Troubleshooting - Bresser National Geographic Bedienungsanleitung

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)
h
Right Ascension: 05 35
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)
h
Right Ascension: 18 53
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
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 reason-
ably good weather, we can see this object well, even with low mag-
nification.

2. Troubleshooting:

Problem:
No picture
Blurred picture
No focus possible
Bad picture quality
16
m
(hours : minutes)
m
(hours : minutes)
m (hours : minutes)
Solution:
Remove dust protection cap
from the objective opening.
Adjust focus using the focus wheel.
Wait for temperature to balance out.
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 card-
board. Contact your local waste-disposal 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 disposal
from your local waste-disposal service or envi-
ronmental authority.
Warranty and Warranty Term Extension
The warranty term is two years from the date of purchase. Please keep
your proof of purchase. Register at www.bresser.de/warranty and fi ll
out a brief questionnaire to get your warranty term extended to fi ve
years. Registration must be completed within three months of pur-
chase (date of receipt) to validate the warranty. If you register thereaf-
ter, the warranty term will not be extended. If you have problems with
your device, please contact our customer service fi rst. Do not send
any products without consulting us fi rst by telephone. Many problems
with your device can be solved over the phone. If the problem oc-
curred after the warranty ended or it is not covered by our warranty
terms, you will receive a free estimate of repair costs.
Service Hotline: +49 (0) 2872 - 80 74-210
Important for any returns:
Please make sure to return the device carefully packed in the original
packaging in order to prevent damage during transport. Also, please
enclose your receipt for the device (or a copy) and a description of the
defect. This warranty does not imply any restriction of your statutory
rights.
Your dealer: ...........................................................................................
Art. No.: .................................................................................................
Description of problem: .........................................................................
...............................................................................................................
...............................................................................................................
...............................................................................................................
Name: ....................................................................................................
Street: ....................................................................................................
City/Postcode: .......................................................................................
Telephone: .............................................................................................
Date of purchase: ..................................................................................
Signature: ..............................................................................................