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P PO OW WE ER RS SE EE EK KE ER R 8 80 0 E EQ Q T TE EL LE ES SC CO OP PE E
INSTRUCTION MANUAL
INSTRUCTION MANUAL
#21048
#21048
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1 17 16 15 14 13 2 3 12 4 11 10 5 9 6 8 7 PowerSeeker 80EQ PowerSeeker 80EQ R Re ef fr ra ac ct to or r 2
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IDENTIFYING PARTS OF YOUR FIRSTSCOPE PowerSeeker 80EQ 1. Objective Lens 10 Right Ascension (R.A.) Setting Circle 2. Declination Setting Circle 11 Slow Motion Controls 3. Equatorial Mount 12. Focus Knob 4. Counterweight Bar 13. Star Diagonal 5. Counterweight 14. Eyepiece 6. Accessory Tray 15. 5x24 Finderscope 7. Tripod Leg 16. Tube Ring 8. Tripod Leg Tightening Screws 17. Camera Piggyback Adapter 9. Latitude Adjustment Screw IIN NT TR RO OD DU UC CT TIIO ON N
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Assembling Your Telescope Assembling Your Telescope 1) Your Celestron telescope should include all of the following: a. Tripod with center support bracket b. Telescope tube with tube rings attached c. Equatorial mount head d. Two 1 ¼" eyepieces e. 90˚ star diagonal f. 5x24 Finderscope g. 3x Barlow Lens h. 5# Counterweight i. Counterweight bar j. Two slow motion cables k. Eyepiece accessory tray l. The Sky CD rom 2) To set up the tripod, spread the legs outward until they
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11) Locate the finderscope. Remove the knurled nuts on the threaded posts at the focuser end of the telescope tube. Mount the finderscope bracket by placing the bracket over the posts protruding from the tube and tightening it down with the knurled nuts. Orient the finderscope so that the large lens is facing towards the front of the tube. See figure 3 12) Remove the lens cap from the front of the telescope. Aligning the Finderscope Figure 2 1) Locate a distant daytime object an
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you want. For very small movements and fine adjustments, turn the right ascension cable. Unlike the declination cable, the right ascension cable has 360˚ of continuous motion. Balancing the Telescope in Right Ascension (R.A.): The telescope should be properly balanced in order for it to move smoothly in both axes. Proper balance is essential if using an optional motor drive for accurate tracking. 1. To balance the right ascension axis, move the counterweight shaft so it is parallel
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. Inverted image, as viewed with Actual image as seen with the the eyepiece directly in telescope unaided eye Figure 7 Focusing To focus your telescope, simply turn the focus knob located directly below the eyepiece holder. Turning the knob clockwise allows you to focus on an object that is farther than the one you are currently observing. Turning the knob counterclockwise from you allows you to focus on an object closer than the one you are currently observing.
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Motion of the Stars The daily motion of the Sun across the sky is familiar to even the most casual observer. This daily trek is not the Sun moving as early astronomers thought, but the result of the Earth's rotation. The Earth's rotation also causes the stars to do the same, scribing out a large circle as the Earth completes one rotation. The size of the circular path a star follows depends on where it is in the sky. Stars near the celestial equator form the largest circles rising in
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If you are observing from Los Angeles, which has a latitude of 34°, then the celestial pole is 34° above the northern horizon. All a latitude scale does then is to point the polar axis of the telescope at the right elevation above the northern (or southern) horizon. To align your telescope: 1. Make sure the polar axis of the mount is pointing due north. Use a landmark that you know faces north. 2. Adjust the mount in altitude until the latitude indicator points to your latitude. Movi
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Finding the North Celestial Pole In each hemisphere, there is a point in the sky around which all the other stars appear to rotate. These points are called the celestial poles and are named for the hemisphere in which they reside. For example, in the northern hemisphere all stars move around the north celestial pole. When the telescope's polar axis is pointed at the celestial pole, it is parallel to the Earth's rotational axis. Many methods of polar alignment require that you know how
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2. The declination setting circle is factory set and should not need any adjustment if it reads accurately. 3. The right ascension setting circle (#10) must be aligned. Choose a bright and easy to find star in a star chart and note the coordinates (right ascension and declination). Find the star in the finderscope and then in the telescope. Now, rotate the right ascension circle to match the coordinates of the star with the indicator mark. If you polar aligned the telescope accurately,
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Apparent Field of Eyepiece True Field = Magnification As you can see, before determining the field of view, you must calculate the magnification. Using the example in the previous section, we can determine the field of view using the same 20mm eyepiece. The 20mm eyepiece has an apparent field of view of 45°. Divide the 45° by the magnification, which is 45 power. This yields an actual field of 1°, or a full degree. To convert degrees
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CELESTIAL OBSERVING Now that your telescope is set up, you’re ready to use it for observing. This section covers visual observing for both solar system and deep-sky objects. Observing the Moon In the night sky, the moon is a prime target for your first look because it is extremely bright and easy to find. Although the beauty of the full moon may make it seem a perfect viewing object, in fact, the light reflected from its fully illuminated face can be overpowering. In addition,
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Observing Deep-Sky Objects Deep-sky objects are simply those objects outside the boundaries of our solar system. They include star clusters, planetary nebulae, diffuse nebulae, double stars and other galaxies outside our own Milky Way. Unlike the sun, moon and our five major planets, most deep-sky objects are not visible to the naked eye. Finding them requires a method called star hopping. Celestron Sky Maps (#93722) can help you locate the brightest deep-sky objects. Most deep-sky
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condition and five the best. Seeing conditions can be classified in one of three categories. The definitions of these categories are based on the causes of the different seeing conditions. Type 1 seeing conditions are characterized by rapid changes in the image seen through the telescope. Extended objects, like the moon, appear to shimmer while point sources (stars) appear double. Type 1 seeing is caused by air currents within, or very close to, the telescope tube. These currents are
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S SP PE EC CIIF FIIC CA AT TIIO ON NS S #21048 Optical System: Refractor Aperture: 80mm (3.1") Focal Length: 900mm F/ratio: f/11 Focuser Rack and Pinion Standard Oculars (or 20mm 1¼" (45x) Eyepieces) 4mm 1¼" (225x) 3x Barlow (135-675x) Resolution 1.7 arc seconds Light gathering Power 131x unaided eye Limiting Magnitude 12 Highest useful Power 189x NOTE: Specifications are subject to change without notice. OPTIONAL ACCESSORIES You will find that additional accessories en
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Filters Sets, Eyepiece - Celestron offers four convenient filter sets, which contain four different filters per set. Not only are these highly useful filter combinations, but they also offer an economical way to add versatility to your filter collection. Series 1 – #94119-10 Orange, Light Blue, ND13%T, Polarizing (#s 21, 80A, #15, Polarizing) Series 2 – #94119-20 Deep Yellow, Red, Light Green, ND25% T (#s 12, 25, 56, 96ND-25) Series 3 – #94119-30 Light Red, Blue, Green, ND50% T (#s 23A,
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CELESTRON TWO YEAR WARRANTY A. Celestron warrants this telescope to be free from defects in materials and workmanship for two years. Celestron will repair or replace such product or part thereof which, upon inspection by Celestron, is found to be defective in materials or workmanship. As a condition to the obligation of Celestron to repair or replace such product, the product must be returned to Celestron together with proof-of-purchase satisfactory to Celestron. B. The Proper Re
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Celestron 2835 Columbia Street Torrance, CA 90503 U.S.A. Tel. (310) 328-9560 Fax. (310) 212-5835 Web site at www.celestron.com Copyright 2005 Celestron All rights reserved. (Products or instructions may change without notice or obligation.) Item # 21048-INST $10.00 01-05 Printed in China
