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“terminator”).   A  full Moon is too bright and 
devoid of surface shadows to yield a pleasing 
view. However it is the best time to trace out 
crater rays.  Make sure to observe the Moon when
it is well above the horizon to get the sharpest 
images. 

B. The Planets 

The planets don’t stay put like the stars, so to find
them you  should refer to Sky Calendar at our 
website (OrionTelescopes.com), or to charts 
published monthly in Astronomy, Sky & 
Telescope, or other astronomy magazines. See 
also the web site list at the back of these 
instructions.  Venus, Jupiter,  Saturn and Mars are 
the brightest objects in the sky after the Sun and 
the Moon. The TableTop Telescope is capable of 
showing you these planets in some detail. Other 
planets may be visible but will likely appear star-
like. Because planets are quite small in apparent 
size, using higher magnification is justified in 
viewing these. Not all the planets are generally 
visible at any one time.

JUPITER:

 The largest planet, Jupiter, is a great 

subject for observation. You can see the disk of 
the giant planet and watch the ever-changing 
positions of its four largest moons – Io, Callisto, 
Europa, and Ganymede.  Also these moons pass 
in front of Jupiter (transit), casting their shadows 
on the planet, duck behind Jupiter (occultation), 
or are eclipsed in Jupiter's shadow.  These events 
occur almost daily.  See the Appendix for a 
website where these times may be found.

SATURN:

 The ringed planet is a breathtaking 

sight when it is well positioned. The tilt angle of 
the rings varies over a period of 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 for a good view. You will probably see 
a bright “star” close by, which is Saturn’s 
brightest moon, Titan.

VENUS:

 At its brightest, Venus is the most 

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 a thin crescent, not a 
full disk, when at its peak brightness. Because it 
is so close to the Sun, it never wanders too far 
from the morning or evening horizon. No surface 
markings can be seen on Venus, which is always 
shrouded in dense clouds.

MARS:

  At it's closest some detail on the surface 

of Mars can be seen.  One of the polar caps can 
usually be seen.  These are mostly carbon dioxide.
Other surface features will have to wait until Mars
is closest to the Earth which occurs on average of 
every 26 months.  The next two closest Mars 
dates are May 20, 2016, and July 31, 2018.  The 
2018 date is the closest Mars will get to the Earth 
since it's closest of recorded history August 27, 
2003.  Mars during about 4 months centered on 
the indicated dates will be the best for viewing.

C. The Stars

Stars will appear like twinkling points of light. 
Even powerful  telescopes cannot magnify stars to
appear as more than a point of light. You can, 
however, enjoy the different colors of the stars 
and locate many pretty double and multiple stars. 
The gorgeous two-color double star Albireo in 
Cygnus is a favorite. Defocusing a star slightly 
can help bring out hints of color.  See the 
Appendix for a list.

D. Brighter Deep-Sky Objects

 - 9 -

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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