Sky-Watcher 1.25" light pollution filter39.94€Price including VAT 21% (33.01 € without VAT)
Will get 10.06.2024 |
This contrast-enhancing anodized aluminum, optical glass filter is designed to block out the wavelengths of light emitted by mercury-vapor light and other common causes of light pollution, whilst providing higher transmission at critical hydrogen-alpha and hydrogen-beta lines than competing filters. Bright, light-polluted skies appear much darker, and the contrast between object and sky is improved significantly. This contrast-enhancement effect is particularly apparent on nebulae. Unlike stars, emission nebulae give off the light in a very narrow range of wavelengths. This filter allows maximum transmission of the important wavelengths of H-alpha, H-beta and doubly ionized oxygen – the ones most commonly emitted by nebulae. Views of galaxies and star clusters are also enhanced but to a lesser degree. Also improves contrast on reddish planetary detail. Works well in telescopes of all apertures but is highly recommended for use on smaller telescopes up to 114mm diameter, where conventional filters swallow up too much light. Supplied with storage case.
Unit weight: | 0.1 kg |
---|
BresserBRESSER Sirius 70/900 AZ Refractor Telescope with Smartphone Camera Adapter Availability: 3 161.00 € Will get 10.06.2024 -+ |
-4% Availability: 5 19.10 €19.90 Will get 11.06.2024 -+ | -10% Availability: >5 37.60 €41.83 Will get 25.06.2024 -+ |
34K
1062
2739
1162
2741
1744
3343
1571
26K
2711
6909
5
6852
61