Four-lens Premium-Teleextender with extension factor 2x
- Four-lens telecentric teleextender 2x
- Multiplying the effective focal length by: 2x
- Fully multicoated design with four lenses
- Telecentric optical design for excellent sharpness
- All lens edges blackened for maximum contrast
- Eyepiece and teleextender barrel size: 1.25"
- Filter thread for color or nebula filters
Product number:
0218750
EAN:
4007922036175
WEEE-Reg.-Nr.:
DE 34323861
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Telescopes - Optics and mechanics
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FAQ - Frequently Asked Questions
That is normal. Finder scopes are only used to make objects easy to locate. The image orientation does not matter for observation.
- Alt-azimuth: easy to use, moves horizontally and vertically
- Equatorial: enables precise tracking of objects with only one axis – ideal for high magnifications and astrophotography
- Moon: from 30 mm
- Planets: from 100 mm
- Deep sky: from 150 mm
Product information "EXPLORE SCIENTIFIC Teleextender 2x 31.7mm/1.25""
With teleextenders it is possible to extend the effective focal length of a telescope system, resulting in higher magnification for the observation of the moon, the planets or small Deep-Sky objects with the same eyepieces. So you can use the advantages of eyepieces with longer focal length - such as the bigger eye distance and the more relaxed observing comfort - at high magnifications also.
These teleextenders incorporate a telecentric optical design that deliveres a excellent image sharpness over the whole field of view and are premium choices for visual observations and astrophotography. The combination of excellent fully multicoating with superior optical design makes the Focal Extenders superior to classic Barlow lenses.
Features:
These teleextenders incorporate a telecentric optical design that deliveres a excellent image sharpness over the whole field of view and are premium choices for visual observations and astrophotography. The combination of excellent fully multicoating with superior optical design makes the Focal Extenders superior to classic Barlow lenses.
Features:
- Suitable for visual observations and astrophotography
- Doubling the effective total focal length of the telescope
- Four lens telecentric design
- Fully multicoated
- Filter thread for color or nebula filters
| Batteries required: | No |
|---|---|
| Colour: | black |
| Diameter (mm): | 48 |
| Extended warranty (years): | 10 |
| Eyepiece Barrel Diameter (mm): | 31.7 |
| Material: | Metal , Plastic |
| Net weight (without access.) (g): | 258 |
| Total length (mm): | 100 |
| Total width (mm): | 48 |
| Waterproof 8): | No |
Product and safety instructions
Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede
Contact:
www.bresser.de
www.bresser.de
Warning notes
- General safety instructions DANGER Risk of eye injuries! Never look directly at the sun or near the sun through this device. There is a risk of blindness! Children should only use the device under supervision. Keep packaging materials (plastic bags, rubber bands, etc.) away from children! There is a risk of suffocation! FIRE HAZARD! Do not expose the device – especially the lenses – to direct sunlight! The light concentration could cause fires. RISK of material damage! Do not dismantle the device! In case of a defect, please contact your dealer. They will contact the service center and may send the device in for repair. Do not expose the device to temperatures above 60°C!
- Never look at the sun through an eyepiece/telescope without a certified protection filter. A moon filter can never be used for solar observation. The moon filter is only suitable for moon observation. The solar filter must be mounted in front of the telescope opening, not at the eyepiece. Otherwise, the concentrated light beam through the optics will immediately destroy the filter foil, leading to severe eye damage, including permanent blindness.
- Never leave the optics unattended. Children and inexperienced adults could point the telescope at the sun without proper precautions and lose their eyesight.
- Do not expose the device to high temperatures.
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