16
Protect the device from dust and moisture. After use, particularly in
high humidity, let the device acclimatize for a short period of time, so
that the residual moisture can dissipate before storing. Remove the
dust cover and store it in the included bag during use.
Part III—Appendix
1. Possible Observation Targets
The following section details several interesting and easy-to-find
celestial objects you may want to observe through your telescope.
The pictures at the end of the manual show what the objects will look
like through your telescope's eyepiece.
The Moon (No. 32)
The moon is Earth's only natural satellite.
Diameter:
3,476 km
Distance:
384,400 km from Earth (average)
The moon has been known to humans since prehistoric times. It is
the second brightest object in the sky, after the sun. Because the
moon circles the Earth once per month, the angle between the Earth,
the moon and the sun is constantly changing; one sees this change
in the phases of the moon. The time between two consecutive new
moon phases is about 29.5 days (709 hours).
Constellation Orion: The Orion Nebula (M42) (No. 33)
Right Ascension: 05
h
35
m
(hours : minutes)
Declination:
-05° 22' (degrees : minutes)
Distance:
1,344 light years from Earth
Though it is more than 1,344 light years from Earth, the Orion Nebula
(M42) is the brightest diffuse nebula in the sky. It is visible even with
the naked eye and is a worthwhile object for telescopes of all types
and sizes. The nebula consists of a gigantic cloud of hydrogen gas
with a diameter of hundreds of light years.
Constellation Lyra: The Ring Nebula (M57) (No. 34)
Right Ascension: 18
h
53
m
(hours : minutes)
Declination:
+33° 02'
(degrees : minutes)
Distance:
2,412 light years from Earth
The famous Ring Nebula (M57) in the Lyra constellation is often
viewed as the prototype of a planetary nebula. It is one of the mag-
nificent features of the Northern Hemisphere's summer sky. Recent
studies have shown that it is probably comprised of a ring (torus)
of brightly shining material that surrounds the central star (only vis-
ible with larger telescopes), and not a gas structure in the form of a
sphere or an ellipse. If you were to look at the Ring Nebula from the
side, it would look like the Dumbbell Nebula (M27). When viewed
from Earth, we are looking directly at the pole of the nebula.
Constellation Vulpecula (Little Fox):
The Dumbbell Nebula (M27) (No. 35)
Right Ascension: 19
h
59
m
(hours : minutes)
Declination:
+22° 43' (degrees : minutes)
Distance:
1,360 light years from Earth
The Dumbbell Nebula (M27) was the first planetary nebula ever dis-
covered. On 12 July 1764, Charles Messier discovered this new and
fascinating class of objects. We see this object almost directly from
its equatorial plane. If we could see the Dumbbell Nebula from one
of its poles, we would probably see the shape of a ring, something
very similar to what we know as the Ring Nebula (M57). In reasonably
good weather, we can see this object well, even with low magnifica-
tion.
2. Troubleshooting:
Problem: Solution:
No picture
Remove dust protection cap
from the objective opening.
Blurred picture
Adjust focus using the focus wheel.
No focus possible
Wait for temperature to balance out.
Bad picture quality
Never observe through a glass surface.
Object is visible
Adjust viewfinder scope
in the viewfinder scope,
(See Part I, Section 8).
but not through the telescope.
Despite using
The diagonal mirror
diagonal mirror,
should be vertical in
the picture is
the eyepiece connection.
crooked.
DISPOSAL
Dispose of the packaging materials properly,
according to their type, such as paper or
cardboard. Contact your local waste-dispo-
sal service or environmental authority for
information on the proper disposal.
Please take the current legal regulations into
account when disposing of your device. You
can get more information on the proper dis-
posal from your local waste-disposal service
or environmental authority.
WARRANTY & SERVICE
The regular guarantee period is 2 years and begins on the day of
purchase. To benefit from an extended voluntary guarantee period as
stated on the gift box, registration on our website is required.
You can consult the full guarantee terms as well as information on
extending the guarantee period and details of our services at
www.bresser.de/warranty_terms.
