Bresser 9618761000000, Instruction Manual

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CONSTELLATION LEIER / M57
Right Ascension (R.A): 18:51.7 (hours : minutes)
Declination (DEC): 32:58 (degrees : minutes)
Distance: 4.100 million light years
The famous Ring Nebula M57 in the constellation Lyra is often considered to be the prototype of a planetary nebula; it is one of the splendours
of the northern hemisphere summer sky. Recent studies have shown that it is most likely a ring (torus) of brightly glowing matter surrounding
the central star (visible only with larger telescopes), rather than a spherical or ellipsoidal gas structure. If the Ring Nebula were viewed from
the side plane, it would resemble the Dumbell Nebula M27. We are looking right at the pole of the nebula for this object.
CONSTELLATION VIXEN / M27
Right Ascension (R.A): 19:59.6 (hours : minutes)
Declination (DEC): 22:43 (degrees : minutes)
Distance: 1,250 million light years
The Dumbbell Nebula M27 or Dumbbell Nebula in the Vixen was the first planetary nebula ever discovered. On July 12, 1764, Charles Messier
discovered this new and fascinating class of objects. We see this object almost exactly from its equatorial plane. If the Dumbell Nebula were
seen from one of the poles, it would probably have the shape of a ring and resemble the sight we know from the Ring Nebula M57.
This object can already be seen well in reasonably good weather conditions at low magnifications.
CLEANING & MAINTENANCE
• Clean the lenses (eyepieces and/or objective lenses) only with a soft and lint-free cloth (e.g. microfibre cloth). To avoid scratching the lenses,
use only gentle pressure with the cleaning cloth.
• 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, particularly in high humidity, let the device acclimatize at room temperature for a short
period of time, so that the residual moisture can dissipate.
STORAGE
• Store it in the shipping carton if it will not be used for a long time.
TROUBLESHOOTING
Faults: Help
No image Remove the dust cap from the lens opening.
Blurred picture Focusing with the focus wheel
Focusing not possible Wait for temperature equalisation (approx. 30 minutes)
Bad image Never watch through a pane of glass
Observation object visible in the viewfinder but not in
the telescope
Adjust the viewfinder
"Crooked" image despite the diagonal mirror The diagonal mirror must be aligned vertically to the eyepiece extension.