Bresser Classic 60/900 Refractor Telescope
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Product Information
Full details
The BRESSER Classic 60/900 Refractor Telescope is designed for aspiring astronomers and beginner stargazers looking to explore the moon and planets. Its key benefit is its user-friendly design, featuring an alt-azimuth mount and a stable tripod, making it accessible for all ages. A slight caveat is its primary focus on solar system objects, rather than deep-sky viewing. This refractor telescope offers a 900 mm focal length and a 60 mm objective lens diameter for clear observations, with magnifications up to 338x and the ability to capture smartphone images of celestial bodies.
All features
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Extended Product Information
FAQs
What is the maximum useful magnification of this telescope?
The telescope can achieve up to 338x magnification with the included eyepieces. However, the maximum *useful* magnification depends on viewing conditions and atmospheric stability. For most observations, magnifications between 45x and 150x will provide the clearest and most detailed views.
Can I use this telescope for daytime viewing?
Yes, the BRESSER Classic 60/900 AZ telescope can be used for daytime terrestrial observation by using the included 1.5x erecting lens. This accessory corrects the image orientation, making it suitable for viewing distant objects on Earth.
How do I collimate this telescope?
Refractor telescopes like the BRESSER Classic 60/900 AZ do not require collimation (alignment of mirrors) as they use lenses. Their optical alignment is fixed during manufacturing.
What type of celestial objects are best viewed with this telescope?
This telescope is best suited for observing the Moon, brighter planets like Jupiter and Saturn, and possibly star clusters. It is less ideal for faint deep-sky objects such as nebulae or galaxies due to its aperture size.
Is the astronomy software included or downloadable?
The telescope comes with access to downloadable astronomy software. Instructions on how to download and install it should be included in the operating instructions.
How much does the telescope weigh?
The telescope weighs approximately 2.35 kg (5.18 lbs), making it very portable.
What is the difference between the eyepieces (4mm, 12.5mm, 20mm)?
Each eyepiece provides a different level of magnification. The magnification is calculated by dividing the telescope's focal length (900mm) by the eyepiece's focal length. The 4mm eyepiece provides the highest magnification (900/4 = 225x), the 12.5mm provides medium magnification (900/12.5 = 72x), and the 20mm provides the lowest magnification (900/20 = 45x). Higher magnification shows smaller details but results in a dimmer and potentially less stable image.
Troubleshooting
Blurry or unfocused images
Adjust the focuser knob slowly until the image becomes sharp. Ensure the correct eyepiece is inserted and that the object is properly centered in the field of view. Check that the lens cap is removed.
Difficulty finding celestial objects
Use the 5x24 viewfinder to initially locate the object. Start with the lowest power eyepiece (20mm) for a wider field of view. Ensure the telescope is roughly pointed in the correct direction using star charts or astronomy software.
Image is upside down or reversed
This is normal for astronomical refractors when used with a standard diagonal and eyepiece. For terrestrial viewing, use the included 1.5x erecting lens, which will provide an upright and correctly oriented image, but will reduce brightness and magnification.
Smartphone camera won't align properly
Adjust the clamps on the smartphone holder to ensure your phone's camera lens is directly over the eyepiece. You may need to reposition the phone slightly until a clear image appears on your screen.
Tripod feels unstable
Ensure all tripod legs are fully extended and locked. Place the tripod on a firm, level surface. Avoid making sudden movements while observing.
Pros and Cons
Pros
- Excellent for beginners and younger users due to its simple operation.
- Provides clear views of the Moon and brighter planets.
- Includes a useful smartphone adapter for basic astrophotography.
- Lightweight and portable with a stable tripod.
- Good value for the included accessories and features.
Cons
- Limited capability for observing fainter deep-sky objects.
- Maximum magnification may reveal chromatic aberration on bright objects.
- The included viewfinder might be basic for very precise aiming.
- Requires manual tracking to keep objects centered due to the alt-azimuth mount.
Setup, Compatibility & Care
Setup:
- Assemble the aluminum tripod by extending its legs and securing them. Attach the accessory tray.
- Mount the telescope tube onto the azimuthal mount head.
- Install the 5x24 viewfinder onto the telescope tube, ensuring it is aligned with the main optical path.
- Insert the zenith mirror into the focuser, followed by your desired eyepiece.
- For smartphone use, attach the smartphone holder to the focuser or eyepiece.
Compatibility:
- Eyepieces: The telescope uses standard 1.25" (31.7 mm) eyepieces and accessories. Additional eyepieces with different focal lengths can be purchased to achieve a wider range of magnifications.
- Smartphones: The included adapter is designed to fit most standard smartphones. Ensure your phone's camera lens can be centered over the eyepiece.
Care:
- Lens Cleaning: Use a soft lens brush or a specialized lens cleaning cloth and solution for the objective lens. Avoid touching the lens surface with your fingers. For eyepieces, use similar methods.
- Storage: Store the telescope and its accessories in a cool, dry place, preferably in their original packaging or a protective case, to prevent dust accumulation and damage.
- Dew: If dew forms on the optics during observation, gently wipe it off with a soft, lint-free cloth. Allow the telescope to acclimate to ambient temperature before storing to minimize condensation.
- Alignment: Periodically check the alignment of the viewfinder with the main telescope to ensure accurate aiming.