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Celestron 52291 manual

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Table of contents for the manual

  • Page 1

    C5 Spotting Scope - #52291 Instruction Manual[...]

  • Page 2

    A spotting scop e is nothin g more than a t e les c ope that is design e d to look around the Earth. Unlik e astro nom ical telescope s, whi c h p roduce inv erted or revert e d images, spottin g scopes pr odu c e cor rect l y ori e nted i mages. Celestron o ffers several differ e nt mod e ls, each of which uses the highest quality optics to prod u[...]

  • Page 3

    Assembly This s ecti on cov ers the cor rect set up and operating p rocedures f or y our C e lestro n C5 spottin g scope and in cludes infor m ation on visu al and p hotograph ic observation s . The C5 spo tt ing scope uses a combin a tion o f m irror s and lens e s to pro d uce an imag e . Su c h an opt ica l s y st em is k nown as a compound lens[...]

  • Page 4

    The Ey e piece The eyepi ece, or ocular, is th e op ti cal ele m ent that mag nifies th e image foc used b y th e spotting scope. Th e eyepi ece fits into either the vi s u al back directl y or the erect i m ag e diagonal. To install an o c u lar: 1. Loosen th e thumbscrew o n the star di agonal (or er ec t image d iagonal) so it does no t obstruct[...]

  • Page 5

    2. Slide th e rubb e r O-rin g onto the back ( ey epi ece end) of the f inder. 3. Position the O-ring o n the main bo dy of th e finder so that it i s toward th e front (i.e., o bjec tive) end of the finder. 4. Slide th e finder, e yepiece end first, int o the front ring of the bracket. Push it back un til the O-ring is snug inside the front ring o[...]

  • Page 6

    The emblem on th e end of the fo c us knob shows the correct rotatio nal direction for focusi n g your telescope . • 6x3 0 finder • Highest u seful magnif icati on — 300x • Lowest us eful magnific at ion — 2 3x • Limiting ma gnitu de (visual) — 13 • Near Fo c us — Ap proximatel y 20' • Ang ula r field o f view with stan dar[...]

  • Page 7

    pow e r and has a 30 mm objecti ve lens. Incident a l ly, power i s alwa y s compared to the un a id ed human eye . So an 8 p ower finder magnifie s ima ges e ig ht times m o re than the hu man eye. To m ak e the align me nt p rocess a little ea sier, you should p e rform this t ask in the daytime wh en it is easi e r to l ocate obje cts in the spo[...]

  • Page 8

    To use y our C5 spotting scope visually: 1. Find a distant o bject that is f ai rl y bright. 2. Insert a low po wer eyepiece (o ne with a long foca l length — 25 to 30mm) in to the spotting scope. 3. Adjust the tripo d until the C5 i s po i nted in t he dire c ti on of the o bject you selec ted. 4. L o c ate the obj ect in y our find e r. 5. M ov[...]

  • Page 9

    betwe e n 20 to 35 power for every in c h of ape r ture wh ich is 100 t o 175 times for the C5. Determining the field o f view i s impor ta nt if y o u want to get an idea of the angular si ze o f the ob ject you are observin g. To calcul a te th e actual fi e ld of view, div ide the app a r ent field o f the e y ep iece (supp l ied by the e y e pi[...]

  • Page 10

    • When using your C5 as a telep hoto lens, th e split screen or micropris m focus e r of the 35 mm SLR c a mer a may “black out.” This is c ommon with all long fo cal length lens es. If this h a ppens, use the gro und glass portion of your focusing screen. To achieve a v ery sha rp focus, consid e r using a f ocusing magnifier. (These are rea[...]

  • Page 11

    shou ld be 60% isop ropy l alco hol and 4 0% distilled water. Or, liquid dish soap diluted w it h wat er (a couple of dr ops per one q uart of water) can b e used. Occasion a ll y , you ma y experience dew b uild-up on the corrector plate o f your C5 dur ing an observing s ession. If you w a nt to c o ntinue obs e r ving , the dew must be remov e d[...]

  • Page 12

    To verify co llimation, view a star near the ze nith. Use a medium to high power ocular — 12 mm to 6 mm fo cal length. It is imp ortant to center a star in the center of the field to jud g e collimation. Slowly cross in and out of focus and judge th e symmetry of the star. If you see a systematic s ke w ing of the star to one side, then re - coll[...]

  • Page 13

    Conv ersely , if the collimation screw g ets t oo tight, then loo se n the other two screws by the same amoun t. 7. Once th e star image is in th e cent er of th e f ield of view, check to see if t he ring s are concentr ic . If the centr a l obstruction is stil l skewed in the same di rec tion, then co ntinue turning the screw(s) in t he same dire[...]

  • Page 14

    The followi ng is a parti a l list of op tional accessori e s av a ilab le for y our Celestron C5 spo tting scope. You will find th a t additional accessories enhan ce your viewing p leasure and exp a nd t he usefulness of y our spotting scop e. Barlow L ens - A Barlow lens i s a n e gativ e lens that in c r ea ses th e focal length of a teles c op[...]

  • Page 15

    Night Visi on F lashligh t - (#935 88) - Celestron’s p remium model fo r astronom y , using two red LEDs to preserve nigh t vision bett e r than red filter s or other devices. Brightness is a djustab le. Operates on a single 9 v olt batter y (in cluded). Moon Filt er (94119 -A) - Celestron’ s Moon Filter is an economical ey epiece filter for re[...]

  • Page 16

    your C5 in to a 1250 mm telepho to lens perfect for t errestrial p hotograph y a nd shor t exposu re lunar p hotograph y . T-Ring - The T-Ring coup les your 35 mm S LR c amera bo dy to the T-Ad apter, radial gu ider, or tele-extend er. This acces sor y is mandator y if y o u want to d o pho tography thro ugh the teles cope. Each ca mera make (i. e [...]

  • Page 17

    Celestron 283 5 Columbia Street Torran ce , CA 90 503 U.S .A. Tel. (3 10) 328-95 60 Fax. (3 10) 212-5 835 Web sit e at h t tp//www. celestron. c o m Cop y r ight 200 6 Ce l estron All rig hts reserved. (Pro ducts or instruction s may change withou t notice or ob li gation. ) Item #5 2291-INST 01- 0 7 $10 .00[...]