CHF 44.00
Telescope filters against disturbing light pollution in and around cities
These OVL telescopic filters in their black anodized aluminum socket are designed to filter out the disturbing light from mercury vapor lamps and other light pollution, while allowing critical H-alpha and H-beta wavelengths to pass through better than competing filters. Bright, light-polluted skies appear much darker and the contrast between the sky and the object is visibly enhanced. This contrast enhancement effect is especially important in foggy conditions. Unlike stars, nebulae emit light only in a very limited wavelength range. These filters allow the maximum transmission of the important wavelengths in H-alpha, H-beta and the two lines of inonized oxygen, which are the most important wavelength ranges for nebulae. Observations of galaxies and star clusters also benefit from this filter, although not as much. Furthermore, the contrast is improved for reddish details on planets. This filter works with all telescope sizes, but is particularly suitable for telescopes up to 114 mm in diameter, where other filters take away too much light. Scope of delivery: Filter 2″ storage box ! Power supply and batteries are not included!
Shipping weight: | 0.04kg |
Shipping Size: | 7x7x1.5cm |
Type | : Contrast Enhancement Filter |
Connection | 2″ (M48) filter thread |
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Liebe Kunden Bitte bestellen Sie Waren, welche für Weihnachten bestimmt sind, vor dem 15. Dezember. Danach ist es nicht sicher ob die Waren noch vor Weihnachten bei Ihnen eintreffen. Auch haben einige Lieferanten zwischen Weihnachten und der ersten Januar Woche geschlossen. Es kann also zu Lieferverzögerungen kommen. Nun wünsche ich Ihnen eine schöne Weihnachtszeit und dann einen guten Rutsch ins 2025 Festliche Grüsse Thomas Kaderli Dismiss
Dear Customers,
Thank you for considering my shop. There are only a few days left until Christmas, and because of this I have to inform you that a delivery before Christmas can no longer be guaranteed
Thank you for your understanding.
T. Kaderli
Teleskopshop.ch
Dear Customers,
Thank you for considering my shop. There are only a few days left until Christmas, and because of this I have to inform you that a delivery before Christmas can no longer be guaranteed
Thank you for your understanding.
T. Kaderli
Teleskopshop.ch