Celestron Telescope Power Seeker 50 User Manual

PowerSeeker 50  
INSTRUCTION MANUAL  
#21039  
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Quick Setup  
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THE POWERSEEKER 50 REFRACTOR  
The PowerSeeker is a classical, two element refracting telescope that comes on an altazimuth mount. This section  
instructs you on the proper assembly and use of your PowerSeeker telescope, which is shipped in one box, containing  
all the parts you need to assemble it. Unpack and lay out all of the parts in a large, clear area where you’ll have room  
to work. Keeping track of the parts, use the list below and the telescope diagram to confirm you have, and can identify  
each part.  
1. Objective Lens  
2. Telescope Mounting Plate  
3. Altitude locking screw  
4. Tripod Head  
5. Tripod legs with a collapsible center leg brace  
6. Focus Knob  
7. 90° diagonal .96"  
8. Eyepiece .96"  
9. Finderscope Bracket  
10. 5x24 Finderscope  
11. Telescope Optical Tube  
Assembling Your Telescope  
To set up the tripod, locate the tripod legs (5) and the telescope optical tube (11).  
Remove the tripod from the box and spread the legs apart until the center leg brace is fully extended.  
1. Extend the inner portion of each of the three tripod legs to the desired height. Tighten the thumb screw on the  
side of each tripod leg to secure them in place. See Figure 1  
2. After all the screws have been hand-tightened, you are ready to attach the telescope tube to the mount.  
Remove the altitude locking screw (3) from the tripod head (4).  
3. Place the telescope tube on the altazimuth mount so that the hole in the mounting platform (2) lines up with  
the holes in the tripod head (4).  
4. Insert the altitude locking screw (3) through the tripod head (4) and mounting platform (2) and tighten the  
retaining nut to the other side of the screw.  
Attaching the Accessories  
Your telescope comes with the following optical accessories:  
Star Diagonal .96"  
20mm eyepieces .96"  
12mm eyepieces .96"  
4mm eyepiece .96 "  
3x Barlow Lens .96"  
1. Remove the caps from the focuser and the diagonal .  
2. Insert the chrome end of the diagonal into the focuser (Figure 3) and lock into place by tightening the thumb  
screws on the focuser.  
3. Remove caps from the eyepiece and place it into the diagonal (Figure 4). Lock it into place with the thumb  
screw.  
4. Your telescope also comes with a 3x Barlow lens which triples the magnifying power of each eyepiece (see  
Magnification section of the manual). To use the barlow lens, remove the diagonal and insert the barlow lens  
directly into the focuser. Then start by using the low power eyepiece such as the 20mm, and insert it either  
directly into the barlow lens or into the diagonal. See Figure 5.  
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Attaching the Finderscope  
1. Remove the two small, silver thumbscrews located at the back of the telescope tube. See Figure 2.  
2. Place the finderscope bracket over the two holes in the telescope tube, lining up the holes on the finderscope  
bracket with those in the telescope tube.  
3. Insert the thumbscrews through the finderscope bracket and thread them into the telescope tube.  
Aligning the Finderscope  
1. Locate a distant daytime object and center it in a low power eyepiece in the main telescope.  
2. Look through the finderscope and take notice of the position of the same object.  
3. Without moving the main telescope, turn the adjustment thumb screws located around the finderscope bracket  
until the crosshairs of the finder are centered on the alignment object.  
Finding Objects  
1. Loosen the altitude locking screw (3) on the base of tripod head (4), then move the telescope in the desired  
direction.  
2. Look through the finderscope and pan the telescope until the object appears in the field of view. Once it’s in  
the field, tighten the altitude and azimuth locks.  
Focusing  
1. Once you have found an object in the telescope, turn the focusing knob (6) until the image is sharp.  
2. To focus on an object that is nearer than your current target, turn the focusing knob toward the eyepiece (i.e.,  
so that the focusing tube moves away from the front of the telescope). For more distant objects, turn the  
focusing knob in the opposite direction.  
3. To achieve a truly sharp focus, never look through glass windows or across objects that produce heat waves,  
such as asphalt parking lots.  
Image Orientation  
1. When observing with a diagonal, the image will be right side up, but reversed from left to right.  
2. When observing straight through, with the eyepiece inserted directly into the telescope, the image will be  
inverted. Also, the image in the finderscope is inverted.  
Magnification  
The magnification (or power) of a telescope varies depending upon the focal length of the eyepiece being used and the  
focal length of the telescope.  
The PowerSeeker 50 telescope has a focal length of 600mm and comes with a 20mm 1¼" eyepiece. To calculate  
magnification, use the following formula, in which FL = focal length:  
FL (telescope) in mm  
FL (eyepiece) in mm  
Magnification =  
Therefore, if you use the 20mm eyepiece your magnification is 600/20 = 30x. The same formula can be applied to any  
of your eyepieces.  
Important!  
Magnification through any telescope has its limits. These limits are determined by the laws of optics and the nature of  
the human eye. Most of your viewing will be done in the range of 30x to 100x. Higher powers are used mainly for  
lunar and sometimes planetary observing where you can greatly enlarge the image and the atmospheric conditions are  
near perfect. The images at extremely high powers magnify the image, but remember that the contrast will be very low  
due to the high magnification. For the brightest images with the most contrast, start by using the lower power eyepiece  
with a smaller image scale.  
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The following magnification levels can be achieved when using the standard eyepiece in conjunction with the 3x  
Barlow lens:  
Eyepiece Magnification  
Mag. with 3x Barlow  
Lens  
90x  
150x  
450x  
20mm  
12mm  
4mm  
30x  
50x  
150x  
TELESCOPE MAINTENANCE  
With proper care, your telescope should rarely need any maintenance work. To maintain your telescope in the best  
possible condition, observe the follow suggestions:  
1. When your telescope isn’t in use, replace all lens covers to keep dust and contaminants off the optical surfaces.  
2. A small amount of dust on any optical surface isn’t a problem and doesn’t need to be removed. If the dust builds  
up, then use a can of compressed air and a camels hair brush to remove the dust. To remove fingerprints or other  
contaminants, use an optical cleaning kit or the Celestron Lens Pen (#93575).  
3. If the inside of the objective lens needs cleaning, it should be done by a professional. Either have your instrument  
serviced by a telescope repair facility or return it to the factory for servicing.  
SPECIFICATIONS  
PowerSeeker 50’s  
Aperture  
50mm  
Focal Length  
Focal Ratio  
Mounting  
Tripod  
600mm  
f/12  
Altazimuth  
Adjustable Aluminum Tripod  
NOTE: Specifications are subject to change without notice.  
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Optional Accessories  
Celestron offers a full line of optional accessories for your telescope. Please refer to the Celestron Accessory Catalog  
(#93685) for a complete description, or logon to our web site at www.celestron.com.  
Diagonal, Hybrid Mirror 90° (.96 to 1¼") #94106 - The economy Hybrid Mirror Diagonal (90°) provides a cost  
effective way to upgrade telescopes supplied with .96" eyepieces, to higher quality 1¼" eyepieces.  
Diagonal, Erect Image # 94113-A -An Amici prism design that allows you to look into the telescope at a 45° angle, at  
images that are oriented properly, meaning the image is upright and correct from left to right.  
Eyepieces – An assortment of 1¼” eyepieces are available to give you a wide range of  
magnifications.  
OMNI Plössl - 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.  
Ultima Ultima is not really a design, but a trade name for our 5-element, wide field  
eyepieces. In the 1-1/4” barrel diameter, they are available in the following focal lengths:  
5mm, 7.5mm, 10mm, 12.5mm, 18mm, 24mm, 30mm, 35mm, and 42mm. These eyepieces  
are all parfocal. The 35mm Ultima gives the widest possible field of view with a 1-1/4”  
diagonal.  
Filters, Eyepiece - To enhance your visual observations of solar system objects, Celestron offers a wide range of  
colored eyepiece filter sets that thread into the 1-1/4" oculars. Available sets are:  
#94119-10 – Orange, Light Blue, ND13%T, Polarizing (#s 21, 80A, 96ND-13, Polarizing)  
#94119-20 - Deep Yellow, Red, Light Green, ND25% T (#s 12, 25, 56, 96ND-25)  
#94119-30 - Light Red, Blue, Green, ND50% T (#s 23A, 38A, 58, 96ND-50)  
#94119-40 - Yellow, Deep Yellow, Violet, Pale Blue (#s 8, 15, 47, 82A)  
Flashlights - #93588 LED (light emitting diode) flashlights conveniently allow you to read star maps without  
diminishing your night vision. Both feature adjustable brightness and are small and lightweight, (#93592 is only 6 inches  
long, and weighs in at a only 3 ounces).  
Light Pollution Reduction (LPR) Filter (#94126A) - A 1¼” filter that threads into a 1¼” eyepiece, designed to  
enhance your views of deep-sky astronomical objects when observed from urban areas. The LPR filter selectively  
reduces the transmission of certain wavelengths of light, specifically those produced by artificial lights. This includes  
mercury, and high and low pressure sodium vapor lights. Additionally, it blocks unwanted natural light (also known as  
sky glow).  
Sky Maps (#93722) – When learning the night sky, Celestron Sky Maps offer just the  
guidance you need. The maps show all the constellations and brighter deep-sky objects  
and are printed on heavy, moisture-resistant paper for durability. The front cover  
features a rotating planisphere, indicating when specific constellations are visible.  
Peterson First Guides® - Astronomy (#93728)  
A simplified field guide to the stars, the planets and the universe featuring full color maps showing the positions of the  
stars throughout the year. This useful guide also includes beautiful constellation paintings, photographs, and clear,  
concise descriptions of stars, the planets, the sun, the moon, comets, black holes, galaxies and more.  
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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 Return Authorization Number must be obtained from Celestron in advance of return. Call Celestron at (310) 328-9560 to  
receive the number to be displayed on the outside of your shipping container.  
All returns must be accompanied by a written statement setting forth the name, address, and daytime telephone number of the owner,  
together with a brief description of any claimed defects. Parts or product for which replacement is made shall become the property of  
Celestron.  
The customer shall be responsible for all costs of transportation and insurance, both to and from the factory of Celestron, and  
shall be required to prepay such costs.  
Celestron shall use reasonable efforts to repair or replace any telescope covered by this warranty within thirty days of receipt. In the event  
repair or replacement shall require more than thirty days, Celestron shall notify the customer accordingly. Celestron reserves the right to  
replace any product which has been discontinued from its product line with a new product of comparable value and function.  
This warranty shall be void and of no force of effect in the event a covered product has been modified in design or function, or  
subjected to abuse, misuse, mishandling or unauthorized repair. Further, product malfunction or deterioration due to normal  
wear is not covered by this warranty.  
CELESTRON DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WHETHER OF MERCHANTABILITY OF FITNESS FOR  
A PARTICULAR USE, EXCEPT AS EXPRESSLY SET FORTH HEREIN.  
THE SOLE OBLIGATION OF CELESTRON UNDER THIS LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE  
COVERED PRODUCT, IN ACCORDANCE WITH THE TERMS SET FORTH HEREIN. CELESTRON EXPRESSLY DISCLAIMS  
ANY LOST PROFITS, GENERAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES WHICH MAY RESULT FROM  
BREACH OF ANY WARRANTY, OR ARISING OUT OF THE USE OR INABILITY TO USE ANY CELESTRON PRODUCT. ANY  
WARRANTIES WHICH ARE IMPLIED AND WHICH CANNOT BE DISCLAIMED SHALL BE LIMITED IN DURATION TO A  
TERM OF TWO YEARS FROM THE DATE OF ORIGINAL RETAIL PURCHASE.  
Some states do not allow the exclusion or limitation of incidental or consequential damages or limitation on how long an implied warranty  
lasts, so the above limitations and exclusions may not apply to you.  
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.  
Celestron reserves the right to modify or discontinue, without prior notice to you, any model or style telescope.  
If warranty problems arise, or if you need assistance in using your telescope contact:  
Celestron  
Customer Service Department  
2835 Columbia Street  
Torrance, CA 90503 U.S.A.  
Tel. (310) 328-9560  
Fax. (310) 212-5835  
Monday-Friday 8AM-4PM PST  
This warranty supersedes all other product warranties.  
NOTE: This warranty is valid to U.S.A. and Canadian customers who have purchased this product from an Authorized Celestron  
Dealer in the U.S.A. or Canada. Warranty outside the U.S.A. and Canada is valid only to customers who purchased from a Celestron  
Distributor or Authorized Celestron Dealer in the specific country and please contact them for any warranty service.  
Printed in China  
#21039-INST  
04-03  
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