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EN

 

What to look for in the sky: 

 
The moon 
The  moon  is  the  easiest  target  to  find  in  the  night.  When  it  is  in  the  full 
position,  when  the  entire  face  is  lit,  then  it  bathes  the  night  with  a  silvery 
light  washing  out  the  rest  of  the  sky  from  all  but  the  brightest  objects.  The 
best time to view the moon is actually not when it is full by rather anytime up 
to the first quarter, this is when the face appears to be half lit up.  
The terminator on the moon, the dividing line between dark and light, shows 
the best features such as craters and mountains. 
 
The planets 
 
The  planets  are  our  solar  system  companions.  These  range  in  size  from 
moon size rocky bodies to giant gas balls which could hold 1000 earths. To 
find  the  planets  requires  some  information  as  to  when  they  are  visible.  An 
astronomy magazine such as SkyNews or Sky and Telescope will give you 
the  locations  of  the  planets  from  month  to  month.  Most  people  who  have 
looked up at night have probably seen some planets but did not realize it. A 
planet,  when  it  is  well  clear  of  the  horizon  will  not  twinkle  as  do  the  stars. 
They are resolved by the eye as tiny balls as opposes to the stars which are 
infinitely small points of light. The easiest planets to view are Venus, Mars, 
Jupiter  and  Saturn,  Uranus  and  Neptune.  Mercury  is  an  object  to  look  for 
but  it  is  usually  below  the  horizon  and  often  is  a  challenge  to  find.  Pluto  is 
too small for most telescopes below 10'‘ so do not worry about finding it at 
this time.  
Each  of  the  planets  has  its  own  interesting  views.  Venus  is  covered  with 
clouds.  So  all  we  see  is  an  extremely  bright  light,  the  brightest  next  to  the 
moon.  However  it  goes  through  phases  like  our  moon.  In  other  words  the 
planets  surface  will,  as  it  travels  around  the  sun,  appear  to  have  different 
amounts  of  it  lit  up.  This  gives  the  planet  varying  crescent  shapes,  as  if  a 
bite were taken out of it. 
Beyond  our  solar  system  there  lies  a  multitude  of  objects  to  be  found. 
Galaxies, nebulae and star clusters abound. 
 
 
 
 
 
 
 

 

Summary of Contents for 400/70

Page 1: ... www seben com manuals Vous pouvez télécharger la notice en français sur http www seben com manuals Per il download delle istruzioni in italiano cliccate qui http www seben com manuals Puede descargar las instrucciones en español aquí http www seben com manuals www ORBINAR com Seben GmbH Ollenhauer Str 73 13403 Berlin Deutschland ...

Page 2: ...l prism 5 Focuser 6 Mount lock knob 7 Aiming Control and lock 8 Tripod legs 9 Finder scope Warning Do not aim your telescope at the sun or anywhere near the sun Instant or irreversible damage can occur including blindness Do not let children use any telescope without adult supervision at any time the sun is above ...

Page 3: ...he telescope tube has a mounting tab on its underside Place this tab into the slot on top of the tripod Tighten the knurled knob on the tripod head to hold the tube tightly to the tripod Screw the aiming control arm into the threaded socket at the rear of the mount Insert the diagonal prism into the end of the telescope tube Insert one eyepiece into the diagonal prism Remove the dust cap from the ...

Page 4: ...ions und distortions If the window is open the moving air currents of different temperatures will cause distortions Let your telescope adjust to the outside temperature Your telescope will perform much better if the lenses and the air inside the tube are all the same temperature as the outside air This process may take up to 1 2 hour if the temperature difference between inside and outside is extr...

Page 5: ...s bright points Once you have located an object and the view is clear you may wish to change to the high power eyepiece You will notice that your object looks bigger but not as bright as seen with the 20mm eyepiece This is normal If the viewing conditions are not good the high power image may not appear sharp or stable If this happens switch back to achieve higher power by inserting 3x barlow lens...

Page 6: ... 3 Once the moisture is gone then replace the dust caps 4 If you wish to remove dust from the lenses or mirrors you first should try using a can of filtered compressed air Remove the dust cap and the dew shield in the case of the refractor style of telescope or take the mirror cell out of the reflecting type Once you are able to freely blow across the surface of the optics then begin by first poin...

Page 7: ...th to month Most people who have looked up at night have probably seen some planets but did not realize it A planet when it is well clear of the horizon will not twinkle as do the stars They are resolved by the eye as tiny balls as opposes to the stars which are infinitely small points of light The easiest planets to view are Venus Mars Jupiter and Saturn Uranus and Neptune Mercury is an object to...

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