Various common usage filters were tested with a spectrophotometer*
to determine their transmission with regard to air. The results
are presented as transmission curves according to the wavelength
from 300 to 900 nm. These curves can probably vary slightly from
a filter to the other one.
Astronomik filters : L,
R, V, B,
OIII,
CLS
Baader filters : IR/UV-CUT, OIII
Meade filters : 47
Murnaghan filters : IR-C, IR70, IR100
Schüler filters : UV, IR78, IR85
Windows of cam ASI 120 MM and MC
Filter
for "Luminosity" in "LRGB" acquisition . Eliminate UV
and IR. Advised behind astrosolar D=5.
![](images/f-L-astronomik.gif)
Filter
for "Luminosity" in "LRGB" acquisition . Eliminate UV and IR. Advised
behind astrosolar D=5.
![](images/f-UVIRcut-baader.gif)
Filter
for Red layer in "LRGB" acquisition.
![](images/f-R-astronomik.gif)
Filter for Green layer in "LRGB" acquisition.
![](images/f-V-astronomik.gif)
Filter for Blue layer in "LRGB" acquisition.
![](images/f-B-astronomik.gif)
Violet
filter. Attention, IR is transmitted what can be annoying
for CCD using.
![](images/f-47-meade4000.gif)
Filter
essentially dedicated to the observation of the planetary nebula.
![](images/f-OIII-astronomik.gif)
anti-pollution filter for EOS (clip filter)
![](images/f-CLS-astronomik.gif)
Filter
essentially dedicated to the observation of the planetary nebula. (Very
selectif)
![](images/f-OIII-baader.gif)
Near
UV Filter
![](images/f-UV-Schuler.gif)
Filter
IR78 - near IR
![](images/f-IR78-Schuler.gif)
Filter
IR85 - IR
![](images/f-IR85-Schuler.gif)
Filter IR-C Murnaghan
![](images/f-IR-C.gif)
Filter
IR-70 Murnaghan
![](images/f-IR70-murnaghan.gif)
Filter
IR-100 Murnaghan.
![](images/f-IR100-murnaghan.gif)
Windows of cam ASI 120 MM and MC.
![](images/fenetres ASI 120.jpg)
* Dual beam spectrophotometer,
holographic grating and photomultiplier. Wavelength accuracy = 0.5 nm
and bandwidth = 2 nm
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