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Table of contents

1 Validity note .................................................................................................................................................... 4

2 Properties:....................................................................................................................................................... 4

3 About this Instruction Manual....................................................................................................................... 5

4 Purpose of use................................................................................................................................................ 5

5 General safety instructions ........................................................................................................................... 5

6 Parts overview and scope of delivery .......................................................................................................... 6

7 Choice of location .......................................................................................................................................... 7

8 Unpack............................................................................................................................................................. 7

9 Assembly of the basic elements ................................................................................................................... 7

10 Mounting the counter weights ...................................................................................................................... 8

11 Mounting and adjustment of the secondary mirror cage ........................................................................... 9

12 Mounting the stray light shield ................................................................................................................... 10

13 Mounting the viewfinder scope................................................................................................................... 10

14 Power supply for the fans............................................................................................................................ 11

15 Adjusting the viewfinder telescope ............................................................................................................ 11

16 Adjusting and focusing the eyepiece extension ....................................................................................... 12

17 Collimation/adjustment of the optics ......................................................................................................... 12

18 Star search .................................................................................................................................................... 14

19 Tips and tricks .............................................................................................................................................. 14

20 Cleaning and maintenance .......................................................................................................................... 15

21 Technical data............................................................................................................................................... 16

Содержание 0116950

Страница 1: ...Manual_0116950_UL Dobson 20_en_title pdf 1 18 08 2020 13 56 03...

Страница 2: ...ant le code QR ou le lien correspondant NL Bezoek onze internetpagina via de volgende QR code of weblink voor meer informatie over dit product of de beschikbare vertalingen van deze gebruiksaanwijzing...

Страница 3: ...elements 7 10 Mounting the counter weights 8 11 Mounting and adjustment of the secondary mirror cage 9 12 Mounting the stray light shield 10 13 Mounting the viewfinder scope 10 14 Power supply for the...

Страница 4: ...coated Adjustable main mirror during observation Improved primary mirror cell with precise adjustment mechanism for optics adjustment 5 fans for quick temperature adjustment DeLuxe 2 5 HEXAFOC focuser...

Страница 5: ...is for personal use only It was developed for observing the night sky 5 General safety instructions DANGER Risk of blindness Never look directly at or near the sun with this device There is a RISK OF...

Страница 6: ...ibre components to direct sunlight for long periods of time Excessive ex posure to the sun may damage the material Do not expose the device to high temperatures and protect it from water and high humi...

Страница 7: ...uired not included in delivery 8 x 1 5V batteries type D 7 Choice of location Select a suitable location before installation and commissioning Place the unit on a stable level and vibration free surfa...

Страница 8: ...he threaded rods underneath so that there is a gap between the counter corner pieces and the main mirror box Illustration 3 Mounting the tube trusses WARNING Be extremely careful when unscrewing the c...

Страница 9: ...ror cage NOTICE All elements of the secondary mirror cage are pre assembled ex works Depending on the application the cage can be mounted in 90 steps This ensures a comfortable view when pulling or pu...

Страница 10: ...t shroud over the boom from the top to the bottom Not included in scope of delivery optionally available 13 Mounting the viewfinder scope Illustration 7 Mounting the viewfinder scope NOTICE The safety...

Страница 11: ...er telescope 1 Insert the eyepiece with the longest focal length into the eyepiece socket 2 Target a prominent object e g house gable church spire etc at a distance of approx 300 m with the telescope...

Страница 12: ...ew to release the eyepiece extension and adjust the focus with the focus wheel 17 Collimation adjustment of the optics This truss tube dobson has a mechanism for the subsequent adjustment of the entir...

Страница 13: ...center it with the two collimation screws on the back of the sec ondary mirror mount 2 If the reflection of the secondary mirror is not exactly in the center of the primary mirror adjust the primary m...

Страница 14: ...as far as possible On such nights it may not be possible to observe high magnifications Then use the observation time for large objects e g nebulae star clusters which can also be observed profitably...

Страница 15: ...night The surface should be firm and relatively level Although one can also observe from the cities a place further away is recommendable Really good sky conditions often only exist about 50 km away...

Страница 16: ...r with desiccant Depending on the model a case may already be included in the scope of delivery 21 Technical data 20 Truss Tube Dobson Item number 0116950 Design Construction Open truss tube design ca...

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Страница 20: ...000 Bresser France SARL Service apr s vente Explore Scientific P le d Activit s de Nicopolis 260 rue des Romarins 83170 Brignoles France Prix d un appel local depuis la France ou Belgique Service NL B...

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