EXPLORE SCIENTIFIC 1.25" O-III Nebula Filter 6.5nm
The EXPLORE SCIENTIFIC O-III filter allows the accurate observation of low-light deep sky objects; narrow band version with 6.5 nm to increase contrast even in difficult urban conditions.
- High-quality EXPLORE SCIENTIFIC O-III filter
- Only lets the emission lines of oxygen pass
- Absorbs all other emission lines and almost all artificial light
- Band pass width: 6.5 nm
- Narrow band version for difficult urban conditions
- Allows more contrast for faint deep sky objects
- Individual test certificate included to guarantee you receive a premium filter
Product number:
0310105
EAN:
4007922072661
WEEE-Reg.-Nr.:
DE 34323861
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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 1.25" O-III Nebula Filter 6.5nm"
One of the most important obstacles for the exploration of the night sky
is the brightening of the night sky by artificial lighting, such as
streetlights. The night sky is not really dark in the vicinity of towns
or cities, which reduces the visibility of objects beyond the solar
system enormously. Depending on the type of celestial object, it is
possible to increase the contrast dramatically by blocking the interfering artificial light.
FEATURES
The EXPLORE SCIENTIFIC O-III filter uses a characteristic property of the so-called emmission nebulae.
Those objects glow in special colors, the so-called emmission lines.
Those emmission lines are linked to chemical elements - in this case
oxygen. The EXPLORE SCIENTIFIC O-III nebula filter blocks all other colors (and thereby nearly all of the artificial light) and only the two emmission lines of the oxygen can pass the filter.
The result is astonishing: suddenly, nebulae are visible in locations
that were completely empty without using filters. In suburban skies, for
example, the veil nebula NGC 6992 is almost invisible with a 200 mm
telescope. By using this filter you can see the nebula and its
structures without any difficulties. A must for every visual observer and for astrophotography.
The EXPLORE SCIENTIFIC nebula filters come with an individual test certificate - your guarantee for receiving a premium filter.
This filter's narrow passband of only 6.5 nm bandwidth highlights the
faint emission nebulae or makes them visible even under difficult urban
conditions.
- enables the observation of so-called emmission nebulae
- blocks almost the entire artificial light
- only the two emmission lines of the oxygen passes the filter
- band pass width: 6.5 nm
- narrow band version for difficult urban conditions
- allows more contrast for faint deep sky objects
- ideal for use near cities, in heavy brightened skies
- individual test certificate included to guarantee you receive a premium filter
SCOPE OF DELIVERY
- 1x 1.25" O-III nebula filter
| Batteries required: | No |
|---|---|
| Colour: | black |
| Extended warranty (years): | 10 |
| Eyepiece Barrel Diameter (mm): | 31.7 |
| Field of application [Telescope-filter]: | Filter for Deep-Sky Observing and Astrophotography |
| Filter thread size (mm): | 31.75 |
| Material: | Glass , Plastic |
| Net weight (without access.) (g): | 10 |
| Telescope filter type: | Nebula filter |
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.
