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/OIII/SII CMOS f/2 Highspeed 31mm](/Produktbilder/normal/70950_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Highspeed-31mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Highspeed 31mm
$ 486,-
![Baader Filter H-alpha/OIII/SII CMOS Narrowband 1,25"](/Produktbilder/normal/70893_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Narrowband-1-25-.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Narrowband 1,25"
$ 425,-
![Baader Filter H-alpha/OIII/SII CMOS Narrowband 2"](/Produktbilder/normal/70896_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Narrowband-2-.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Narrowband 2"
$ 720,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 1,25"](/Produktbilder/normal/70956_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Ultra-Highspeed-1-25-.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 1,25"
$ 810,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Highspeed 1,25"](/Produktbilder/normal/70949_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Highspeed-1-25-.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Highspeed 1,25"
$ 458,-
![Baader Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 2"](/Produktbilder/normal/70903_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Ultra-Narrowband-2-.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 2"
$ 1.140,-
![Baader Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 36mm](/Produktbilder/normal/70902_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Ultra-Narrowband-36mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 36mm
$ 1.010,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Highspeed 2"](/Produktbilder/normal/70952_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Highspeed-2-.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Highspeed 2"
$ 760,-
![Baader Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 1,25"](/Produktbilder/normal/70900_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Ultra-Narrowband-1-25-.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 1,25"
$ 790,-
![Baader Filter H-alpha/OIII/SII CMOS Narrowband 50x50mm](/Produktbilder/normal/70898_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Narrowband-50x50mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Narrowband 50x50mm
$ 880,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 2"](/Produktbilder/normal/70959_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Ultra-Highspeed-2-.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 2"
$ 1.200,-
![Baader Filter H-alpha/OIII/SII CMOS Narrowband 36mm](/Produktbilder/normal/70895_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Narrowband-36mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Narrowband 36mm
$ 510,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 36mm](/Produktbilder/normal/70958_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Ultra-Highspeed-36mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 36mm
$ 1.020,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 65x65mm](/Produktbilder/normal/70962_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Ultra-Highspeed-65x65mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 65x65mm
$ 1.820,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 50x50mm](/Produktbilder/normal/70961_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Ultra-Highspeed-50x50mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 50x50mm
$ 1.390,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Highspeed 50x50mm](/Produktbilder/normal/70954_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Highspeed-50x50mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Highspeed 50x50mm
$ 910,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Highspeed 65x65mm](/Produktbilder/normal/70955_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Highspeed-65x65mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Highspeed 65x65mm
$ 1.130,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Highspeed 36mm](/Produktbilder/normal/70951_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Highspeed-36mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Highspeed 36mm
$ 540,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 50,4mm](/Produktbilder/normal/70960_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Ultra-Highspeed-50-4mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 50,4mm
$ 1.300,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 31mm](/Produktbilder/normal/70957_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Ultra-Highspeed-31mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 31mm
$ 860,-
![Baader Filter H-alpha/OIII/SII CMOS f/2 Highspeed 50,4mm](/Produktbilder/normal/70953_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-2-Highspeed-50-4mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/2 Highspeed 50,4mm
$ 790,-
![Baader Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 65x65mm](/Produktbilder/normal/70906_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Ultra-Narrowband-65x65mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 65x65mm
$ 1.710,-
![Baader Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 31mm](/Produktbilder/normal/70901_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Ultra-Narrowband-31mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 31mm
$ 840,-
![Baader Filter H-alpha/OIII/SII CMOS Narrowband 50,4mm](/Produktbilder/normal/70897_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Narrowband-50-4mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Narrowband 50,4mm
$ 820,-
![Baader Filter H-alpha/OIII/SII CMOS Narrowband 65x65mm](/Produktbilder/normal/70899_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Narrowband-65x65mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Narrowband 65x65mm
$ 1.110,-
![Baader Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 50,4mm](/Produktbilder/normal/70904_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Ultra-Narrowband-50-4mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 50,4mm
$ 1.240,-
![Baader Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 50x50mm](/Produktbilder/normal/70905_1/Baader-Filter-H-alpha-OIII-SII-CMOS-Ultra-Narrowband-50x50mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS Ultra-Narrowband 50x50mm
$ 1.320,-
![Optolong SHO Filter Kit 3nm 2"](/Produktbilder/normal/73684_1/Optolong-SHO-Filter-Kit-3nm-2-.jpg)
Optolong
SHO Filter Kit 3nm 2"
$ 1.410,-
![IDAS SHO Filter Set 52mm](/Produktbilder/normal/76811_3/IDAS-SHO-Filter-Set-52mm.jpg)
IDAS
SHO Filter Set 52mm
$ 1.090,-
![IDAS SHO Filter Set 50.8mm](/Produktbilder/normal/76810_2/IDAS-SHO-Filter-Set-50-8mm.jpg)
IDAS
SHO Filter Set 50.8mm
$ 1.390,-
![Baader Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 65x65mm](/Produktbilder/normal/75597_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-3-Ultra-Highspeed-65x65mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 65x65mm
$ 1.720,-
![Baader Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 50x50mm](/Produktbilder/normal/75596_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-3-Ultra-Highspeed-50x50mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 50x50mm
UVP:
$ 1.320,-
Unser Preis:
$ 1.240,-
![Baader Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 50,4mm](/Produktbilder/normal/75595_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-3-Ultra-Highspeed-50-4mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 50,4mm
$ 1.240,-
![Baader Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 2"](/Produktbilder/normal/75594_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-3-Ultra-Highspeed-2-.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 2"
$ 1.150,-
![Baader Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 36mm](/Produktbilder/normal/75593_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-3-Ultra-Highspeed-36mm.jpg)
Baader
Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 36mm
$ 1.010,-
![Baader Filter H-alpha/OIII/SII CMOS f/3 Ultra-Highspeed 31mm](/Produktbilder/normal/75592_1/Baader-Filter-H-alpha-OIII-SII-CMOS-f-3-Ultra-Highspeed-31mm.jpg)