background image

Some Bright Deep-Sky Objects

Even the brightest deep-sky objects may not be 
visible in the EZ View finder, so the telescope is 
pointed to the object using nearby stars as guides.

Most of the brighter deep-sky objects are mostly 
known by their Messier Catalog number.  Charles 
Messier was a French astronomer around the time
of the American Revolution, and hasd a telescope 
with a smaller diameter than the TableTop 
Telescope.  He was searching for comets, which 
when they first appear look like tiny fuzzy blobs.  
But comets move.  When he found a fuzzy blob 
that didn't move against the background of the 
sky, he marked it down with a number and 
location, so he wouldn't bother with it if he ran 
across it again.  Many of these objects also have 
nicknames.

The Beehive Cluster, M44

 is a nearby star 

cluster easily visible as a star cluster in 
binoculars.  It is a springtime object.  It's a faint 
fuzzy spot to the naked eye.  It's rather large, so it 
will fill the field of the lowest power 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 between 
Cancer and Leo.  It was removed from the chart.  
Also distant star cluster M67 in on the chart.  It is 
small and faint with a lot more stars than the 
Beehive and will be a challenge to spot.

The Ring Nebula, M57

 is small and cannot be 

seen with the naked eye or with binoculars, but it 
is still reasonably easy to find.  A nebula is a 
cloud of gas and/or dust.  M57 is in the 
constellation of Lyra the harp, a constellation 
visible in summer and early autumn.  Point the 
telescope's finder about half way between the two 
southern stars of the parallelogram of stars that's 
the harp's body, Sulafat and Sheliak.  Move the 
telescope in a small spiral enlarging the search 
pattern by half the field of view at a time.  The 
Ring Nebula will appear a ghostly small circular 
glow.  Once centered, more magnification may be
used.  The center will be darker than the edge.  
Inside is a very faint invisible star that blew out 
its outer layers of gas into a smoke ring near the 
end of it's life.

 - 13 -

Содержание StarMax 90

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 16: ......

Отзывы: