BRESSER 9071000 Telescope Instruction Manual

: June 6, 2024
: BRESSER

Table of Contents

9071000 Telescope
General Information
General Warning
Part I—Set Up
Part II—Handling
10. Accessories
Notes on Cleaning
Part III—Appendix
DISPOSAL
WARRANTY & SERVICE
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

9071000 Telescope

Telescope

Instruction Manual

CAUTION:
Never attempt to observe the sun with this telescope.
Make sure children do not attempt to observe the sun with the telescope.
Observing the sun directly, even for a short time, may cause blindness.
Packing materials, like plastic bags and rubber bands, should be kept out of the reach of children.

No.1

Telescope

Accessories may vary depending on the model.

Accessories

General Information

About This Instruction Manual
Please read the safety instructions in this manual carefully. To avoid damage to the unit and the risk of injury, only use this product as described in the manual. Keep the instruction manual handy so that you can easily look up information on all the functions of your telescope.

CAREFUL
You will find this symbol before every section of text that deals with the risk of minor to severe injuries resulting from improper use.

ATTENTION
You will find this symbol in front of every section of text that deals with the risk of damage to property or the environment.

Intended Use
This product is intended only for private use. It was developed for the magnified display of things in nature.

General Warning

RISK OF BLINDNESS
Never use this device to look directly at the sun or in the direct proxim-ity of the sun. Doing so may result in a risk of blindness.

CHOKING HAZARD
Children should only use the device under adult supervision. Keep packaging material, like plastic bags and rubber bands, out of the reach of children, as they pose a choking hazard.

FIRE RISK
Do not place the device, particularly the lenses, in direct sunlight. The concentration of light could cause a fire.

ATTENTION
Do not disassemble the device. In the event of a defect, please contact your dealer. The dealer will contact the Service Centre and can send the device in to be repaired, if necessary.

Do not expose the device to high temperatures.

Privacy Protection
This device is intended only for private use. Please heed the privacy of other people. Do not use the device to look into apartments, for example.

Accessories may vary depending on the model.

Parts (No. 1-3)

Telescope tube
Viewfinder scope
Adjusting screws (viewfinder)
Barrel opening
Objective
Eyepiece connection tube
Focus wheel
Tube rings
Tripod head.
Accessory tray
Adjusting screws (tripod)
Fixation bracket (accessory tray)
Tripod legs
Flexible shaft (right ascension axis)
Flexible shaft (declination axis)
Tripod brace
Incline plate
Eyepieces
Diagonal mirror
Erecting lens

Parts (No. 15): Multi-Purpose Mount

A. Vertical clamp
B. Incline plate
C. Declination axis
D. Flexible shaft (right ascension axis)
E. Flexible shaft (declination axis)
F. Focus wheel

Part I—Set Up

1. General/Location
Before you begin construction, choose a suitable location for your telescope. It is best to build this telescope in a place where you have a clear view of the skies, a stable footing and sufficient space around you.
Before beginning construction, remove all the parts from the packaging, and, using the diagram, check to make sure no parts are missing.

NOTE
Important: Only hand-tighten screws. Do not overtighten.

2. Tripod
The tripod legs are preinstalled and already connected to the tripod head (No. 1, 9) and tripod brace (No. 1, 16). Remove the tripod from its packaging and place it upright, with the feet at the base. Take two of the legs and carefully pull them apart until they are in the fully open position. The entire weight of the tripod rests on one leg during this procedure. Then set the tripod upright again.

Now extend each individual tripod leg to the desired length (No. 4) by loosening the fastening clips (No. 4, X). Tighten the fastening clips to hold the legs at the desired length, and place the tripod on a hard, flat surface.

HINT
A small spirit level placed on the accessory tray (No. 1, 10) may help you set up your telescope so that it’s level.

3. Accessory Tray
The accessory tray (No. 1 and 3, 10) should be attached to the center of the tripod brace (No. 1, 16) with the flat side down. The center hole in the tray should be fitted over the tripod brace retaining fittings. Mount the tray in place by turning it clockwise 60° (No. 5).

4. Telescope Tube
To mount the telescope tube (No. 1, 1) you undo the screw (No. 6, X) on the tube ring (No. 1 and 2, 8) and open up the ring. Now you place the tube in the centre of ring and close the ring up. Now secure the mounting by tightening the screw. Position the tube, including the ring, with the objective opening facing north, and place it on the tripod head (No. 1, 9). Fasten the tube to the tripod head using the clamping screw (No. 7, X).

5. Eyepieces
Three eyepieces (No. 1 and 2, 18) and a diagonal mirror (No. 1 and 2, 19) are supplied with this telescope. The three eyepieces allow you to decide which magnification you want for your telescope. Before you insert the eyepiece and the diagonal mirror, you must remove the dust protection cap from the eyepiece connection tube (No. 1, 6). Loosen the screw (No. 8, X) on the eyepiece connection tube and insert the diagonal mirror. Retighten the screw (No. 8, X) on the eyepiece connection tube.

Repeat the same process on the diagonal mirror screw (No. 9, X) and insert 20 mm eyepiece in the diagonal mirror and retighten.

Make sure that the eyepiece is pointing vertically upward. If it is not, loosen the screw (No. 8, X) on the eyepiece connection tube and rotate the diagonal mirror into the vertical position.

Risk of blindness
Never use this device to look directly at the sun or in the direct proximity of the sun. Doing so may result in a risk of blindness.

6. Viewfinder Assembly and Alignment
The viewfinder scope (No. 1 and 2, 2) and its holding device are preassembled. Push the foot of the viewfinder scope holding device completely into the base on the telescope tube (No. 10). The holding device will click into place. Make sure that the viewfinder scope lens (No. 10, X) faces the barrel opening (No. 1, 4).

There are two black clamping screws on the holding device (No. 1, 3) plus a silver spring-loaded counter screw. Tighten the black clamping screws until you feel resistance. This affixes the viewfinder scope barrel in place.
Before you start any observation, it is essential to adjust the viewfinder scope. The viewfinder scope and main telescope must be positioned identically in order to make observations with your telescope.

HINT
Insert the 20 mm eyepiece in the diagonal mirror and align the main telescope with an easily identifiable terrestrial object (No. 11, A). The object should be at least 200–300 metres away. Position the telescope so that the object appears in the center of the eyepiece’s field of vision. The image should appear vertical but inverted.

Follow the hint above. Once the telescope is aligned, look through the viewfinder scope. The image should be vertical and not inverted. To align the viewfinder scope, turn one of the two adjustment screws (No. 1, 3) until the image appears exactly the way it does through the telescope’s eyepiece (No. 11, B).

To focus the viewfinder scope, turn the viewfinder’s front lens barrel (No. 10, X) left or right until the picture appears sharp and clear.

7. Protection Caps
In order to protect the inside of your telescope from dust and dirt, the barrel opening (No. 1 and 12, 4) is protected by a dust protection cap (No. 12, X). Before you begin observing with your telescope, remove the cap from the opening.

8. Flexible Shafts
To ease precise adjustment of the declination and right ascension axes, install the flexible shafts (No. 1 and 3, 14 and 15) in the holding devices of both axes provided for the purpose (No. 13, X and Y).
The long flexible shaft should be mounted parallel to the telescope barrel (No. 1, 14). Secure it in place with the provided clamping screw in the axis notch. The short flexible shaft (No. 1, 15) should be mounted laterally. Secure it in place with the provided clamping screw in the axis notch.
Your telescope is now ready for use.

Part II—Handling

Telescope Mount
Your telescope mount is of a new type that allows you to make two different types of observations:

A. Azimuth, ideal for terrestrial use
B. Parallactic, ideal for celestial observation

A. In azimuth use:
The telescope is moved horizontally and vertically.

Undo the polar vertical clamping screw (No. 14a, X) and lower the incline plate (No. 1, 17; No. 15, B) until it is horizontal (all the way to the stop). Retighten the polar vertical clamping screw.
Undo the vertical clamp (No. 15, A) and move the telescope until it horizontal. Then retighten the vertical clamp. The telescope can now be moved horizontally and vertically using the flexible shafts (No. 1, 14 and 15; No. 14, D and E).

B. In parallactic use:

2. Night Use
A dark site is very important for observation at night as light interferes with observation focus and detail visibility.
Allow your eyes to adjust to the darkness after leaving a lighted room. After about 20 minutes you can begin celestial observation.

Do not use the telescope within an enclosed space. Position your telescope and accessories in place outside about 30 minutes before observing to ensure temperature compensation in the telescope tube. Make sure the telescope is on a flat, stable surface.

3. Alignment—Basic Siting
Undo the polar vertical clamping screw (No. 14a X) and move the incline plate (No. 1, 17; No. 15, B) to the latitude of your location using the latitude adjust-ment rod as a rough guide. Turn the tripod so that the N mark faces north. The top of the incline plate should also face north (No. 14b). The latitude adjust-ment rod (No. 14a, Y) should point south.

4. Setting Latitude
Determine the latitude of your location using a street map, atlas or the Internet. Germany is between 54° (Flensburg) and 48° (Munich) degrees of latitude.
Undo the polar vertical clamping screw (No. 14a, X) and move the incline plate (No. 1, 17; No. 15, B) until the number on the latitude adjustment rod (No. 14a, Y) matches that of your location.

5. Final Alignment
Turn the declination axis (No. 15, C), including the telescope, 90°.
Place the tube with the correct orientation into the holder and tighten the clamp-ing screw. The telescope eyepiece should now point to the ground, and the lens should point to the sky. Undo the polar vertical clamping screw and the declina-tion axis in that order, and position the telescope so that the polar star appears in the center of the eyepiece’s field of vision (No. 17). Then retighten the polar vertical clamping screw and the declination axis.

Once you make this alignment, do not move or adjust the telescope, or it will become misaligned. The telescope is now correctly aligned. This procedure is essential so you can track celestial objects.

6. Tracking and Observation Positioning
Tilt the telescope 90° using the declination axis (No. 15, C). Then turn the tel-escope 180° to the right or left, until the objective lens points skyward.

Tighten the clamping screws on the two flexible shafts (No. 13, X and Y) so that you can track stars using these flexible shafts. Manual use of the flexible shaft along the right ascension axis (No. 15, D) compensates for the Earth’s rotation, so that objects always remain visible in the eyepiece.

If you want to track a different celestial object than the one you’re currently focused on, undo the clamping screws on the flexible shafts (No. 13, X and Y), reposition the telescope, and then retighten the clamping screws. You can then use the flexible shafts to do fine adjustments to the telescope’s position.

HINT
The latitude of your observation site can be found in maps or on the Internet. A good source of information is www. heavens-above.com. After checking “anonymous user” > “select” you may choose your country and city.

7. Viewfinder
The telescope is now roughly aligned and adjusted.
In order to obtain a comfortable observation position, you should loosen the screws on the tube ring (No. 1, 8), so that you can rotate the telescope tube. Bring the eyepiece and the viewfinder into a position that makes it comfortable for you to look through both.

Fine alignment is done using the viewfinder scope. Look through the viewfinder scope and centre Polaris (No. 16) in the middle of the crosshairs (No. 17).

For fine adjustments, use the flexible shafts along the right ascension axis (No. 15, D) and the declination axis (No. 15, E).

8. Observation
After you have located the pole star in the viewfinder scope, if you look through the eyepiece, the pole star will be visible.

If necessary, you can use the flexible shafts to align the star more exactly, just as you can adjust the image sharpness by using the focus wheel (No. 15, F).

Furthermore, you can now, by changing the eyepiece, increase the magnifica- tion. Note that the magnification of the stars can hardly be seen.

HINT
Eyepieces enlarge the picture of the telescope’s prime focus. The less the eyepiece’s focal lengths is, the stronger the magnification is. So various eyepieces are needed to reach different magnifications. Begin every observation with a low magnification (20 mm eyepiece), and increase the magnification until you reach the desired picture size.

9. Find a Star
Initially it will be difficult for you to find your bearings in the firmament, since the stars and the constellations are always moving, and according to the season, date and time, their position in the heavens will change. The pole star (Polaris) is the exception. It is a fixed star and the starting point for all star maps.

When you first start observing, you should look at some well-known constella- tions and star groups that are visible all year round. Remember that the position of even constantly visible constellations shifts throughout the year.

If you have aligned your telescope accurately to observe one of these stars, you will find that it vanishes from your field of view after a few minutes. To even out this effect, you must turn the flexible handle (No. 15, D) along the declination axis and your telescope will follow the trajectory of this star.

10. Accessories

Your telescope comes with three eyepieces (No. 2, 18).

By interchanging the eyepieces, you can alter the magnification of your tel- escope.
Formula for calculating magnification:
Focal length (Telescope) ÷ Focal length (Eyepiece) = Magnification
Examples:

Examples

The diagonal mirror (No. 2, 19) causes the image you view to be horizon-tally reversed. You should use the diagonal mirror whenever making terrestrial observations.

In order to see an upright and sidecorrect picture, you may use the erecting lens. Loosen the screw (No. 8, X) and remove the diagonal mirror from the eyepiece connection tube (No. 1, 6). Now put the erecting lens (No. 2, 20) in place and retighten the screw. Finally, put an eyepiece in place and tighten the screw (No. 9, X).

11. Dismantling
After your interesting and successful observation, it is recommended that you store the entire telescope in a dry, well-ventilated 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 barrel opening and the eyepiece connection. Also, you should stow all the eyepieces and optical accessories into their corresponding receptacles.

HINT
The erecting lens is not recommended for astronomical observations. Only use the diagonal mirror here.
To observe landscapes, you may use the erecting lens.

Notes on Cleaning

Clean the eyepieces and lenses only with a soft, lint-free cloth, like a microfibre cloth. To avoid scratching the lenses, use only gentle pressure with the clean-ing 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 humid-ity, let the device acclimatize for a short period of time, so that the residual moisture can dissipate before storing. Remove the dust protection cap 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 beginning of the manual show what the objects will look like through your telescope’s eyepiece.

The Moon (No. 20)
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 con- stantly 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. 21)
Right Ascension: 05h 35m (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. 22)
Right Ascension: 18h 53m (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 magnificent features of the Northern Hemisphere’s summer sky. Recent studies have shown that it is prob- ably comprised of a ring (torus) of brightly shining material that surrounds the central star (only visible 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. 23)
Right Ascension: 19h 59m (hours : minutes)
Declination: +22° 43′ (degrees : minutes)
Distance: 1,360 light years from Earth

The Dumbbell Nebula (M27) was the first planetary nebula ever discovered.

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 magnification.

2. Troubleshooting

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 in the viewfinder scope, but not through the telescope.
Adjust viewfinder scope (See Part I, Section 6).

Despite using diagonal mirror, the picture is crooked.
The diagonal mirror should be vertical in the eyepiece connection.

DISPOSAL

Dispose of the packaging materials properly, according to their type, such as paper or cardboard. 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 environmental authority.

WARRANTY & SERVICE

The regular guarantee period is 5 years and begins on the day of purchase. You can consult the full guarantee terms and details of our services at: www.bresser.de/warranty_terms.