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Under dark skies, you can observe some of the 
brighter deep-sky objects, including gaseous 
nebulae, open and globular star clusters, and a 
few galaxies. Even the brighter deep-sky objects 
are very faint, so it is important that you find an 
observing site well away from light 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.
Our eyes are not sensitive enough to see color in 
deep-sky objects except in a few of the brightest 
ones. But as you become more experienced and 
your observing skills get sharper, you will be able
to ferret out more and more subtle details and 
structure.  See the Appendix for a list.

Viewing Hints

Amateur astronomy can be an entertaining and 
educational activity for the entire family. 
Astronomy is also a serious scientific pursuit. As 
with any science you will achieve  the best results
by following some basic guidelines. These  
recommendations will assist you in getting the 
most out of  the telescope. This is just a sample of
suggested techniques; for more helpful tips please
visit the Learning Center  at 
OrionTelescopes.com.

Light Pollution

Most of us live where city lights interfere with 
our view of  the heavens. As our metropolitan 
areas have become more developed, the scourge 
of light pollution has spread, washing out many 
stars and nonstellar celestial objects from our  
sight. Faint deep sky objects become difficult or 
impossible to see through the murk of light 
pollution. Even bright nebulas  like the Orion and 
Lagoon Nebulas lose much of their delicate detail.

The Moon and planets are not affected; they 
require  steady air more than dark skies, so they 
remain good targets  for city-dwelling observers. 

The International Dark-Sky Association is waging
the fight against light pollution. The IDSA was 
founded in 1988 with the mission of educating the
public about the adverse impact that light 
pollution has on the night sky and astronomy. 
Through educational and scientific means, the 
nonprofit IDA works to raise awareness about the 
problem and about measures that can be taken to 
solve it. 

Do you need help dealing with local officials to 
control street or building lighting in your area? 
The IDA’s extensive support materials can show 
you how. Help preserve dark skies,  join the IDA 
today! For information, write to IDA, 3225 N.  
First Ave., Tucson, AZ 85719-2103 or visit their 
website:   www.darksky.org. The best way to 
avoid immediate problems with light pollution, 
however, is to take your telescope to where there 
are  dark skies. You will be amazed at how many 
stars you can see when you get away from the city
lights. 

Do You Wear Eyeglasses?

If you wear eyeglasses, you may be able to keep 
them on  while you observe. In order to do this, 
your eyepiece must have enough “eye relief” to 
allow you to see the entire field of view with 
glasses on. You can try looking through the 
eyepiece first with your glasses on and then with 
them off, to see if the glasses restrict the view to 
only a portion of the full field.

If the glasses do restrict the field of view, you 
may be able to observe with your glasses off by 
just refocusing the telescope to your unaided 
vision. If your eyes are astigmatic, images will 

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Summary of Contents for StarMax 90

Page 1: ...Library Edition TableTop Telescope Instruction Manual Orion StarMax 90 TableTop Maksutov Cassigrain Telescope Based on the Orion TableTop Telescopes Instruction Manual Donated by and...

Page 2: ...d nebulae The telescope will produce right side up terrestrial images however they will be mirror images as will the celestial images Telescope parts see illustrations 1 2 Zoom eyepiece Focal length i...

Page 3: ...on the object you re aiming at The use of the finder is discussed in the Getting Started section Telescope securing knob This allows the telescope to be positioned fore and aft in the mount for balan...

Page 4: ...and re tighten the Telescope securing knob Getting Started It s best to get a feel for the basic functions of the TableTop telescope during the day before observing astronomical objects at night This...

Page 5: ...ny position in the night sky from horizon to horizon Altitude Tension Adjustment When aiming the telescope in altitude you may find that the optical tube is either too hard to move or does not stay in...

Page 6: ...t s red dot should also appear in or near the field of view of the telescope s eyepiece at lowest power Alignment of the sight is easiest during daylight before observing at night 1 Without moving the...

Page 7: ...double images into your view If at all possible escape the light polluted city sky and head for darker country skies You will be amazed at how many more objects are visible in a dark sky Seeing and T...

Page 8: ...ters on the Moon the waxing and waning of Venus and many bright binary stars Deep sky objects are generally too faint at the magnifications employed by this Maksutov Cassigrain telescope but a few are...

Page 9: ...many years sometimes they are seen edge on next time 2025 while at other times they are broadside and look like giant ears on each side of Saturn s disk A steady atmosphere good seeing is necessary fo...

Page 10: ...light pollution Even bright nebulas like the Orion and Lagoon Nebulas lose much of their delicate detail The Moon and planets are not affected they require steady air more than dark skies so they rema...

Page 11: ...llations star charts or star atlases may be consulted or borrowed from the library With these you can learn the constellations and find your way around the sky A monthly star chart for the Grand Trave...

Page 12: ...Visible in the evening from late spring to late autumn Antares Scorpii is the bright red giant star in Scorpius It shows a yellow orange in telescopes However because it appears close to the horizon a...

Page 13: ...r eyepiece setting The Beehive is an open or galactic star cluster that are generally found in the band of the Milky Way unless they are close to us or very old For 2015 the planet Jupiter will be bet...

Page 14: ...ern side of the Keystone pattern of stars about one third the distance from the north star on that side to the south side It takes a much larger telescope to see individual stars The star cluster will...

Page 15: ...The first chart is one of the constellation of Orion The second image is the southern part of Orion showing the nebula better Orion is a winter constellation 15...

Page 16: ......

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