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)
![Omegon Pro SII CCD Filter 2''](/Produktbilder/normal/47295_1/Omegon-Pro-SII-CCD-Filter-2-.jpg)
Omegon
Pro SII CCD Filter 2''
$ 189,-
![Baader Filter SII CMOS f/2 Ultra-Highspeed 50x50mm](/Produktbilder/normal/70947_1/Baader-Filter-SII-CMOS-f-2-Ultra-Highspeed-50x50mm.jpg)
Baader
Filter SII CMOS f/2 Ultra-Highspeed 50x50mm
$ 436,-
![Baader Filter SII CMOS Ultra-Narrowband 31mm](/Produktbilder/normal/70887_1/Baader-Filter-SII-CMOS-Ultra-Narrowband-31mm.jpg)
Baader
Filter SII CMOS Ultra-Narrowband 31mm
$ 291,-
![Baader Filter SII CMOS f/2 Ultra-Highspeed 36mm](/Produktbilder/normal/70944_1/Baader-Filter-SII-CMOS-f-2-Ultra-Highspeed-36mm.jpg)
Baader
Filter SII CMOS f/2 Ultra-Highspeed 36mm
$ 353,-
![Baader Filter SII CMOS f/2 Ultra-Highspeed 2"](/Produktbilder/normal/70945_1/Baader-Filter-SII-CMOS-f-2-Ultra-Highspeed-2-.jpg)
Baader
Filter SII CMOS f/2 Ultra-Highspeed 2"
$ 403,-
![Baader Filter SII CMOS f/2 Highspeed 1,25"](/Produktbilder/normal/70921_1/Baader-Filter-SII-CMOS-f-2-Highspeed-1-25-.jpg)
Baader
Filter SII CMOS f/2 Highspeed 1,25"
$ 161,-
![Omegon Pro SII CCD Filter 1,25''](/Produktbilder/normal/47294_1/Omegon-Pro-SII-CCD-Filter-1-25-.jpg)
Omegon
Pro SII CCD Filter 1,25''
$ 139,-
![Optolong SII Filter 1.25"](/Produktbilder/normal/67555_1/Optolong-SII-Filter-1-25-.jpg)
Optolong
SII Filter 1.25"
$ 158,-
![Optolong SII Filter 2"](/Produktbilder/normal/67555_1/Optolong-SII-Filter-2-.jpg)
Optolong
SII Filter 2"
UVP:
$ 261,-
Unser Preis:
$ 250,-
![Baader Filter SII CMOS Narrowband 31mm](/Produktbilder/normal/70866_1/Baader-Filter-SII-CMOS-Narrowband-31mm.jpg)
Baader
Filter SII CMOS Narrowband 31mm
$ 155,-
![Baader Filter SII CMOS Narrowband 1,25"](/Produktbilder/normal/70865_1/Baader-Filter-SII-CMOS-Narrowband-1-25-.jpg)
Baader
Filter SII CMOS Narrowband 1,25"
$ 147,-
![Baader Filter SII CMOS f/2 Ultra-Highspeed 50,4mm](/Produktbilder/normal/70946_1/Baader-Filter-SII-CMOS-f-2-Ultra-Highspeed-50-4mm.jpg)
Baader
Filter SII CMOS f/2 Ultra-Highspeed 50,4mm
$ 428,-
![Baader Filter SII CMOS Narrowband 50,4mm](/Produktbilder/normal/70869_1/Baader-Filter-SII-CMOS-Narrowband-50-4mm.jpg)
Baader
Filter SII CMOS Narrowband 50,4mm
$ 298,-
![Baader Filter SII CMOS Ultra-Narrowband 50x50mm](/Produktbilder/normal/70891_1/Baader-Filter-SII-CMOS-Ultra-Narrowband-50x50mm.jpg)
Baader
Filter SII CMOS Ultra-Narrowband 50x50mm
$ 434,-
![Baader Filter SII CMOS Ultra-Narrowband 50,4mm](/Produktbilder/normal/70890_1/Baader-Filter-SII-CMOS-Ultra-Narrowband-50-4mm.jpg)
Baader
Filter SII CMOS Ultra-Narrowband 50,4mm
$ 425,-
![Baader Filter SII CMOS f/2 Highspeed 2"](/Produktbilder/normal/70924_1/Baader-Filter-SII-CMOS-f-2-Highspeed-2-.jpg)
Baader
Filter SII CMOS f/2 Highspeed 2"
$ 264,-
![Baader Filter SII CMOS Ultra-Narrowband 36mm](/Produktbilder/normal/70888_1/Baader-Filter-SII-CMOS-Ultra-Narrowband-36mm.jpg)
Baader
Filter SII CMOS Ultra-Narrowband 36mm
$ 348,-
![Baader Filter SII CMOS Ultra-Narrowband 1,25"](/Produktbilder/normal/70886_1/Baader-Filter-SII-CMOS-Ultra-Narrowband-1-25-.jpg)
Baader
Filter SII CMOS Ultra-Narrowband 1,25"
$ 271,-
![Baader Filter SII CMOS f/2 Ultra-Highspeed 65x65mm](/Produktbilder/normal/70948_1/Baader-Filter-SII-CMOS-f-2-Ultra-Highspeed-65x65mm.jpg)
Baader
Filter SII CMOS f/2 Ultra-Highspeed 65x65mm
$ 590,-
![Baader Filter SII CMOS Ultra-Narrowband 65x65mm](/Produktbilder/normal/70892_1/Baader-Filter-SII-CMOS-Ultra-Narrowband-65x65mm.jpg)
Baader
Filter SII CMOS Ultra-Narrowband 65x65mm
$ 580,-
![Baader Filter SII CMOS f/2 Ultra-Highspeed 1,25"](/Produktbilder/normal/70942_1/Baader-Filter-SII-CMOS-f-2-Ultra-Highspeed-1-25-.jpg)
Baader
Filter SII CMOS f/2 Ultra-Highspeed 1,25"
$ 272,-
![Baader Filter SII CMOS Narrowband 36mm](/Produktbilder/normal/70867_1/Baader-Filter-SII-CMOS-Narrowband-36mm.jpg)
Baader
Filter SII CMOS Narrowband 36mm
$ 178,-
![Baader Filter SII CMOS Narrowband 2"](/Produktbilder/normal/70868_1/Baader-Filter-SII-CMOS-Narrowband-2-.jpg)
Baader
Filter SII CMOS Narrowband 2"
$ 249,-
![Astronomik Filter SII 6nm CCD MaxFR 36mm](/Produktbilder/normal/67155_1/Astronomik-Filter-SII-6nm-CCD-MaxFR-36mm.jpg)
Astronomik
Filter SII 6nm CCD MaxFR 36mm
$ 436,-
![Astronomik Filter SII 12nm CCD MaxFR 2"](/Produktbilder/normal/67134_1/Astronomik-Filter-SII-12nm-CCD-MaxFR-2-.jpg)
Astronomik
Filter SII 12nm CCD MaxFR 2"
$ 436,-
![Astronomik Filter SII 12nm CCD Clip Nikon XL](/Produktbilder/normal/62352_1/Astronomik-Filter-SII-12nm-CCD-Clip-Nikon-XL.jpg)
Astronomik
Filter SII 12nm CCD Clip Nikon XL
$ 490,-
![Astronomik Filter SII 12nm CCD MaxFR 31mm](/Produktbilder/normal/67140_1/Astronomik-Filter-SII-12nm-CCD-MaxFR-31mm.jpg)
Astronomik
Filter SII 12nm CCD MaxFR 31mm
$ 250,-
![Astronomik Filter SII 12nm CCD MaxFR 36mm](/Produktbilder/normal/67141_1/Astronomik-Filter-SII-12nm-CCD-MaxFR-36mm.jpg)
Astronomik
Filter SII 12nm CCD MaxFR 36mm
$ 272,-
![Astronomik Filter SII 12nm CCD MaxFR 50mm](/Produktbilder/normal/67142_1/Astronomik-Filter-SII-12nm-CCD-MaxFR-50mm.jpg)
Astronomik
Filter SII 12nm CCD MaxFR 50mm
$ 436,-
![Astronomik SII 6nm CCD Clip-Filter EOS R XL](/Produktbilder/normal/67143_1/Astronomik-SII-6nm-CCD-Clip-Filter-EOS-R-XL.jpg)
Astronomik
SII 6nm CCD Clip-Filter EOS R XL
$ 580,-
![Astronomik SII 6nm CCD Clip-Filter EOS M](/Produktbilder/normal/67144_1/Astronomik-SII-6nm-CCD-Clip-Filter-EOS-M.jpg)
Astronomik
SII 6nm CCD Clip-Filter EOS M
$ 348,-
![Astronomik Filter SII 12nm CCD MaxFR Clip Sony alpha 7](/Produktbilder/normal/53748_1/Astronomik-Filter-SII-12nm-CCD-MaxFR-Clip-Sony-alpha-7.jpg)
Astronomik
Filter SII 12nm CCD MaxFR Clip Sony alpha 7
$ 490,-
![Astronomik Filter SII 6nm CCD MaxFR 1,25"](/Produktbilder/normal/67147_1/Astronomik-Filter-SII-6nm-CCD-MaxFR-1-25-.jpg)
Astronomik
Filter SII 6nm CCD MaxFR 1,25"
$ 294,-
![Astronomik Filter SII 6nm CCD MaxFR Clip Canon EOS APS-C](/Produktbilder/normal/67149_1/Astronomik-Filter-SII-6nm-CCD-MaxFR-Clip-Canon-EOS-APS-C.jpg)
Astronomik
Filter SII 6nm CCD MaxFR Clip Canon EOS APS-C
$ 436,-
![Astronomik Filter SII 6nm CCD MaxFR Clip Canon EOS XL](/Produktbilder/normal/67150_1/Astronomik-Filter-SII-6nm-CCD-MaxFR-Clip-Canon-EOS-XL.jpg)
Astronomik
Filter SII 6nm CCD MaxFR Clip Canon EOS XL
$ 760,-
![Astronomik Filter SII 6nm CCD MaxFR Clip Canon EOS R XL](/Produktbilder/normal/67151_1/Astronomik-Filter-SII-6nm-CCD-MaxFR-Clip-Canon-EOS-R-XL.jpg)