{"id":107510,"date":"2026-04-28T10:56:22","date_gmt":"2026-04-28T08:56:22","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=107510"},"modified":"2026-07-20T12:45:31","modified_gmt":"2026-07-20T10:45:31","slug":"televue-nebustar-uhc-2-uhc-filter","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/televue-nebustar-uhc-2-uhc-filter\/","title":{"rendered":"TeleVue Nebustar UHC 2\" \u2013 UHC Filter"},"content":{"rendered":"

TeleVue Nebustar UHC 2\" : UHC-Filter: UHC-nevelfilter in 2 inch<\/strong><\/h2>\n\n\n\n

De Nebustar UHC in 2 inch brengt het allround nevelcontrast naar de grote overzichtsoculairs en blijft in de neus van de zenitspiegel zitten terwijl je oculairs wisselt.<\/p>\n\n\n\n

De combinatie van een 2 inch veld met UHC-contrast is de standaard voor het afspeuren van de zomerse Melkweg.<\/p>\n\n\n\n

\"TeleVue<\/figure>
\"TeleVue<\/figure>
\"TeleVue<\/figure><\/figure>\n\n\n\n
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\"TeleVue<\/figure>\n<\/div>\n\n\n\n
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How a line filter gains contrast<\/h4>\n\n\n\n

Emission nebulae emit their light in a handful of narrow spectral lines. Light pollution and the natural airglow do not; they spread out over the entire spectrum. A line filter lets only the nebula lines through and blocks the rest.<\/p>\n\n\n\n

The result is not a brighter image, but a darker background from which the nebula emerges. With a Dutch or Belgian sky, that difference is significant.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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\"TeleVue<\/figure>\n<\/div>\n\n\n\n
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Type 2: Built by Astronomik to TeleVue specifications<\/h4>\n\n\n\n

For the Bandmate Type 2 line, TeleVue is collaborating with filter specialist Astronomik. The transmission bands lie exactly on the emission lines, with transmission in the passband exceeding ninety percent and a sharp cutoff outside of it.<\/p>\n\n\n\n

The coating is polished and parfocal with TeleVue eyepieces, so focusing is hardly necessary after screwing it on. The filter housing has standard threads, making it compatible with any eyepiece with filter threads of the corresponding size.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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\"TeleVue<\/figure>\n<\/div>\n\n\n\n
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Het eerste nevelfilter dat je koopt<\/h4>\n\n\n\n

De Nebustar laat een venster door dat de H-beta-lijn en beide zuurstoflijnen omvat. Daarmee werkt hij op vrijwel elke emissienevel: van de Orionnevel en de Lagunenevel tot de planetaire nevels waar ook het OIII-filter op mikt.<\/p>\n\n\n\n

Die breedte maakt de UHC het logische eerste nevelfilter. Een OIII wint daarna op de specifieke zuurstofdoelen nog een extra stap contrast, een H-beta ontsluit tot slot de handvol specialistendoelen.<\/p>\n<\/div>\n<\/div>\n\n\n\n

Featured accessories<\/h3>\n\n\n\n

The filter screws into the filter thread of each eyepiece in the corresponding size, and therefore also into the TeleVue eyepieces from our range. For use with a 2-inch diagonal mirror, a 2-inch filter can be inserted directly into the mirror nose.<\/p>\n\n\n\n

For whom yes and for whom no<\/h3>\n\n\n\n