Filter characteristics

# Filter Slide / Pos	Filter		Size / Thickness [mm]	Type	CW / FWHM [nm](*)	Curve	Comments
#1 /p1	Johnson U		50x50 / 4	shortpass	400		UG1/1mm + BG40/3mm; short W/L/ cutoff defined by CCD
#1 /p2	Johnson B		50x50 / 4	bandpass			GG395/1mm + BG25/1mm + BG39/2mm
#1 /p3	Johnson V		50x50 / 4	bandpass			GG495/2mm + BG39/2mm
#1 /p4	Johnson R		50x50 / 4	bandpass			OG570/2mm + KG3/2mm
#1 /p5	Johnson I		50x50 / 3	longpass	730		RG9/3mm; long W/L cutoff defined by CCD
#2 /p1	H alpha		50x50	interference	656.3 / 8
#2 /p2	SII continuum		50x50	interference	700 / 40
#2 /p3	SII		50x50	interference	673 / 8
#2 /p4	OIII		50x50	interference	501 / 14
#2 /p5	OII		50x50	interference	372 / 8		#two substrate composite
#3 /p1	H beta		50x50	interference	486 / 6		not installed
#3 /p2	Gunn z		50x50	longpass	830		RG830/3mm ; long W/L cutoff defined by CCD --not installed
#4 /p1	G300		50x50	transm. grating	-		grating only, not a grism, 300 grooves/mm, blazed for 600nm

(*) Given as Central Wavelength!/Full Width Half Maximum or cut-on wavelength only for longpass filters or cutoff for shortpass filters.

Long wavelength cut-off defined by CCD properties (~1050nm). Derived from actual measurements where transmission curve is linked, otherwise design values are given.