Linienfilter lassen ganz selektiv nur das Licht einer bestimmten Spektrallinie durch. Besonders beliebt sind OIII-, SII- und H-Alpha-Filter.
Die römischen Zahlen III und II bezeichnen dabei den Ionisationsgrad des chemischen Elements, das die Spektrallinie erzeugt. So steht OIII (sprich: "Oh drei") für zweifach ionisierten Sauerstoff und SII für einfach ionisierten Schwefel. OI und SI bezeichnen die elektrisch neutralen Atome.
Linienfilter sind ideal zur visuellen Beobachtung und Fotografie von Emissionsnebeln, Supernova-Überresten und planetarischen Nebeln, da diese Objekte definierte Spektrallinien erzeugen. Sternhaufen und Galaxien hingegen haben ein kontinuierliches Spektrum. Für sie sind Filter zur allgemeinen Unterdrückung der Himmelsaufhellung besser geeignet (CLS- oder UHC-Filter).
![Beispiel eines Emissionslinienspektrums (Quelle: Wikipedia)](/CMS/images/text/glossary/Emissionslinien_Wikipedia.png)
![Baader Filter H-alpha CMOS f/2 Highspeed 50x50mm](/Produktbilder/normal/70912_1/Baader-Filter-H-alpha-CMOS-f-2-Highspeed-50x50mm.jpg)
Baader
Filter H-alpha CMOS f/2 Highspeed 50x50mm
$ 322,-
![Baader Filter H-alpha CMOS f/2 Highspeed 65x65mm](/Produktbilder/normal/70913_1/Baader-Filter-H-alpha-CMOS-f-2-Highspeed-65x65mm.jpg)
Baader
Filter H-alpha CMOS f/2 Highspeed 65x65mm
$ 399,-
![Baader Filter H-alpha CMOS f/2 Ultra-Highspeed 31mm](/Produktbilder/normal/70929_1/Baader-Filter-H-alpha-CMOS-f-2-Ultra-Highspeed-31mm.jpg)
Baader
Filter H-alpha CMOS f/2 Ultra-Highspeed 31mm
$ 311,-
![Baader Filter H-alpha CMOS f/2 Ultra-Highspeed 36mm](/Produktbilder/normal/70930_1/Baader-Filter-H-alpha-CMOS-f-2-Ultra-Highspeed-36mm.jpg)
Baader
Filter H-alpha CMOS f/2 Ultra-Highspeed 36mm
$ 377,-
![Baader Filter H-alpha CMOS f/2 Highspeed 36mm](/Produktbilder/normal/70909_1/Baader-Filter-H-alpha-CMOS-f-2-Highspeed-36mm.jpg)
Baader
Filter H-alpha CMOS f/2 Highspeed 36mm
$ 191,-
![Baader Filter H-alpha CMOS f/2 Highspeed 31mm](/Produktbilder/normal/70908_1/Baader-Filter-H-alpha-CMOS-f-2-Highspeed-31mm.jpg)
Baader
Filter H-alpha CMOS f/2 Highspeed 31mm
$ 170,-
![Baader Filter H-alpha CMOS Narrowband 65x65mm](/Produktbilder/normal/70857_1/Baader-Filter-H-alpha-CMOS-Narrowband-65x65mm.jpg)
Baader
Filter H-alpha CMOS Narrowband 65x65mm
$ 393,-
![Baader Filter H-alpha CMOS Ultra-Narrowband 50,4mm](/Produktbilder/normal/70876_1/Baader-Filter-H-alpha-CMOS-Ultra-Narrowband-50-4mm.jpg)
Baader
Filter H-alpha CMOS Ultra-Narrowband 50,4mm
$ 453,-
![Omegon Pro H-Alpha 7nm Filter 1,25"](/Produktbilder/normal/60111_1/Omegon-Pro-H-Alpha-7nm-Filter-1-25-.jpg)
Omegon
Pro H-Alpha 7nm Filter 1,25"
$ 199,-
![Omegon Pro H-Alpha Filter 2''](/Produktbilder/normal/47299_1/Omegon-Pro-H-Alpha-Filter-2-.jpg)
Omegon
Pro H-Alpha Filter 2''
$ 209,-
![Omegon Pro H-Alpha Filter 1,25''](/Produktbilder/normal/47298_1/Omegon-Pro-H-Alpha-Filter-1-25-.jpg)
Omegon
Pro H-Alpha Filter 1,25''
$ 149,-
![Chroma Filter H-Alpha 1,25", 8nm](/Produktbilder/normal/66075_1/Chroma-Filter-H-Alpha-1-25-8nm.jpg)
Chroma
Filter H-Alpha 1,25", 8nm
UVP:
$ 550,-
Unser Preis:
$ 335,-
![Chroma Filter H-Alpha 1,25", 3nm](/Produktbilder/normal/66073_1/Chroma-Filter-H-Alpha-1-25-3nm.jpg)
Chroma
Filter H-Alpha 1,25", 3nm
UVP:
$ 1.080,-
Unser Preis:
$ 710,-
![Baader Filter H-alpha CMOS f/2 Highspeed 1,25"](/Produktbilder/normal/70907_1/Baader-Filter-H-alpha-CMOS-f-2-Highspeed-1-25-.jpg)
Baader
Filter H-alpha CMOS f/2 Highspeed 1,25"
$ 163,-
![Baader Filter H-alpha CMOS f/2 Ultra-Highspeed 1,25"](/Produktbilder/normal/70928_1/Baader-Filter-H-alpha-CMOS-f-2-Ultra-Highspeed-1-25-.jpg)
Baader
Filter H-alpha CMOS f/2 Ultra-Highspeed 1,25"
$ 300,-
![Baader Filter H-alpha CMOS Ultra-Narrowband 2"](/Produktbilder/normal/70875_1/Baader-Filter-H-alpha-CMOS-Ultra-Narrowband-2-.jpg)
Baader
Filter H-alpha CMOS Ultra-Narrowband 2"
$ 415,-
![Baader Filter H-alpha CMOS Ultra-Narrowband 50x50mm](/Produktbilder/normal/70877_1/Baader-Filter-H-alpha-CMOS-Ultra-Narrowband-50x50mm.jpg)
Baader
Filter H-alpha CMOS Ultra-Narrowband 50x50mm
$ 520,-
![Baader Filter H-alpha CMOS Ultra-Narrowband 31mm](/Produktbilder/normal/70873_1/Baader-Filter-H-alpha-CMOS-Ultra-Narrowband-31mm.jpg)
Baader
Filter H-alpha CMOS Ultra-Narrowband 31mm
$ 305,-
![Baader Filter H-alpha CMOS Narrowband 36mm](/Produktbilder/normal/70853_1/Baader-Filter-H-alpha-CMOS-Narrowband-36mm.jpg)
Baader
Filter H-alpha CMOS Narrowband 36mm
$ 180,-
![Baader Filter H-alpha CMOS Narrowband 50,4mm](/Produktbilder/normal/70855_1/Baader-Filter-H-alpha-CMOS-Narrowband-50-4mm.jpg)
Baader
Filter H-alpha CMOS Narrowband 50,4mm
$ 268,-
![Baader Filter H-alpha CMOS f/2 Highspeed 50,4mm](/Produktbilder/normal/70911_1/Baader-Filter-H-alpha-CMOS-f-2-Highspeed-50-4mm.jpg)
Baader
Filter H-alpha CMOS f/2 Highspeed 50,4mm
$ 278,-
![Baader Filter H-alpha CMOS f/2 Ultra-Highspeed 2"](/Produktbilder/normal/70931_1/Baader-Filter-H-alpha-CMOS-f-2-Ultra-Highspeed-2-.jpg)
Baader
Filter H-alpha CMOS f/2 Ultra-Highspeed 2"
$ 473,-
![Baader Filter H-alpha CMOS f/2 Ultra-Highspeed 50,4mm](/Produktbilder/normal/70932_1/Baader-Filter-H-alpha-CMOS-f-2-Ultra-Highspeed-50-4mm.jpg)
Baader
Filter H-alpha CMOS f/2 Ultra-Highspeed 50,4mm
$ 520,-
![Baader Filter H-alpha CMOS Narrowband 2"](/Produktbilder/normal/70854_1/Baader-Filter-H-alpha-CMOS-Narrowband-2-.jpg)
Baader
Filter H-alpha CMOS Narrowband 2"
$ 257,-
![Baader Filter H-alpha CMOS Narrowband 31mm](/Produktbilder/normal/70852_1/Baader-Filter-H-alpha-CMOS-Narrowband-31mm.jpg)
Baader
Filter H-alpha CMOS Narrowband 31mm
$ 159,-
![Baader Filter H-alpha CMOS Narrowband 1,25"](/Produktbilder/normal/70851_1/Baader-Filter-H-alpha-CMOS-Narrowband-1-25-.jpg)
Baader
Filter H-alpha CMOS Narrowband 1,25"
$ 152,-
![Baader Filter H-alpha CMOS Ultra-Narrowband 36mm](/Produktbilder/normal/70874_1/Baader-Filter-H-alpha-CMOS-Ultra-Narrowband-36mm.jpg)
Baader
Filter H-alpha CMOS Ultra-Narrowband 36mm
$ 366,-
![Baader Filter H-alpha CMOS Ultra-Narrowband 1,25"](/Produktbilder/normal/70872_1/Baader-Filter-H-alpha-CMOS-Ultra-Narrowband-1-25-.jpg)
Baader
Filter H-alpha CMOS Ultra-Narrowband 1,25"
$ 290,-
![Baader Filter H-alpha CMOS Ultra-Narrowband 65x65mm](/Produktbilder/normal/70878_1/Baader-Filter-H-alpha-CMOS-Ultra-Narrowband-65x65mm.jpg)
Baader
Filter H-alpha CMOS Ultra-Narrowband 65x65mm
$ 650,-
![Baader Filter H-alpha CMOS f/2 Ultra-Highspeed 65x65mm](/Produktbilder/normal/70934_1/Baader-Filter-H-alpha-CMOS-f-2-Ultra-Highspeed-65x65mm.jpg)
Baader
Filter H-alpha CMOS f/2 Ultra-Highspeed 65x65mm
UVP:
$ 760,-
Unser Preis:
$ 680,-
![Baader Filter H-alpha CMOS f/2 Ultra-Highspeed 50x50mm](/Produktbilder/normal/70933_1/Baader-Filter-H-alpha-CMOS-f-2-Ultra-Highspeed-50x50mm.jpg)
Baader
Filter H-alpha CMOS f/2 Ultra-Highspeed 50x50mm
$ 590,-
![Baader Filter H-alpha CMOS f/2 Highspeed 2"](/Produktbilder/normal/70910_1/Baader-Filter-H-alpha-CMOS-f-2-Highspeed-2-.jpg)
Baader
Filter H-alpha CMOS f/2 Highspeed 2"
$ 268,-
![Astronomik Filter H-alpha 12nm CCD T2](/Produktbilder/normal/67080_1/Astronomik-Filter-H-alpha-12nm-CCD-T2.jpg)
Astronomik
Filter H-alpha 12nm CCD T2
$ 294,-
![Astronomik Filter H-alpha 12nm CCD MaxFR Clip Canon EOS R XL](/Produktbilder/normal/67092_1/Astronomik-Filter-H-alpha-12nm-CCD-MaxFR-Clip-Canon-EOS-R-XL.jpg)
Astronomik
Filter H-alpha 12nm CCD MaxFR Clip Canon EOS R XL
$ 490,-
![Astronomik Filter H-alpha 12nm CCD MaxFR Clip Nikon XL](/Produktbilder/normal/67094_1/Astronomik-Filter-H-alpha-12nm-CCD-MaxFR-Clip-Nikon-XL.jpg)
Astronomik
Filter H-alpha 12nm CCD MaxFR Clip Nikon XL
$ 490,-
![Astronomik Filter H-alpha 6nm CCD MaxFR 2"](/Produktbilder/normal/67109_1/Astronomik-Filter-H-alpha-6nm-CCD-MaxFR-2-.jpg)