Orion ED80T User's Manual
Contents
1. 4 2 Eyepiece 80 0 lt tl at 1 25 p Eyepiece adapter Figure 3 Rotatable focuser Finder Scope Compatibility The included finder scope dovetail base on the ED80T CF is ready to accept any Orion finder scope Figure 1 1 The ED102T CF does not include a finder scope dovetail base however it is available optionally from Orion and directly fits the holes in the ED102T CF Figure 3 To insert a finder scope onto your ED T CF refractor slide the finder scope bracket into the finder scope dovetail base and secure it in place by tightening the thumbscrew s on the dovetail base Operating the ED T CF Refractor Now that you have become familiar with the different features and functions of your ED T CF refractor you are ready to begin using your new telescope outside under a starry night The EDT CF refractors are essentially ready to begin observ ing with immediately There is a small period of time where the internal temperature of the telescope must match the outside temperature to obtain the best image quality This only takes a few minutes Typically the ED T CF will have reached outside temperature by the time the telescope is setup Connecting the ED80T CF Tripod or Telescope Mount The ED80T CF has a built in mounting block ready to connect to a sturdy camera tripod or telescope mount Figure 1 1 The mounting block is threaded to accept a common 1 4 20 stud found on almost any camera tripod T2. If a scratch appears on the tube it will not harm the telescope Smudges on the tube can be wiped off with standard house hold cleaners Dew When you are ready to pack up your telescope at the end of the night avoid immediately storing it if you encountered heavy dew and the telescope is damp Instead bring the telescope inside and allow the moisture on the telescope to evaporate If dew forms on the objective lens then leave the dust cover off of the telescope until all the moisture has evap orated Once the telescope has completely dried out place it back in storage Cleaning Optical Surfaces In general your telescope will only need to be cleaned on a very minimal basis Dust particles on the objective lens do not effect the optical quality of your ED T CF Loose dust can sim ply be blown off with air using a compressed air can or blower bulb available from Orion Any remaining dust is best left alone unless the build up is extreme Finger prints and water marks should be cleaned from your telescope s objective lens Any quality optical lens tissue and cleaning fluid spe cifically designed for multi coated optics can be used to clean the telescope s objective lens as well as the lenses of your eyepieces and finder scope Never use regular glass cleaner or cleaning fluid designed for eyeglasses Before cleaning with fluid and tissue however blow any loose particles off the lens with a blower bulb or compressed air or
3. 5 Baffling 3 knife edge black painted steel baffles Mounting Dovetail plate Weight 5 4 kg 11 8 Ibs Length 62 9cm 24 8 with dew shield retracted One Year Limited Warranty The Orion ED80T CF and Orion ED102T CF Triplet Apochromatic Refractors are warranted against defects in materials or workmanship for a period of one year from the date of purchase This warranty is for the benefit of the original retail purchaser only During this warranty period Orion Telescopes amp Binoculars will repair or replace at Orion s option any warranted instrument that proves to be defective 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 95076 Customer Support Help Line 800 676 1343 Day or Evening 2011 Orion Telescopes amp Binoculars
4. been reversed reattach the two socket head screws Connecting the ED102T CF to a Telescope Mount The ED102T CF refractor includes a preinstalled pair of tube rings and a dovetail mounting plate ready to attach to a heavy duty telescope mount The dovetail plate is compatible with many Orion telescope mounts The dovetail plate is also compatible with many other available mounts To connect the ED102T CF to a mount loosen the attachment screw s on the mount s dovetail holder until the screw s provide enough clearance for the dovetail mounting plate Carefully place the dovetail plate flat against the top surface of the dovetail holder of the mount and tighten the attachment screw s securely Balancing the ED102T CF can be achieved by sliding the dovetail mounting plate forward or backward within the mount s dovetail holder You can also move the telescope for ward or backward within the tube rings The tube rings offer the most adjustment range Loosen the tube ring clamps slightly and slide the telescope tube forward or backward as needed to reach optimum balance then retighten the tube ring clamps Using Different Eyepieces The EDT CF refractors work well with virtually any 1 25 or 2 eyepiece Because the EDT CF refractors implement high quality ED optics the eyepieces you use should also have excellent fully multi coated optics to utilize the full perfor mance of the telescope It is desirable to have a range of eyep
5. INSTRUCTION MANUAL Orion ED Triplet Carbon Fiber Apochromatic Refractors ED80T CF 9534 ED102T CF 9530 Providing Exceptional Consumer Optical Products Since 1975 OrionTelescopes com Customer Support 800 676 1343 E mail support telescope com Corporate Offices 831 763 7000 89 Hangar Way Watsonville CA 95076 2011 Orion Telescopes amp Binoculars IN 427 Rev A 08 11 Dovetail base for finder Dew shield lock Focuser thumbscrew rotation lock not shown thumbscrew Dew shield retracted 2 Accessory thumbscrew _ _ gt Fine focus knob _ gt Course focus knob Focuser lock thumbscrew 1 4 20 Mounting block Figure 1 1 The 80mm ED80T CF Apochromatic Refractor optical tube Focuser rotation 2 Accessor y lock thumbscrew Tube rings thumbscrew Dew shield lock thumbscrew Dew shield retracted Course focus knob Mounting plate Figure 1 2 The 102mm ED80T CF Apochromatic Refractor optical tube Congratulations on your purchase of an Orion ED Triplet Carbon Fiber Refractor 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 objective lens offers excellent color correction These instructions will help you set up and use y
6. densation from forming on the lens during cold and humid nights The dew shield is also useful for reduc ing glare under unwanted outside lights To extend the dew shield remove the optical tube dust cover by unthreading it counter clockwise then loosen the dew shield lock thumb screw Pull the dew shield outward until it stops and retighten the dew shield lock thumbscrew Dual Speed Crayford Focuser The ED T CF refractors come equipped with dual speed Crayford focuser 2 for the ED80T CF and 3 for the ED102CF The Crayford design allows for smooth precise focusing without the image shift that rack and pinion designs experience For quick focusing of your ED T CF refractor the two larger silver focus knobs will provide a coarse focus For more pre cise focusing as needed for applications such as critical high power planetary observing and digital imaging the smaller black focus knob Figure 1 1 1 2 offers fine focus adjust ment The fine focus knob rotates eleven times to one single rotation of the coarse focus knobs making an 11 1 ratio for extremely precise focusing If you find that the focus adjustment is too hard to turn or if the drawtube slips under the weight of your eyepiece or camera you can make adjustments to the focuser tension by using the focuser tension set screw located on the bottom side of the focuser Figure 2 Make adjustments to this set screw until the focuser motion feels smooth and holds in place whe
7. e three socket head screws with slight tension but do no over tighten them Using 1 25 and 2 Accessories Your ED T CF refractor can accommodate both 1 25 and 2 accessories including just about any eyepiece diagonal or camera The Crayford focuser has a 2 eyepiece holder with a 1 25 eyepiece adapter installed Figure 3 Both the 2 eye piece holder and 1 25 eyepiece adapter feature a brass com pression ring to hold your accessories in place without mark ing them The telescope must be used with either a diagonal or extension tube in order for the eyepiece to reach focus In most cases you will be using a 90 star diagonal for visual use with an eyepiece To attach a 1 25 diagonal or extension tube to your telescope 1 Remove the dust cap from the 1 25 eyepiece adapter 2 Insert the barrel of your diagonal or extension tube into the 1 25 eyepiece adapter 3 Secure the barrel in place by firmly tightening the thumb screw on the 1 25 eyepiece adapter To attach a 2 diagonal or extension tube to your telescope 1 Loosen the thumbscrews on the focuser s 2 eyepiece holder and remove the 1 25 eyepiece adapter 2 Insert the barrel of your diagonal or extension tube into the 2 eyepiece holder 3 Secure the barrel in place by firmly tightening the thumb screws Focuser eiclcls cle a ad thumbscrew ee J i a i Threaded holes for i 42 finder scope dovetail base ED102T CF F
8. ieces of different focal lengths to allow viewing over a range of magnifications To calculate the magnification or power of a telescope simply divide the focal length of the telescope by the focal length of the eyepiece Telescope Focal Length mm Cl Magnification Eyepiece Focal Length mm g If all outside viewing conditions are ideal every telescope with good optics supports a maximum of about 60x per inch or 2 4x per millimeter of aperture Keep in mind that at higher powers an image will always be dimmer and less sharp this is a fundamental law of optics In most cases the steadiness of the air the seeing will limit how much magnification the scope can tolerate rather than the telescope itself Always start viewing with your lowest power longest focal length eyepiece in the telescope After you have located and observed the object with it you can try switching to a higher power eyepiece to ferret out more detail if atmospheric con ditions permit If the image you see is not crisp and steady reduce the magnification by switching to a longer focal length eyepiece As a general rule a small but well resolved image will show more detail and provide a more enjoyable view than a dim and fuzzy over magnified image Imaging with the ED T CF Refractors The ED T CF refractors make very capable astrographs for your CCD or DSLR camera To attach a DSLR camera all you will need is the appropriate T ring for the ma
9. ke and model of your camera a 2 prime focus camera adapter and 2 exten sion tube available from Orion Simply attach the T ring to the camera body and thread the 2 prime focus camera adapter into the T ring Insert the barrel of the camera adapter into the 2 eyepiece holder on the ED T CF focuser and secure it with the thumbscrew The ED T CF refractors were designed to reach focus with both DSLR and CCD cameras and additional accessories like filter wheels and flip mirrors Because of this you will need an extension tube to reach focus if you are only attaching the camera without additional accessories Imaging equipment is sometimes heavier than a diagonal and eyepiece The dual speed Crayford focuser is capable of handling the weight of your CCD or DSLR camera Adding tension to the focuser drawtube will increase the amount of weight the focuser can handle Install your camera onto the focuser during the day Check the focuser for any slippage If the focuser drawtube slips under the weight of the camera you will need to add more tension to the focuser by tightening the focus tension set screw Figure 2 Care amp Maintenance Give your telescope reasonable care and it will last a lifetime When not in use keep its dust cover on as well as the dust cap on the eyepiece opening Keep the telescope inside its packaging when not in use Store it indoors or in a dry garage Do not leave the telescope outside except when using it
10. lightly brush the lens with a soft camel hair brush Apply some cleaning fluid to a tissue never directly on the optics Wipe the lens gently in a circular motion then remove any excess fluid with a fresh lens tissue Oily fingerprints and smudges may be removed using this method Use caution rubbing too hard may scratch the lens Clean only a small area at a time using a fresh lens tissue on each area Never reuse tissues Specifications ED80T CF Apochromatic Refractor Optical tube Carbon Fiber Objective lens Apochromatic air spaced triplet including one lens made of FPL 53 ED glass Objective lens coating Fully multi coated Lens cell Machined aluminum Focal length 480mm Focal ratio f 6 Focuser 2 Dual Speed 11 1 Crayford accepts 1 25 or 2 accessories Focuser maximum load capacity 2 7 kg 6 Ibs Maximum backfocus 127mm 5 Baffling 2 knife edge black painted steel baffles Mounting 1 4 20 mounting block and dovetail plate Weight 2 7 kg 6 Ibs Length 37 8cm 14 9 with dew shield retracted ED102T CF Apochromatic Refractor Optical tube Carbon Fiber Objective lens Apochromatic air spaced triplet including one lens made of FPL 53 ED glass Objective lens coating Fully multi coated Lens cell Machined aluminum Focal length 714mm Focal ratio f 7 Focuser 3 Dual Speed 11 1 Crayford accepts 1 25 or 2 accessories Focuser maximum load capacity 4 5 kg 10 Ibs Maximum backfocus 127mm
11. n you have obtained focus It may be necessary to make adjustments when the weight of your accessories change significantly 3 Dual Speed Crayford Focuser For the ED102T CF The ED102 T CF features a large 3 format focuser to sup port imaging cameras with a greater imaging area The visual back of the focuser steps down to a standard 2 however the wider opening of the focuser and baffling system of the ED102T CF yields greater field illumination to support 35mm or larger format cameras Additionally the focuser supports very heavy payloads such as a large format CCD camera filter wheel and other accessories Focuser Rotation The focuser assembly on the ED T CF refractors have the ability to be rotated Under normal use you should not have to rotate the focuser since the eyepiece and diagonal can be rotated instead However focuser rotation can be beneficial for changing the camera orientation while imaging Additionally this feature can allow you to keep the focus knobs parallel to the ground no matter how your telescope is positioned To rotate the focuser loosen the focuser rotation lock screw Figure 3 counter clockwise Gently rotate the focuser to the desired orientation Lock the focuser in place by turning the focus rotation lock ring clockwise If you find the focuser is too difficult to rotate you may have to also loosen the three socket head screws around the focuser with a 1 5mm hex key not included Leave th
12. o connect the ED80T CF to a camera tripod simply screw the 1 4 20 stud Figure 4 1 The stock orientation of the ED80T CF mounting block Figure 4 2 Using the included 5mm hex key remove the 2 socket head screws to reverse the orientation of the mounting block to balance the telescope for heavier accessories balance the telescope for heavier accessories found on your camera tripod to the underside of the mounting block The mounting block also functions as a dovetail plate which is compatible with many Orion telescope mounts The dovetail plate is also compatible with many other mounts To connect the ED80T CF to a telescope mount loosen the attachment screw s on the mount s dovetail holder until the screw s pro vides enough clearance for the dovetail mounting plate Align the mounting block with the dovetail holder and slide it for ward Tighten the attachment screw s on the dovetail holder of the mount If you are using a camera tripod or telescope mount and need additional balance adjustment the orientation of the mounting block can be reversed This is especially helpful when using heavy accessories such as 2 eyepieces or DSLR cameras To reverse the orientation of the mounting block remove the two socket head screws using the included 5mm hex key that attaches the mounting block to the telescope tube and turn the block around 180 Figure 4 1 4 3 Once the mount ing block orientation has
13. our telescope Parts List EDS8OT CF Optical tube assembly Threaded metal objective cap 1 25 eyepiece adapter 5mm hex key Hard carrying case ED102T CF Optical tube assembly Threaded metal objective cap 1 25 eyepiece adapter Tube rings Dovetail mounting plate 4mm hex key Getting Started The ED Triplet Carbon Fiber ED T CF refractors come fully assembled from the factory The telescope s optics have been assembled and collimated at the factory so you should not have to make any adjustments to them Please keep the original shipping box In the unlikely event you need to ship the telescope back to Orion for warranty repair service you should use the original packaging The box also makes a very good container for storing the telescope when it is not in use Functions and Features The ED T CF refractors have several features designed to maximize the use and enjoyment of your telescope When you have become familiar with all of the functions of your ED T CF refractor you will be ready to begin using your new telescope under the night sky Retractable Dew Shield All ED T CF refractors feature a retractable dew shield Figure 1 1 1 2 which allows the telescope to become more compact for storage The dew shield s primary purpose is to prevent Focuser tension setscrew Focuser lock thumbscrew Figure 2 Locate the focuser tension set screw to change the tension for heavier loads dew water con
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