Bresser SPACE EXPLORATION AR-90/900 EXOS-1/EQ4 Instruction Manual
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Bresser SPACE EXPLORATION AR-90/900 EXOS-1/EQ4 Instruction Manual

Bresser SPACE EXPLORATION AR-90/900 EXOS-1/EQ4 Instruction Manual

Achromatic refractor (ar)
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SPACE EXPLORATION COLLECTION
Telescope AR-90/900 EXOS-1/EQ4
Art. No. 9800740
Instruction manual
Achromatic Refractor (AR)

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Summary of Contents for Bresser SPACE EXPLORATION AR-90/900 EXOS-1/EQ4

  • Page 1 SPACE EXPLORATION COLLECTION Telescope AR-90/900 EXOS-1/EQ4 Art. No. 9800740 Instruction manual Achromatic Refractor (AR)
  • Page 2 eneral nformatIons elescope eatures 3  1^ I Fig. 1a: Achromatic Refractor AR-90 Achromatic Refractor with EXOS-1 3& Item number 9800740 Optical design achromatic refractor Clear aperture 3.5” = 90 mm Focal length 900 mm Focal ratio f/10 Resolving power 1.27 arc sec Coatings multi-coated...
  • Page 3 eneral nformatIons elescope eatures 1& 1 2 2& Fig. 1c: The mount...

  • Page 4: Important Safety Information

    Itel DANGER! Solar observation only by using the included solar filter and in combination with the dedicated telescope. The solar filter must be mounted in front of the lens, i.e., before the sunlight enters the telescope. BEFORE EVERY SOLAR OBSERVATION: BEFORE EVERY SOLAR OBSERVATION: Remove the optical finderscope from the telescope tube to avoid Remove the optical finderscope from the telescope tube to avoid...
  • Page 5 Product Name: Solar Filter for Telescopes Filter category: E15, E16 Bresser GmbH declares that the above-named product corresponds to the following directives and relevant standards in its conception and design as well in the version marketed by us. Directive: Harmonized Standards: PPE 89/686/EEC EN 1836:2005, cl.
  • Page 6 elescope eatures Your personal window to the universe Observe the feather structure of an eagle from 150 yards or study the rings of the planet Saturn from a distance of 800 million miles. Focus beyond the Solar System and observe majestic nebulae, ancient star clusters, and remote galax- ies.
  • Page 7 elescope eatures the focuser assembly. For normal observing with an eyepiece and diago- nal prism, it is not necessary to use the lock knob. 17 Dec. Lock: Controls the manual movement of the telescope. Turning 1& Important: the Dec. lock counterclockwise unlocks the telescope enabling it Before loosening the DEC lock, to be freely rotated by hand about the Dec.

  • Page 8: Telescope Assembly

    eXos-2 ssemblInG Assembling (EXOS-1 mount on ST-2 tripod) Telescope Assembly As you unpack your telescope, carefully note the following parts. The assembly is shipped in separate boxes. Fig. 3: The tripod • Equatorial mount with polar alignment finder • Heavy duty, adjustable steel tube tripod with leg braces, three tripod leg lock knobs, and a captive mount locking knob •...
  • Page 9 eXos-2 ssemblInG you will see the bolt blocking the hole. Move the counterweight slightly DEC-setting circle to make it disappear in its drill hole and reveal the hole. If it doesn‘t, Shaft base carefully loosen the counterweight screw until the bolt moves. Remove Counterweight the safety cover (23, illustration 1d) from the rod.

  • Page 10: Balancing The Telescope

    Irst teps 11. Adjust the height of the tripod: Adjust the height of the tripod by loosening the tripod lock knobs (Fig. 11). Extend the sliding inner Eyepiece section of each tripod leg to the desired length; then tighten each knob. Sucher Adjust the tripod to a height that is comfortable for viewing.

  • Page 11: Aligning The Viewfinder

    Irst teps Aligning the Viewfinder Collimation screws Eyepiece The wide field of view of the telescope‘s viewfinder (4, Fig. 1a) pro- vides an easier way to initially sight objects than the main telescope‘s eyepiece (3, Fig. 1a), which has a much narrower field of view. If you have not already attached the viewfinder to the telescope tube assembly, follow the procedure described in step 9, page 9.
  • Page 12 Irst teps Tips Further Study..This manual gives only the briefest introduction to astronomy. If you are interested in pursuing further studies in astronomy, a few topics are suggested below that are worth reading up on. Try looking up some of these in the optional Autostar glossary. Also included below is a small sampling of books, magazines, and organizations that you might find helpful.

  • Page 13: Choosing An Eyepiece

    Irst teps Choosing an Eyepiece A telescope’s eyepiece magnifies the image formed by the telescope’s main optics. Each eyepiece has a focal length, expressed in millim- eters, or “mm.” The smaller the focal length, the higher the magnifica- tion. For example, an eyepiece with a focal length of 9mm has a higher magnification than an eyepiece with a focal length of 25mm.

  • Page 14: Observing By Moving The Telescope Manually

    bservatIon Observation Important Note: Observing by Moving the Telescope Manually Objects appear upside-down After the telescope is assembled and balanced as described previously, and reversed left- for-right when you are ready to begin manual observations. View easy-to-find terrestrial observed in the viewfinder. With objects such as street signs or traffic lights to become accustomed to refracting tele scope models, the functions and operations of the telescope.

  • Page 15: Setting The Polar Home Position

    bservatIon Setting the Polar Home Position 1. Level the mount, if necessary, by adjusting the length of the three tripod legs. North Point optical tube to north 2. Unlock the R.A. Lock (33, Fig. 1d). Rotate the Optical Tube Assembly until the counterweight shaft is pointing straight down over the mount.

  • Page 16: Maintenance

    aIntenance and ervIce Adapt an DSLR camera To mount an DSLR camera, a T2 ring suitable for the camera brand is required (e.g. Art.No.: 4921350 or 4920000). Step 1 T2 ring (not included) Step 2 Maintenance Maintenance guidelines include: a. Avoid cleaning the telescope’s optics: A little dust on the front surface of the telescope’s correcting lens causes virtually no degradation of image quality and should not be considered reason to clean the lens.

  • Page 17: Customer Service

    If you have a question concerning your elescope, contact the Bresser Customer Service Department. In the improbable case of a malfunction, please contact first the Bresser customer service before sending back the telescope. Please give complete error descriptions and specific information about the defective part. The great majority of servicing issues can be resolved by telephone, avoiding return of the telescope to the factory.

  • Page 18: Appendix A: Celestial Coordinates

    a: c ppendIX elestIal coordInates Appendix A: Celestial coordinates For a sufficient tracking of an celestial object, the telescope mount has to be aligned with the celestial pole. By doing this, the mount’s axes are orientated in this way that they fit to the celesial sphere.

  • Page 19: Locating The Celestial Pole

    a: c ppendIX elestIal coordInates Every celestial object can be exactly determined by these coordinates.Using setting circles prerequisites an advanced observing technique. If you use them for the first time, first point a bright star (the guide star) with known coordinates and adjust the setting circles to them.
  • Page 20 At club meetings, you will meet other astronomy and Bresser enthusiasts with whom you will be able to share your discoveries. Clubs are an excellent way...

  • Page 21: Appendix B: Latitude Chart

    b: l ppendIX atItude hart Appendix B: Latitude Chart Latitude Chart for Major Cities of the World To aid in the polar alignment procedure (see page 25), latitudes of major cities around the world are listed below. To determine the latitude of an observing site not listed on the chart, locate the city closest to your site.

  • Page 22: United States Of America

    b: l ppendIX atItude hart UNITED STATES OF AMERICA City Country Latitude Albuquerque New Mexico 35° N Anchorage Alaska 61° N Atlanta Georgia 34° N Boston Massachusetts 42° N Chicago Illinois 42° N Cleveland Ohio 41° N Dallas Texas 33° N Denver Colorado 40°...

  • Page 23: Appendix D: Basic Astronomy

    d: b ppendIX asIc astronomy Appendix D: Basic astronomy In the early 17th century Italian Scientist Galileo, using a telescope smaller than your telescope, turned it skyward instead of looking at the distant trees and mountains. What he saw, and what he realized about what he saw, has forever changed the way mankind thinks about the universe.

  • Page 24: Deep-Sky Objects

    d: b ppendIX asIc astronomy Twelve Apollo astronauts left their bootprints on the Moon in the late 1960‘s and early 1970‘s. However, no telescope on Earth is able to see these foot- prints or any other artifacts. In fact, the smallest lunar features that may be seen with the largest telescope on Earth are about one-half mile across.

  • Page 25: A "Road Map" To The Stars

    d: b ppendIX asIc astronomy Constellations are large, imaginary patterns of stars believed by ancient civilizations to be the celestial equivalent of objects, animals, people, or gods. These patterns are too large to be seen through a telescope. To learn the constellations, start with an easy grouping of stars, such as the Big Dipper in Ursa Major.
  • Page 26 d: b ppendIX asIc astronomy Fig. 47: The Andromeda Galaxy (M31), the biggest one in our local group. Fig. 48 Messier-Tipps Star Charts Star charts and planisphere are very useful tools and are great aids in plan- ning a night of celestial viewing. A wide variety of star charts are avail- able in books, in magazines, on the internet and on CD Roms.
  • Page 27 d: b ppendIX asIc astronomy Distances in space Distance between Earth and Moon 383.000 km / 240’000 mi Earth Moon Diameter = 12’664 km Diameter = 3’456 km Distance between Planets The distance between the Sun and our Earth is 150’000’000 km / 93’750’000 mi or 1 AU (Astronomical unit) Mercury Venus Earth...
  • Page 28 e: s ppendIX tar maps Winter Fig. 50: Sky view (Beginning of January, ca. 22 h), Facing south Fig. 50a: Sky view in winter (Beginning of <January, ca. 22 h), facing north...
  • Page 29 e: s ppendIX tar maps Spring Fig. 51: Sky view in spring (Beginning of April, ca. 22 h), facing south Abb. 51a: Sky view in spring (Beginning of April, ca. 22 h), facing north...
  • Page 30 e: s ppendIX tar maps Summer Fig. 52: Sky view in summer (Beginning of July, ca. 22 h), facing south Fig. 52a: Sky view in summer (Beginning of July ca. 22 h), facing north...
  • Page 31 e: s ppendIX tar maps Autumn Fig. 53: Sky view in autumn (Beginning of October, ca. 22 h), facing south Fig. 53a: Sky view in autumn (Beginning of October, ca. 22 h), facing north...

  • Page 32: Warranty And Service

    The regular warranty period is 2 years and begins on the day of purchase. To benefit from an extended voluntary warranty period as stated on the gift box, registration on our website is required. You can consult the full warranty terms as well as information on extending the warranty period and details of our services at www.bresser.de/warranty_terms.

  • Page 33: Service Locations

    (de preferencia por e-mail: service@bresseruk.com e-mail). Telephone*: +44 1342 837 098 BRESSER UK Ltd e-mail: servicio.iberia@bresser-iberia. Bresser UK Ltd. Suite G3, Eden House Teléfono*: +34 91 67972 69...
  • Page 34 BRESSER GmbH Gutenbergstr. 2 · 46414 Rhede Germany International Space Archives logo © International Space Archives LLC. Irrtümer und technische Änderungen vorbehalten. · Errors and technical changes reserved. · Sous réserve d’erreurs et de modifications techniques. · Vergissingen en technische veranderingen voorbehouden. · Con riserva di errori e modifiche tecniche.

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