Safety Hints - Dörr Danubia DELTA 20 Manual De Instrucciones

GB
THANK YOU for choosing this DÖRR quality product.
Please read the instruction manual and safety hints carefully before
fi rst use. Keep this instruction manual together with the device for fu-
ture use. If other people use this device, make this instruction manual
available. This instruction manual is part of the device and must be
supplied with the device in case of sale.
DÖRR is not liable for damages caused by improper use or the failure
to observe the instruction manual and safety hints.
01 |

SAFETY HINTS

Never look directly into the sun or near the sun with this telescope or with
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the viewfinder! Risk of blinding!
This telescope is not a toy! Children should use the telescope with adult
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supervision only!
People with physical or cognitive disabilities should use the device with
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supervision.
Please note that the light appearing through the eyepiece is strongly bundled and can develop a great heat.
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Therefore, make sure that the telescope is not directed at easily flammable materials. After use, please
attach the eyepiece protection cover.
Protect the telescope from rain, moisture, direct sunlight and extreme temperatures.
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To prevent the telescope from tilting, make sure that the telescope stands secure on firm floor.
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This telescope is not a toy. To prevent accidents and suffocation keep the telescope, the accessories and
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the packing materials away from children and pets.
Protect the telescope against dirt. Never use aggressive cleansing agents or benzine to clean the tele-
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scope. We recommend a soft, slightly damp microfiber cloth to clean the outer parts of the telescope.
Store the telescope in a dust-free, dry and cool place.
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02 | CONTENT
01 | Safety Hints
02 | Content
03 | Nomenclature Wega 900
04 | Nomenclature Delta 20 / 30 / Saturn 50
05 | Assembly Instructions Delta 20 / Wega 900 with EQ1-Mount
05.1 Tripod setup
05.2 Preparing the mount for assembly
05.3 Telescope assembly
05.4 Finderscope assembly
06 | Assembly Instructions Delta 30 / Saturn 50 with EQ2-Mount
06.1 Tripod setup
06.2 Telescope assembly
06.3 Finderscope assembly
06.4 Red Dot Finder assembly (optional)
06.5 Eyepiece assembly
07 | Operating your telescope
07.1 Aligning the fi nderscope
07.2 Using the Red Dot Finder (optional)
07.3 Balancing the telescope
07.4 Using the optional barlow lens
07.5 Focusing
07.6 Polar alignment
07.7 Tracking celestial objects
07.8 Using the setting circle
07.9 Pointing your telescope
08 | Choosing the apropriate eyepiece
08.1 Calculating the magnifi cation
08.2 Calculating the fi eld of view
08.3 Calculating the exit pupil
09 | Observing the sky
09.1 Sky conditions
09.2 Selecting an observing site
09.3 Choosing the best time to observe
09.4 Cooling the telescope & adapting your eyes
10 | Care and Maintenance of your telescope
10.1 Collimating a Newtonian
10.2 Aligning the secondary mirror
10.3 Aligning the primary mirror
11 | Cleaning your telescope
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