Notes On Cleaning - Bresser EQ Serie Bedienungsanleitung

Rectascension (Fig. 16 M) a measured distance of a star from
the heavens equator in sidereal (star) time. The vernal equinox is
the point where the ecliptic meets the equator (Fig. 26 e) at the
beginning of spring. The value of the daily heavenly revolutions is
counted in the tempo of a 24 hour clock.
For more accurate information look at your star maps and
corresponding compartment-literature (special-accessories).
10. Accessories
Your telescope is supplied with a number of accessories as
standard (Fig. 2). Depending on model this may include the fol-
lowing.
10.1. Eyepieces
Change eyepieces to change your telescope's magnification.
Formula for calculating magnification:
Focal length of the telescope : focal length of the eyepiece = magnifi-
cation
Beispiele:
Focal length Focal length
telescope
eyepiece
700 mm 20 mm
700 mm 4 mm
10.2. Zenith mirror (refraction telescope only)
The zenith mirror reverses (Fig. 2,19) reverses the image (mirror
image) and is therefore used only for celestial observation.
10.3. Barlow lens
A Barlow increases magnification three times over.
10.3.1 Assembling and using refracting telescopes
If you use a refracting telescope the Barlow lens should only be
inserted in the zenith mirror (Fig. 13a, X). Remove the eyepiece
from the zenith mirror and replace it with the Barlow lens. Then
first insert the eyepiece with the greatest focal length and then
hand tighten the clamping screw to affix it in place (Fig. 24).
10.3.2 Assembling and using reflecting telescopes/Maksutovs
If you use a reflecting telescope please undo the clamping screw
on the eyepiece supports (Fig. 13b, X) and remove the eyepiece
from those supports. Then insert the Barlow lens straight in the
supports and hand tighten the clamping screw. Finally first insert
the eyepiece with the greatest focal length in the Barlow lens
and then fasten it in place with the clamping screw (Fig. 24).
10.4 Smartphone holder
Insert the eyepiece into the smartphone holder and tighten the
screw (Fig. 25, X) to the bracket firmly. Then set the smartphone
holder with the eyepiece into the eyepiece connection (6) or the
diagonal mirror (19) (refractor telescopes) and tighten the clamp-
ing screws (Fig. 25, Y) by hand firmly. Now start your smart-
phone camera app and press your smartphone on the suction
cups. Make sure that it is properly secured. The camera should
rest just above the eyepiece. Place the smartphone exactly over
the eyepiece, so that the image is exactly centered on your
display. It may be necessary to use the zoom function to fill out
the whole screen of your smartphone. The suction cups must be
dry, clean and free from all kinds of dust and dirt. We assume no
responsibility for dropped and broken smartphones due to incor-
rect handling.
11. Dismantling:
After a hopefully interesting and successful observation, it is rec-
ommended that you store the entire telescope in a dry, well aired
area. On some telescopes the tripod and mount can easily be
separated. The adjustments to the mount will remain intact.
Don't forget to put the dust-protection-caps onto the tube
opening and onto the eyepiece connection. Also, you should
stow all the eyepieces and optical accessories into their
corresponding receptacles.
Magnification Magnification
with 3x Barlow lens
35X 105X
175X 525X

NOTES on cleaning

Clean the lenses (eyepiece and/or lens) with a soft and lint-free
cloth only (e.g. microfibre). Do not apply excess pressure to the
cloth so as to avoid scratching the lenses.
To remove more stubborn dirt, moisten the cleaning cloth with an
eyeglass-cleaning solution and wipe the lenses gently.
Protect the device from dust and moisture! After use - in particu-
lar in situations of high humidity - let the device acclimatize for a
short period of time, so that the residual moisture can dissipate.
Part III – Appendix
1. Possible observation targets
In the following, we like to present to you a choice of very
interesting and easy-to-find celestial objects. On the depend-
ing pictures at the end of the manual you will see how they will
appear in the eyepiece of your telescope:
The moon (Fig. 31)
The moon is the only natural satellite of the earth.
Diameter: 3,476 km
Distance: 384,000 km (average)
The moon is well-known since thousands of years. He is the sec-
ond-brightest celestial object after the sun. Because the moon
circles around the earth, he changes periodically its
inclination to the sun; therefore we see changing phases. The
time for one complete lunation is 29.5 days (709 hours).
Constellation Orion: The great Orion nebula / M 42 (Fig. 32)
Right Ascension: 05h 33' (hours : minutes)
Declination: -05° 25' (Degrees : minutes)
Though it is 1,600 light years away, the Orion nebula (M 42) is
the brightest nebula object at the sky – visible even with naked
eyes and a worthwhile object for telescopes of all kinds and
sizes. It consists of a gigantic cloud of hydrogen gas with a
diameter of hundreds of light years, taking a field on the sky of
10°.
Constellation Lyra: The Ring Nebula / M 57 (Fig. 33)
Right Ascension: 18h 52'
Declination: +32° 58'
Distance: 4,100 light years
The famous Ring Nebula is often called the prototype of
planetary nebulae; he belongs to the northern hemisphere
summer sky's pieces of splendour. Recent investigations have
shown that he is a ring of light-emitting matter that surrounds its
central star (only visible in bigger telescopes). If one could look
onto its top, he would see a structure like the Dumbbell Nebular
/ M 27
Constellation Vulpecula (little fox):
The Dumbbell Nebula / M 27 (Fig. 34)
Right Ascension: 19h 59'
Declination: +22° 43'
Distance: 1,250 light years
The Dumbbell Nebula / M 27 was the first planetary nebula ever
found. On July 12th, 1764, Charles Messier discovered this new
and fascinating class of objects. We can see it directly from its
equatorial pane. If it could be viewed from top, we would appear
like the Ring Nebula / M 57. This Object can even be viewed at
average weather conditions at low magnifications.
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