Celestron 52291 Скачать руководство пользователя страница 14 | Manualshive

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Celestron 52291 Скачать руководство пользователя страница 14

The following is a partial list of optional accessories available for your Celestron
C5 spotting scope. You will find that additional accessories enhance your
viewing pleasure and expand the usefulness of your spotting scope.

Barlow Lens - A Barlow lens is a negative lens that increases the focal length of
a telescope. Used with any eyepiece, it doubles the magnification of that
eyepiece. Celestron offers two Barlow lens in the 1-1/4" size for the C5. The 2x
Ultima Barlow (#93506) is a compact triplet design that is fully multicoated for
maximum light transmission and parfocal when used with the Ultima eyepieces.
Model #93507 is a compact achromatic Barlow lens that is under three inches
long and weighs only 4 oz. It works very well with all Celestron eyepieces.

CD-ROM (93700) - Celestron and Software Bisque have joined together to
present this comprehensive CD-ROM called The Sky™ Level 1 - from Celestron.
It features a 10,000 object database, 75 color images, horizontal projection,
custom sky chart printing, zoom capability and more!  A fun, useful and
educational product.  PC format.

Eyepieces - Like telescopes, eyepieces come in a variety of designs.  Each design
has its own advantages and disadvantages.  For the 1-1/4" barrel diameter there
are four different eyepiece designs available.

•

OMNI Plöss

l

-

Plössl eyepieces have a 4-element lens designed for low-to-high

power observing.   The  Plössls offer razor sharp views  across the  entire field, even at
the  edges!    In  the  1-1/4"  barrel  diameter,  they  are  available  in  the  following  focal
lengths:  4mm, 6mm, 9mm, 12.5mm, 15mm, 20mm,
25mm, 32mm and 40mm.

•

X-Cel -

This 6 element design allows each X-Cel

Eyepiece  to  have  20mm  of  eye  relief,  55°  field  of
view  and  more  than  25mm  of  lens  aperture  (even
with  the  2.3mm).  In  order  to  maintain  razor  sharp,
color  corrected  images  across  its  55°  field  of  view,
extra-low dispersion glass is used for the most highly
curved  optical  elements.  The  excellent  refractive
properties of these high grade optical elements, make
the  X-Cel  line  especially  well  suited  for  high
magnification planetary  viewing where sharp,  color-
free  views    are  most  appreciated.    X-Cel  eyepiece
come  in  the  following  focal  lengths:  2.3mm,  5mm,
8mm, 10mm, 12.5mm, 18mm, 21mm, 25mm.

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Содержание 52291

Страница 1: ...C5 Spotting Scope 52291 Instruction Manual ...

Страница 2: ...ing scope to project an image of the Sun onto any surface Internal heat build up can damage your spotting scope and or any accessories attached to it Never use an eyepiece solar filter or a Herschel wedge Internal heat build up inside your spotting scope can cause these devices to crack or break allowing unfiltered sunlight to pass through to the eye Never leave your spotting scope unsupervised ei...

Страница 3: ... Photo Tripod Adapter block Nylon Water Resistant Case Lens Cap The Erect Image Diagonal The diagonal is a prism that diverts the light at a right angle from the light path of the spotting scope The C5 spotting scope comes with an erect image diagonal that is designed for terrestrial viewing To attach the diagonal 1 Turn the thumbscrew on the visual back until its tip no longer extends into i e ob...

Страница 4: ...l length i e the larger the number the lower the eyepiece power or magnification and the shorter the focal length i e the smaller the number the higher the magnification Generally you will use low to moderate power when viewing For more information on how to determine power see the section on Calculating Magnification Barrel diameter is the diameter of the barrel that slides into the diagonal or v...

Страница 5: ...ripod adapter block that has three 1 4x20 holes To attach the C5 to a photographic tripod 1 Place any of the 1 4x20 holes in the photo tripod adapter block over the 1 4x20 screw on your photographic tripod 2 Tighten the 1 4x20 screw to hold the C5 firmly in place If the telescope spotting scope is not properly balanced try using one of the other holes in the photo tripod adapter block Once mounted...

Страница 6: ... focusing knob until the image is sharp If the knob will not turn the primary mirror has reached the end of its travel on the focusing mechanism Turn the knob in the opposite direction until the image is sharp Once an image is in focus turn the knob clockwise to focus on a closer object and counterclockwise for a more distant object A single turn of the focusing knob moves the primary mirror only ...

Страница 7: ...ject that is in excess of one mile away This will eliminate any possible parallax effect 2 Point your spotting scope at the object you selected and center it in the main optics of the spotting scope 3 Check the finder to see where your alignment target is located in the field of view 4 Adjust the screws on the finder bracket tightening one while loosening another until the cross hairs are centered...

Страница 8: ...lestron C5 spotting scope just by changing the eyepiece ocular To determine the magnification of your Celestron C5 simply divide the focal length of the spotting scope by the focal length of the eyepiece used In equation format the formula looks like this Focal Length of Spotting Scope mm Magnification Focal Length of Eyepiece mm Let s say for example that you are using a 26mm eyepiece To determin...

Страница 9: ...th our example multiplying the angular field 1 04 by 52 5 produces a linear field width of 54 6 feet at a distance of one thousand yards The apparent field of each eyepiece that Celestron manufactures is found in the Celestron Accessory Catalog 93685 When working with any optical instrument there are a few things to remember to ensure you get the best possible image Never look through window glass...

Страница 10: ...tions of a second To reduce vibration when tripping the shutter use a cable release Releasing the shutter manually can cause vibration something that produces blurred photos A cable release allows you to keep your hands clear of the camera and spotting scope thus reducing the possibility of shaking the spotting scope Mechanical shutter releases can be used though air type releases are MAINTENANC W...

Страница 11: ... a Celestron Lens Shade Dew Cap or by pointing the spotting scope at the ground until the dew has evaporated If moisture condenses on the inside of the corrector place the spotting scope in a dust free environment and point it down Remove the accessories from the rear cell of the spotting scope to allow the moisture to evaporate from the optical tube To minimize the need to clean your spotting sco...

Страница 12: ...edge until its shadow is seen closest to the narrowest portion of the rings i e the same direction in which the central shadow is skewed 3 Locate the collimation screw closest to where your finger is positioned This will be the collimation screw you will need to adjust first If your finger is positioned exactly between two of the collimation screws then you will need to adjust the screw opposite w...

Страница 13: ...livers the optimal optical performance specifications that your telescope is built to achieve If seeing i e air steadiness is turbulent collimation is difficult to judge Wait until a better night if it is turbulent or aim to a steadier part of the sky A steadier part of the sky is judged by steady versus twinkling stars NOTE THE ADJUSTMENT SCREWS ON THE SECONDARY MIRROR ARE VERY SENSITIVE USUALLY ...

Страница 14: ...inting zoom capability and more A fun useful and educational product PC format Eyepieces Like telescopes eyepieces come in a variety of designs Each design has its own advantages and disadvantages For the 1 1 4 barrel diameter there are four different eyepiece designs available OMNI Plössl Plössl eyepieces have a 4 element lens designed for low to high power observing The Plössls offer razor sharp...

Страница 15: ...s all the way across the field when used visually When used photographically there is some vignetting that produces a 26mm circular image on the processed film Sky Map 93722 Celestron Sky Maps are the ideal teaching guide for learning the night sky You wouldn t set off on a road trip without a road map and you don t need to try to navigate the night sky without a map either Even if you already kno...

Страница 16: ...a make i e Minolta Nikon Pentax etc has its own unique mount and therefore its own T Ring Celestron has 8 different models for 35mm cameras Vibration Suppression Pads 93503 These pads rest between the ground and tripod feet They reduce the amplitude and vibration time of your telescope when shaken by the wind or an accidental bump This accessory is a must for long exposure prime focus photography ...

Страница 17: ... Torrance CA 90503 U S A Tel 310 328 9560 Fax 310 212 5835 Web site at http www celestron com Copyright 2006 Celestron All rights reserved Products or instructions may change without notice or obligation Item 52291 INST 01 07 10 00 ...

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