Passfilter sind nur für Licht eines bestimmten Wellenlängenbereichs durchlässig. Dieser Durchlassbereich ist bei astrometrischen Filtern sehr genau definiert. Im Unterschied zu Linienfiltern ist der Durchlassbereich wesentlich breiter und nicht auf eine bestimmte Spektrallinie abgestimmt. Ziel der astrometrischen Passfilter ist nicht die Unterdrückung der Lichtverschmutzung. Solche Filter finden Sie unter der Bezeichnung CLS oder UHC.
Unter Passfilter sollen hier auch die Filter verstanden werden, die langwelliges Infrarotlicht (IR) oder kurzwelliges UV-Licht durchlassen, aber nicht das für unsere Augen sichtbare Licht. So sind IR-Passfilter in der Planetenfotografie beliebt, da sich im langwelligen Bereich das Seeing der irdischen Atmosphäre nicht so störend bemerkbar macht. Falls der Kamerasensor für diesen langwelligen Bereich empfindlich ist, gelingt so eine schärfere Aufnahme als im sichtbaren Licht.

ZWO
IR-Passfilter 1,25"
$ 36,90

Baader
Filter UBVRI Bessel photometrisch SET 1,25"
$ 740,-

Optolong
Filter Clear Focusing 2"
$ 73,-

Baader
Filter SLOAN/SDSS (ugriz') Photometric 2"
$ 1.440,-

Baader
Filter UBVRI Bessel B 2"
$ 207,-

Astronomik
Filter ProPlanet 642 BP 1,25"
$ 83,-

Astronomik
IR-Passfilter ProPlanet 742, 1,25"
$ 62,-

Baader
Filter UBVRI Bessel V 2"
$ 209,-

Baader
1,25" IR - Passfilter (685 nm) (planoptisch poliert)
$ 95,-

Astronomik
IR-Passfilter ProPlanet 742, EOS XL Clip-Filter
$ 135,-

Baader
Filter UBVRI Bessel 65x65mm
$ 1.530,-

Astronomik
IR-Passfilter ProPlanet 742, 2"
$ 125,-

Baader
Filter UBVRI Bessel B 1,25"
$ 147,-

Astronomik
IR-Passfilter ProPlanet 807 T2
$ 104,-

Astronomik
Filter ProPlanet 807 IR-Pass 1,25"
$ 62,-

Baader
Filter UBVRI Bessel I 2"
$ 267,-

Hutech Astro
Filter Sightron IR 640 Pro II 1.25"
$ 83,-

Baader
Filter UBVRI Bessel R 2"
$ 204,-

Baader
Filter SLOAN/SDSS (ugriz') Photometric 1,25"
$ 840,-

STC
Infrarot Clip-Filter 590nm Sony
$ 167,-

STC
Infrarot Clip-Filter 720nm Sony
$ 167,-

STC
Infrarot Clip-Filter 850nm Sony
$ 167,-

Baader
Filter SLOAN/SDSS r' Photometric 1,25"
$ 156,-

Baader
Filter UBVRI Bessel V 50x50mm
$ 253,-

Baader
Filter UBVRI Bessel B 50x50mm
$ 252,-

Baader
Filter UBVRI Bessel U 100x100mm
$ 760,-

Baader
Filter UBVRI Bessel I 100x100mm
$ 750,-

Baader
Filter SLOAN/SDSS (ugriz') Photometric 65x65mm
$ 2.510,-

Baader
Filter UBVRI Bessel B 100x100mm
$ 710,-

Baader
Filter UBVRI Bessel R 100x100mm
$ 710,-

Baader
Filter UBVRI Bessel V 100x100mm
$ 710,-

Baader
2" IR - Passfilter (685 nm) (planoptisch poliert)
$ 150,-

Baader
Filter UBVRI Bessel V 36mm
$ 180,-

Baader
Filter UBVRI Bessel B 36mm
$ 179,-

Astronomik
Filter ProPlanet 642 BP EOS XL Clip
$ 156,-
