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
Baader filters : IR/UV-CUT, OIII
Meade filters : 47
Murnaghan filters : IR-C, IR70, IR100
Schüler filters : UV, IR78, IR85

Filter for "Luminosity" in "LRGB" acquisition . Eliminate UV and IR. Advised behind astrosolar D=5.

Filter for "Luminosity" in "LRGB" acquisition . Eliminate UV and IR. Advised behind astrosolar D=5.

Filter for Red layer in "LRGB" acquisition.

Filter for Green layer in "LRGB" acquisition.

Filter for Blue layer in "LRGB" acquisition.

Violet filter. Attention, IR is transmitted what can be annoying for CCD using.

Filter essentially dedicated to the observation of the planetary nebula.

Filter essentially dedicated to the observation of the planetary nebula. (Very selectif)

Near UV Filter

Filter IR78 - near IR

Filter IR85 - IR

Filter IR-C Murnaghan

Filter IR-70 Murnaghan

Filter IR-100 Murnaghan.

* Dual beam spectrophotometer, holographic grating and photomultiplier. Wavelength accuracy = 0.5 nm and bandwidth = 2 nm