BRESSER 4511609 Telescopes with AZ Mount Instruction Manual

: June 5, 2024
: BRESSER

BRESSER 4511609 Telescopes with AZ Mount 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.

Accessories may vary depending on the model.

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.

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 which 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 proximity 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.

All parts (No. 1-3)
PRODUCT PARTS

Telescope tube
Finder scope or LED finder scope
Adjusting screws (finder scopes only)
Barrel opening
Objective
Eyepiece connection
Focus wheel
Screws (main tube)
Mount
Accessories tray
Adjusting screws (tripod)
Fastening screws (tray)
Tripod legs
Fastening screws (finder scope)
Screws (tripod head)
Tripod head
Vertical fine adjustment
Eyepieces
Diagonal mirror
Erecting lens
Barlow lens
Mountings (accessory tray)

Part I – Construction

General/Location

These instructions detail the assembly and use of refracting and reflecting telescopes with alt-azimuthal mountings. Parts of these instructions contain differing instructions for the differing telescope models.

Before you begin construction, choose a suitable location for your telescope. It is best to build this appliance 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 secure screws finger tight. Do not overtighten screws.

Tripod legs

First pull the centre of the three legs (13) out to the desired length. Then screw the fastening screws (11) into the legs and tighten them **(No. 5).

**

Mounting and tripod

Securely fasten the mount (9) and tripod together. Insert the mount into the tripod head (16), and push the screws (15) with washers through the drilled holes in the tripod head and the mount fasteners (No. 6). Add a second washer and a butterfly nut to each screw, and tighten the nuts to permanently affix the mount to the tripod.

NOTE
Make sure the fastening devices (22) for the accessories tray on the tripod legs face inward.

HINT
Place a small spirit level on the accessories tray to help you level your telescope during set up.

Accessories tray

Hold the accessories tray (10) against the fastening devices (22) on the tripod legs. Screw the three butterfly screws (12) from below through the fastening devices in the tray (No. 7).

Tube

Hold the telescope’s main tube (1) as shown, in the middle of the alt- azimuth mount (9), and screw the screws (8) into the tube from both sides (No. 8).
Tube

Vertical fine adjustment

To mount the vertical fine adjustment (17), first push the adjustment rod through holding device (X) on the mount (No. 9a).

Then undo the screw (Y) for the adjustment rod, and insert it on the other end of the rod. Then tighten it in place (No. 9b).

Important: Do not overtighten the vertical fine adjustment fastening screw. If you do, the main tube will not be vertically adjustable.

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.

Assembling the finder scope/LED finder scope

Note: The LED finder scope’s battery is safeguarded against discharge with plastic foil when shipped. The foil must be removed before first use (No.1d).

Finder scope installation (type I):
Finder scope with threaded mounting

The finder scope and finder scope mount (No. 1a, 2) are included in the packaging.

Remove the finder scope mount fastening screws on the main tube ( No. 1a, 14), and set the mount onto the projecting screws on the telescope’s main tube. Carefully reinsert and tighten the screws previously removed to securely fasten the finder scope mount in place.

Now, undo the finder scope adjusting screws (No. 1a, 3) — 3 or 6 of them depending on finder scope model — until the finder scope can easily be slid into its mount.

Important: Make sure the finder scope lens points toward the main tube end (No. 1, 4).

Retighten the screws equally to securely fasten the finder scope in place.

Finder scope assembly (type II):
LED finder scope with screw threading

To assemble the LED finder scope (No. 1b, 2), remove the LED finder scope fastening screws on the telescope’s main tube (No. 1c, 14). Set the LED finder scope onto the projecting screws on the telescope’s main tube. Then carefully reinsert and tighten the screws previously removed to securely fasten the LED finder scope in place.

Important: Make sure the LED finder scope lens points towards the main tube end (No. 1, 4).

Finder scope assembly (type III):
LED finder scope with Quick Insert

The LED finder scope (No. 1b, 2) and mount constitute a single unit. Slide the foot of the LED finder scope completely into the appropriate base on the telescope’s main tube (No. 10, X). The finder scope mount will snap in place.
Assembly

Important: Make sure the LED finder scope lens points towards the main tube end (No. 1, 4).

Finder scope assembly (type IV):
Finder scope with Quick Insert

The finder scope and its mount are preassembled and included in the packaging.

Slide the finder scope mount foot entirely into the appropriate base on the telescope’s main tube (No. 10, X). The finder scope mount will snap in place.

Important: Make sure the LED finder scope lens points towards the main tube end (No. 1, 4).

There are two clamping screws (No. 1c, 14) and a spring-loaded counter screw on the finder scope mount. Evenly tighten the clamping screws until resistance is felt to securely fasten the finder scope in place.

Aligning the finder scope

Aligning types I and IV (finder scopes)

The finder scope must be adjusted before use; the finder scope and the telescope’s main tube must be aligned parallel to one another.

Insert the eyepiece with the greatest focal length into the zenith mirror (12b, refracting telescopes only) or directly into the eyepiece supports (No. 13, reflecting telescopes only). Point the telescope at a significant object approximately 300 metres away (e.g. a house gable, church tower top or building facade) and adjust until the object appears in the centre of the field of vision (No. 15a, A).

Look through the finder scope and align it by turning the 3 or 6 adjustment screws until the object is visible in the middle of the crosshairs. The image you previously saw through your telescope lens must be visible exactly in the centre of the finder scope (2) crosshairs in order to align properly (No. 15a, C).

HINT
Some finder scopes have no integrated optical image reversion. The image in these finder scopes will be upside down. This is not a fault.

Aligning types II and III (LED finder scopes)

The LED finder scope must be adjusted before use; the LED finder scope and the telescope tube must be aligned parallel to one another.

Insert the eyepiece with the greatest focal length into the zenith mirror (No. 12b, refracting telescopes only) or directly into the eyepiece supports (No. 13, reflecting telescopes only). Point the telescope at a significant object approximately 300 metres away (e.g. a house gable, church tower top or building facade) and adjust until the object appears in the centre of the field of vision (No. 15b, A).

Then turn the LED finder scope (2) on using the On/Off switch (No. 1b, Z). Select setting 2 for daytime or setting 1 for nighttime.

Look through the LED finder scope and align it by turning the horizontal (No. 1b, X) and vertical (No. 1b, Y) adjustment screws until you see the red dot in the centre of the image (No. 15b, C). The finder scope and telescope are now aligned.

Protection caps

In order to protect the inside of your telescope from dust and dirt, the tube opening is protected by a dust-protection cap (No. 11, X).
Protection caps

To use the telescope, remove the cap from the opening.

Inserting the eyepiece

On refracting telescopes

Two eyepieces (18) and a star diagonal prism (19) are supplied with this telescope.

The eyepieces allow you to decide which magnification you want your telescope to have.

Before you insert the eyepiece and the star diagonal prism, you must remove the dust-protection cap from the eyepiece connection tube (6). Loosen the screw (No. 12a, X) on the eyepiece connection tube and insert the star diagonal prism. Retighten the screw (X) on the eyepiece connection tube.

Release the clamping screw (No. 12b, X) to fasten the 20 mm eyepiece into the zenith mirror in the same way, and then retighten the clamping screw to secure the eyepiece in place.

Make sure that the eyepiece is pointing vertically upward. If it is not, loosen the screw (No. 12a, X) on the eyepiece connection tube and rotate the star diagonal prism into the vertical position. Remove the dust cap from the main tube end.

On reflecting telescopes

Loosen the clamping screws on the eyepiece supports (6). Insert the 20 mm eyepiece (18) directly into the eyepiece supports. Hand tighten the clamping screws (No. 13, X). Remove the dust cap from the main tube end.
On reflecting telescopes

Part II – Handling

Mount

Your telescope is equipped with an azimuth mount that makes it easy to adjust your telescope horizontally and vertically.

Setup

A dark place is essential for observations because light of all kinds (e.g. street lamps) disturb the visible details of the sky. If you leave a bright room at night, your eyes need approximately 20 minutes to reach full night adaptation, after which you can begin your observations.

Don’t observe from enclosed areas, and put your telescope in location, with the accessories, at least 30 minutes before beginning observation, in order to guarantee a temperature balance.

You should also make sure that the telescope is placed on stable and even ground.

Vertical and horizontal adjustment

Vertical adjustment

Loosen the fastening screw (No. 14a, X) and move the tube up or down. Once you find the right setting, hand tighten the screw to secure the adjustment.

Minor changes can be carried out by slight turns of the adjustment wheel (No. 14b, Y). Before readjusting, loosen the fastening screw (No. 14a, X).

Horizontal adjustment

To move the telescope horizontally, loosen the fastening screw (No. 16, Z) and turn the device in the desired direction. Once you’ve reached the desired position, hand tighten the fastening screw.
Horizontal adjustment

Observation

Aim the telescope at the object to be observed. Look through the finder scope or LED finder scope and centre the object in the middle of the viewing field (crosshairs or red dot) by horizontally and vertically adjusting the telescope.

Now look through the lens and you will see the magnified object. Turn the focusing wheel to sharpen the focus if necessary. You can also change the lens to achieve greater magnification.

HINT
Start each observation with a low-powered lens (20 mm).

Finding stars

You may initially have problems orienting yourself in the sky, as stars and constellations are in constant movement and change their position depending on the season, date and time.

The North Star is the sole exception. It is a fixed star and the starting point of all stellar maps.

You can see some well-known stars and constellations on the map (No.17) that are visible throughout the year. The arrangement of the stars is dependent on the date and time, however.

Accessories

Your telescope is supplied with a number of accessories (No.2). Depending on your telescope’s model, these accessories may include the following:

Eyepieces

Change eyepieces to change your telescope‘s magnification.

Formula for calculating magnification:
Focal length (Telescope) ÷ Focal length (Eyepiece) = Magnification

Examples:

700 mm

| ÷| 20 mm| =| 35X
---|---|---|---|---
700 mm| ÷| 12,5 mm| =|

56X

700 mm

| ÷| 4 mm| =|

175X

Zenith mirror (refraction telescope only)

The zenith mirror (19) reverses the image you see and is therefore used only for celestial observation.

Erecting lens

To see a vertical image the right way up, an erecting lens (20) may be used.

Loosen the clamping screws (No. 22, X) and remove all accessories from the eyepiece supports (6). Insert the erecting lens (20) into the eyepiece supports, and hand tighten the clamping screws. Then insert the eyepiece into the erecting lens opening, and tighten the clamping screws (No. 22,Y).

Barlow lens

A Barlow lens (21) increases magnification.

Assembling and using refracting telescopes

If you use a refracting telescope, the Barlow lens should only be inserted into the zenith mirror (No. 12a, X). Remove the eyepiece from the zenith mirror and replace it with the Barlow lens. Then insert the eyepiece with the greatest focal length and hand tighten the clamping screw to affix it in place
(No. 21, Z).

Assembling and using reflecting telescopes

If you use a reflecting telescope, undo the clamping screws on the eyepiece supports (No. 21, X), and remove the eyepiece from those supports. Then insert the Barlow lens straight in the supports and hand tighten the clamping crews. Finally, insert the eyepiece with the greatest focal length into the Barlow lens, and then fasten it in place with the clamping screws (No. 21, Z).

Dismantling

After an interesting and successful observation, it is recommended 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 before storing. Also, you should stow all the eyepieces and optical accessories in their corresponding receptacles.

HINT
The erecting lens is not recommended for astronomical observations. Only use the diagonal mirror for astronomical observations. Use the erecting lens to observe landscapes.

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 cleaning cloth.

To remove more stubborn dirt, moisten the cleaning cloth with an eye glass cleaning solution, and wipe the lenses gently.

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

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.
Possible observation targets

The moon (No. 23)
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 (M 42) (No. 24)
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 (M 42) is the brightest diffuse nebula in the sky. It is visible even with the naked eye and 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 (M 57) (No. 25)
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 show that it is probably 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 (M 27). When viewed from Earth, we are looking directly at the pole of the nebula.

Constellation Vulpecula (Little Fox):
The Dumbbell Nebula (M 27) (No. 26)
Right Ascension: 19h 59m (hours : minutes)
Declination: +22° 43′ (Degrees : minutes)
Distance: 1,360 light years from Earth

The Dumbbell Nebula (M 27) 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 (M 57). In reasonably good weather, we can see this object well, even with low magnification.

Troubleshooting

Problem: Solution:
No picture: Remove dust protection cap and sunbathe-shield from the objective opening.
Blurred picture: Adjust focus using focus ring.
No focus possible: Wait for temperature to balance out.
Bad picture quality: Never observe through a glass surface.
Viewing object visible in the finder, but not through the telescope: Adjust finder (See Part II-4),
Despite using star diagonal prism, the picture is crooked: The star diagonal prism 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 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 fill out a brief questionnaire to get your warranty term extended to five years. Registration must be completed within three months of purchase (date of receipt) to validate the warranty. If you register thereafter, the warranty term will not be extended. If you have problems with your device, please contact our customer service first. Do not send any products without consulting us first by telephone. Many problems with your device can be solved over the phone. If the problem cannot be resolved by phone, we will take care of transporting
your device to be repaired. If the problem occurred after the warranty ended or it is not covered by our warranty terms, you will receive an estimate of repair costs, free of charge.

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: …………………………………………………………………………….

National Geographic’s net proceeds support vital exploration, conservation, research, and education programs.

Visit our website:
www.nationalgeographic.com

© 2012 National Geographic Society
NATIONAL GEOGRAPHIC and Yellow Border Design
are trademarks of the National Geographic Society,
used under license. All rights reserved.