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Care and Maintenance 

Cleaning the lenses or mirrors 

Do not clean the lenses or mirrors. Let the library know if they seem dirty.  Eyepieces can get dirty 
fairly quickly. Please don’t poke them, as it’s very easy to scratch the coatings.  However in the case 
of minor smudges, you might like to use the Lens pen, provided in the kit.  First brush away any dust 
with the Pen.  Then use the cleaning tip on the pen to clean the eyepiece.  Be sure to keep the dust 
caps on the telescope when not in use. 

Aligning the mirrors 

Please don’t make any adjustment to the telescopes mirrors.  If it seems the telescope is in need of 
adjustment please contact the library. 

Fog on the mirrors and eyepieces 

It is normal for dew to form on all parts of the telescope while stargazing.  The telescope is fitted 
with a fan unit to help minimize dew formation.  Eyepieces will often have dew form on them, and 
are unusable until they warm up and dry out. If the eyepiece fogs up, wrap your hands around it for 
a few moments. As it warms up the fog should disappear.  DO NOT wipe the lens with a tissue or 
cloth as it has special coatings on it that could be damaged if you do. 

At the end of the night, you can take the telescope inside, and leave unpacked.  This will allow any 
moisture that is in the telescope to dry out. 

 

Getting Started 

Assembling the telescope.  

 Please refer to the video for assembling the telescope.  It can be found on the library website: 

www.library.camden.nsw.go.au

 

or on the DVD included in the telescope kit. 

 

Using the telescope 

It is best to get a feel for the basic functions of the telescope during the day, before observing 
astronomical objects at night.  This way you will be able to use the equipment with ease when it is 
dark and make the most of the night sky.  Find a spot outdoors where you have plenty of room to 
move around the telescope, and where you have a clear view of an object or vista that is at least 
500m away. It is not critical that the base be exactly level, but it should be place on flat ground or 

Содержание Dobsonian

Страница 1: ...Manual Warning Never look directly at the Sun through any telescope or finder scope even for an instant as permanent eye damage could result Do not point the telescope at the Sun as parts will melt Ch...

Страница 2: ...imber base mount Special care needs to be taken while transporting the telescope Please plan your transport of the telescope to prevent it moving around and being damaged The optic tube is quite heavy...

Страница 3: ...arm up and dry out If the eyepiece fogs up wrap your hands around it for a few moments As it warms up the fog should disappear DO NOT wipe the lens with a tissue or cloth as it has special coatings on...

Страница 4: ...lease ensure it s adjusted to move smoothly but not be loose or unstable Viewing with eyeglasses If you wear eyeglasses you may be able to keep them on while you observe if the eyepieces have enough e...

Страница 5: ...images match up The finder scope alignment needs to be checked before every observing session Focusing the Finder scope If when looking through the finder scope the images appear somewhat out of focus...

Страница 6: ...ve warm air currents rising from them which distorts the image seen in the eyepiece You should also not observe out an open window from indoors for the same reason The best options would be out of tow...

Страница 7: ...nearby porch and streetlights and car headlights will spoil your night vision Tracking Celestial Objects The Earth is constantly rotating about its polar axis completing one full rotation every 24 ho...

Страница 8: ...mmended for small and bright objects like planets and double stars The moon also takes higher magnifications as well Deep sky objects however typically look better at medium or low magnifications This...

Страница 9: ...our telescope Lunar craters Marias and even mountain ranges can all be clearly seen from an average distance of 350 000kms away With its ever changing phases you ll get a new view of the Moon every ni...

Страница 10: ...ost luminous object in the sky excluding the Sun and the Moon It is so bright that sometimes it is visible to the naked eye during full daylight Ironically Venus appears as thin as a crescent not a fu...

Страница 11: ...pollution Take plenty of time to let your eyes adjust to the darkness Do not expect these objects to appear like the photographs you see in books and magazines most will look like dim gray smudges...

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