Orion ED80T CF User's Manual
Contents
1. Figure 1 Once this thumbscrew is loosened the entire backend of the focuser including any 1 25 diagor nal and eyepiece ihat may be attached comes otf exposing tha 2 ameter focuser dramube Now insert your 2 diagonal into the drawtube and secure with the wo thumbscrew 100s ned previously Insert a 2 eyepiece inio the diagonal secure itin place withthe thumbscrew on the diagonal and youre ready to observe About the 2 Dual Speed Crayford Focuser The Triplet 80mm comes equipped with a 2 dual speed Crayford focuser The Crayford design allows for smooth precise focusing without the image shift that rack and pnion designs experience There is also a fine adjustment capabilty on this focuser oven tums ofthe smal knob protruding from the right focus knob equals one turn ofthe coarse adjustment knob Once you have acioved the bast possible focus cn an abject using the coarse adjustment knob you can fine tune your focus Using this slow motion knob to make micro adjustments This Wil allow delicate adjustments to be made to get the sharpest images possible you find thatthe focus adjustment is too hard to tur or does not hald in place property once youve achieved focus you can make adjustments to the focuser tension by using ihe f user tension thumbscrew located on the bottom ofthe opt al tube between the focus wheels Make adjustments to this humbeceew unti the focuser motion teels smooth to tum and holds in pl2. 00 676 1343 Day or Evening
3. INSTRUCTION MANUAL Orion ED8OT CF Apochromatic Refractor Congratulations on your purchase of an Orion 80mm 1 6 Triplet Retractor Your telescope has been designed with high quality precision optics and excellent mechanical construction The dual speed 11 1 Crayford focuser will make getting sharp images a breeze and reduce image shift to almost zero The three element 16 objective lens offers excellent color correction These instructions will help you set up and use your optical tube Getting Started Tho Bomm Triplet comas fuly assembled rom the factory The talescopes optics have been assembled and collimated at the factory so you should not have to make any adjustments io them Please keep th original shipping box In the unlikely event You need fo ship the telescope back to Orion tor warranty par service you shouid use the original packaging The box also makes a very good container for storing the talascope When itis not in use Optical Use The fine optics and precision machining make the aomm Triplat an excellent choice for astronomical and terrestrial observation You wil need to attach the 2 diagonal fncudedl and optional eyepiece to the back end of the telescope The telescope wil accapt2 or 1 25 accessories Simply sika the diagonal into the open end of tha telescope and insert the eyepiece inio the diagonal and it is ready to show you the Visual beauty of the night sky For terrestrial observation
4. a correct image agonal is recom mended These are typically avalatie as 1 25 accessories ony Use of Optional Eyepieces Diagonal and Finder Scope Tho 8Omm Tplt does not come with a finder scope or eye piecas in order to grant tne user fe greatest versatilty in cus omizng the instrument to suit their needs However certain Tulas for using accessories sil appi Any Orion finder scope with a dovetail bracket can be used ith BOmm Triplat Simply unread the thumbscrew on the oveta mount and in scopes that do not use a dovetail bracket wil need to be tached by other means Tho BOmm Tiplet can uso 1 25 and 2 accessories Please note that the telescope wil not come to focus without the use fa diagonal or extension tube To instali a 1 28 diagonal Luntread tne thumbscrew on the 1 28 adapter untl itis Push With the interior of the adaptar Insert the agonal or exten on tube and secure it with the thumbscrew Then insert the eyepiece into the diagonal or extension tube and secure it an te thumbscrow Use of 2 Eyepieces and Diagonals Afeahge of the 8Omm Tle ss ably to also use 2 barral diameter eyepieces and diagonais At low magnifications 2 yapieces can give a wider feid of view than standard 1 25 yepieces This is especially desirable for observing deep sy objects as many of them appear quite large but ant To use 2 syepices simply loosen the large thumbscrew on the 2 adaptar
5. ace when you have obtained fecus It may be nec essary to make adjustments when the weight of your acoes sores change significant Photography with the 80mm Triplet The Triplet aomm t retractor makes a very capable astro graph for your CCD or DSLR camera Wih an optional cam Sra adaptor the Triplet 80mm becomes a 480mm 18 tale Photo lens for a single lans reflex camara For long distanca terrastrial or astronomical photography you need a Fring for Your particular camera model and a camera adapter A 2 prime focus camera adapter is suggested to obtain ihe best focal distance for that optical tube Simply attach the Ting to the camera body and thread the 2 prime focus camer adapter into the Fring Insert the barrel of the camera adaptor inta the 2 eyepiece Polder on the focuser Use the camera s Viewfinder io frame the picture Use he telescopes focuser to focus the image Tighten the focuser tension thumbscrew to make sure the camera does not slip out ot focus Most CCD cameras will have a 1 25 or 2 barrel ready to attach doc to your telescope ika an eyepiece or diagonal No adapter is required simply insert the barrel of the CCD camera into the 1 25 or 2 eyepiece holder and secura the camera wih the siver thumbscrew lock The Triplet 80mm Retractors were designed to reach focus with both DSLR and CCD cameras However every car focus point is a itie diferent Depending on your camera you may need to use an extension
6. il bar into the receiving dovetail cradle on the mount and tighton the mounts atachment lacking crews Calculating Magnification Power Its desiable to have a range of ayepleces of diferent focal lengths to alow viewing over a range of magnifications To calculate the magnification or power of a telescope simply vie the focal length of the telescope by the focal length of the eyepiece Telescope Focal Length mm Eyepiece Focal Length mm For example the BOmm which has a focal length of 480mm usad in combination with a 25mm eyepiece yields a power of Magnification B si Every telescope has a useful imit of power of about 50x per inch of apertura Claims of higher power by some telescope manufacturers are a misleading advertising gimmick and should be dismissed Keep in mind that at higher powers an image wil aways be dimmer and less sharp his s a funda mantal law of optics The steadiness of the air he seeing Wil irit how much magnifcation an image can tolerate Always start viewing with your lowest power longest focal length eyepiece in the telescope After you have located and looked at ihe abject with it you can iry swilching to a higher Power eyepiece to farrat out more detail if atmospheric con tions permit I the image you see is not crisp and steady reduce the magnification by switching 1o a longer ocalength eyepiece As a general rule a smal but wellrasoved image Wi show more deal and pro
7. matc triplat air spaced somm Al airto giass surtacas coated with at least one aurtace muti coated Focallength 480mm Focal ratio 6 Batting Internal bates in tube and focuser Foeuser 2 dual speed Crayford with 1 25 adapter Tube diameter not including dow shield gomm ube lengh wth dew shield retracted 14 25 Weight bs One Year Limited Warranty The Orion 80mm 16 Triplet Refractor is warranted against defects in materials or workmanship for a pariod of one year from the date of purchase This warranty is for the benefit of the original retail pur chaser only During this warranty period Orion Telescopes amp Binoculars wil repair or replace at Orion s option any warranted instrument that proves to be detective provided It is returned postage paid to Orion Warranty Repair 89 Hangar Way Watsonville CA 95076 Proof of purchase such as a copy of the original receipt is required This warranty does not apply if in Orion s judgment the instrument has been abused mishandled or modified nor does it apply to normal wear and tear This warranty gives you specific legal rights and you may also have other rights which vary from state to state For further warranty service information con tact Orion Customer Service 800 676 1343 support telescope com Orion Telescopes amp Binoculars OrionTelescopes com 89 Hangar Way Watsonville CA 95078 Customer Support Help Line 8
8. tube for your particular imag Ing setup Any imaging accessory such as a cokor fitar wheel increases the amount of ward focus travel required Balore attaching any extra imaging accessory try reaching focus frst ith the camera directly attached tothe focuser then see i You have enough focus traval left ior extra accessories Imaging equipment is sometimes heavier than a diagonal and eyepiece The dua speed Crayford focuser is capable ot handing the weight of your CCD or DSLR camera Adding tension to the focuser drawtube wil increase the amount ot Weight the focuser can handie Install your camera onto the 2 or 1 25 adapter on the focuser during the day Check the focuser tor any ippage If the focuser dramtube sides under the weight of the camera you wil need to add more tension to the focuser You may want to consider using a remote shutter release instead ofthe shutter release on the camera Touching the camara can vibrate the system and blur the resulting photo raphe image Also be sure to use a solid Yipod Attaching the Bomm Triplet 1 6 to a Tripod or Mount The Tilt Bomm can be attached to a pod or mount by the use of the pre installed 1 4 20 mounting Bock The 14 20 shaft ot a sturdy camera tripod wil thread into the hal on the mounting block onthe underside of the optical tube Figure 1 The tripod mounting biock is also a dovetail bar designed to attach to any Orion mount Simply insert the doveta
9. vide a mare enjoyable view than a dim and fuzzy overmagni ed image Care amp Maintenance Give your telescope reasonable cara and t will last a ietme _ When notin use Keep ts dust cover on as well as the dust cap on the eyepiece opening Store it indoors or in a dry garage Do not lave the telescope outside except when using it The optical tube is carbon fiber underneath protective surtace Mat should resist scratches and smudges Ifa scratch does appear on the tube it wil not harm the telescope Smudges on the tube can be wiped off wi standard household clean ars such as Windex or Formula 400 Any quaity optical lens tissue and cleaning fuid speciticaly designed for multi coated optics can be used to clean the tslescope s objective lens as well as the lenses of the eye pieces and finder scope Never use regular glass cleaner ar Cleaning fuid designed for eyeglasses Before cleaning wih fuid and tissue however blow any loose particles off the lens with a biewer bub ar compressed air or ighiiy brush the lens wi a soft camel hair brush Apply some cleaning flid to a tissue never directly on the opis Wipe the lens gently in a cicular motion then remove any excess fuid with a fresh lane tissue Oty fingerprints and smudges may be removed using his method Use caution rubbing too hard may scratch the lens Clean oniy a small area at a time using a fresh lens issue on each area Never reuse tesues Apochro
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