you need Next stop the planets Not all the planets are visible from one area at one time so you ll need to do a little research before you begin There are a number of online resources helpful for discovering what planets and objects should be visible in your area on any given night To find a planet you must first locate it with the...

Page 12: ...l Length mm Ex 17 5mm Eyepiece with a 60x600mm telescope Magnification 600mm 17 5mm Magnification 34 2x FOCAL RATIO To determine the focal ratio of a telescope divide the focal length of the telescope by the aperture Focal Ratio f x Telescope Focal Length mm Aperture mm Ex Focal Ratio of a 60x600mm telescope Focal Ratio f x 600mm 60mm Focal Ratio f x F 10 ASTRONOMY FORMULAE FOR YOUR ZHUMELL ZENITH...

Page 13: ...pe Limiting Magnitude 7 5 5LOG 6cm Limiting Magnitude 7 5 5 x 0 78 Limiting Magnitude 11 39 RESOLVING POWER To determine the resolving power of a telescope under ideal conditions divide the aperture into 4 56 Resolving Power 4 56 Aperture in inches Ex Resolving Power of a 60x600mm telescope Aperture in 60mm 25 4 2 36 in Resolving Power 4 56 2 36in Resolving Power 1 93 ASTRONOMY FORMULAE FOR YOUR Z...

Page 14: ... 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 zenith varies depending upon your location In general the declination point of your zenith is equal to the latitude at which you are standing on Earth EPHEMERIS The ephemeris of a planet or the sun or the moon is a table g...

Page 15: ...o called f stop provides a wider field of view Photographically the lower the f stop the shorter the exposure time needed to capture an object on film LIMITING MAGNITUDE The limiting magnitude of a telescope describes the faintest object you can see with a telescope The magnitude of a star describes its brightness The larger the magnitude of an object the fainter it appears to be The brightest sta...

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 order as quickly as possible There is a 25 surcharge associated with warranty returns to cover return shipping and handling For more information contact information and to download the Zhumell Warranty R...

Reviews:

No comments

Related manuals for Zenith

Brand: SVBONY Pages: 35

Brand: Zhumell Pages: 8

Brand: Olympus Pages: 2

NF 7 x 50 advanced

Brand: Noblex Pages: 13

ARES G2 UHD 15-45x65

Brand: Athlon Pages: 11

Brand: National Geographic Pages: 24

Diascope 65 T* FL

Brand: Victory Pages: 48

Brand: Technaxx Pages: 11

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands