Bresser 8" Messier Dobson Instruction Manual
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Bresser 8" Messier Dobson Instruction Manual

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DOB 203
203/1218 (8˝) · f/6
Parabolischer Newton-Reflektor · Parabolic Newtonian Reflector · Réflecteur parabolique Newtonien
Parabolische Newton reflector · Riflettore parabolico Newton · Reflector parabólico Newton · Refletor parabólico Newton
Параболическая Ньютона Отражатель
Art. No. 47-16420
InstructIon MAnuAL
GB

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  • Page 1 DOB 203 203/1218 (8˝) · f/6 Parabolischer Newton-Reflektor · Parabolic Newtonian Reflector · Réflecteur parabolique Newtonien Parabolische Newton reflector · Riflettore parabolico Newton · Reflector parabólico Newton · Refletor parabólico Newton Параболическая Ньютона Отражатель Art. No. 47-16420 InstructIon MAnuAL...
  • Page 2 Allgemeine Warnhinweise · General Safety Informations · Avertissements généraux Algemene veiligheid informatie · Avvertenze generali · Advertencias generales de seguridad Informações gerais de segurança · Общие предупреждения Never take the device apart. Please consult GEVAAR Voor brand! your dealer if there are any defects. The Stel het apparaat –...

  • Page 3: Scope Of Delivery

    ¡PELIGRO de lesiones corporales! Ao vender ou entregar o aparelho a Сохраните руководство по эксплуатации No mire nunca con este aparato directamente outro proprietário/utilizador do produto для последующего использования. hacia el sol o hacia sus inmediaciones. deve entregar juntamente o manual de При...
  • Page 4 Parts Overview Fig. 2 Inset A 1& Inset B - 4 -...

  • Page 5: Parts Overview

    Parts Overview OTA (Optical Tube Assembly) (Fig. 2) 1. Eyepiece 2. Eyepiece holder 3. Aperture 4. LED viewfinder 5. OTA bracket (2x) with clamp screw (5a) 6. Fixing screws (4x) 7. Altitude wheels (2x) with lateral guids (7a) Basis (Fig. 2) 8.

  • Page 6: Assembling The Base

    Setup Assembling the base NOTE! You additionally need a suitable Phillips screwdriver, an Allen wrench and an open-end wrench or ring wrench for assembling. Use an old carpet or another soft surface to avoid any damages to the component parts. Required STEP 1 (Fig.
  • Page 7 Setup STEP 5 (Fig. 7): Fig. 7 1. Set up the front part (Fig. 1, F) and put it with the drill holes of the quick fasteners (Fig. 1, M) over the threaded bolts (Fig. 1, L) of the left side part (Fig. 1, C). 2.
  • Page 8 Aufbau · Setup · Montage · Montaggio · Montaje · Montagem · Устройство Fig. 10 Attaching the OTA STEP 8 (Fig. 10): 1. Attach both altitude wheels (Fig. 1, H) with the fixing screws (Fig. 1, T) to the right and left side of the OTA. NOTE! Make sure that the 'noses' on one side (Fig.
  • Page 9 Zubehör anbringen · Installing accessories · Fixation des accessoires Accessoires aansluiten · Montaggio degli accessori · Instalación de accesorios Adaptação de acessórios · Установка дополнительного оборудования Fig. 12 Inserting the eyepiece (Fig. 12) 1. Insert the 1 ¼" eyepiece (Fig. 1, J) into the eyepiece holder (Fig. 12, 15). 2.

  • Page 10: Using A Dobsonian Telescope

    Using a Dobsonian telescope 1. Never lubricate the Teflon pads on the ground plate. Your Dobsonian has been designed with some inherent friction. You want the telescope to move easily when you position it, but you also want it to stay in the position you place it. Using any kind of oil, silicone spray, wax, or grease will ruin the performance by causing the telescope to move too easily.
  • Page 11 Calculating the magnification The magnification, or power of a telescope is determined by two factors: the focal length of the eyepiece and the focal length of the telescope. Your telescope is supplied with one eyepiece. The focal length of the eyepiece, 25mm, is printed on its side.
  • Page 12 Observation Allow for a temperature adjustment for about 90 minutes before starting an observation. Because when bringing the telecope e.g. from a heated car or house to a place outside so called tube seeing may occur. This means that the primary mirror is warmer than the air and will produce air turbulence.
  • Page 13 Verwendung · Use · Utilisation · Gebruik · Utilizzo · Uso · Utilização · Применение human observer of this planet in 1610 couldn´t know that the planet had rings – he described that Saturn had „ears“. The rings of Saturn mainly consist of billions of icy particles – from tiniest dust up to the size of a house.

  • Page 14: Useful Tips

    Useful tips By the way, you might have noticed something strange when you looked through your eyepiece. The image is upside down, and it is also reversed. That means reading words can be a problem or viewing objects on the ground can be a problem. But it has no affect on astronomical objects. Because of the Earth's rotation all objects seem to drift across the field of view.

  • Page 15: Maintenance And Cleaning

    Maintenance and Cleaning Maintenance Your telescope is a precision instrument that will provide many years of fun. When you are treating this telescope with the same care as for example a expensive camera, it is very unlikely that you will ever need to return it for service or maintenance. Please notice the following rules: 1.
  • Page 16 Maintenance and Cleaning direction. Note that these offsets have been performed at the factory prior to shipment of your telescope. It is only necessary for you to confirm that the telescope has not been badly jarred out of collimation, and to perform the final fine-tuning of Step 4, below. To check and, if necessary, set the optical collimation, follow these steps: 1.

  • Page 17: Technical Data

    Maintenance and Cleaning Technical data BRESSER 8" Messier Dobson Tubue made of metal with adjustable brackets and altitude wheels made of aluminium Secondary mirror holder four armed, steel Primary mirror 8” (203 mm), parabolic Focal length 1218 mm Aperture ration...
  • Page 18 Entsorgung · Disposal · Elimination · Afval · Saltimento · Eliminación · Eliminação VIII Утилизация réglementations applicables, veuillez vous información sobre eliminación adresser aux services communaux en charge reglamentaria en los proveedores de servicios Entsorgen Sie die Verpackungsmateria- de la gestion des déchets. de eliminación municipales o en la agencia lien sortenrein.
  • Page 19 Alternatively you can also send an email to manuals@bresser.de or leave a message on +49 (0) 28 72 – 80 74-220*. Please always La durata regolare della garanzia è di 2 anni e state your name, precise address, a valid phone decorre dalla data dell'acquisto.
  • Page 20 Bresser GmbH Gutenbergstr. 2 · DE-46414 Rhede Germany www.bresser.de · service@bresser.de...

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