This is an old revision of the document!

Filter Wheel Setup and Uses

This is just the standard filter wheel setup used on the Canadian Spectrophotometer Network. Other countries may differ

Filter Wheel 1					Filter Wheel 2
Position	Steps	Attenuation	Filter	Notes	Position	Steps	Filter	Notes
0	320	FP	Film Polarizer		0	0	0	Clear
1	256	2.0	GQD2	Used for most measurements	1	64	0.5	ND1
2	192	3.0	ND6	Not used (Future Autosighting?)	2	128	1	ND2
3	128	0	Clear	Used during FZ, FM	3	192	1.5	ND3
4	64	4.5	GDQ2+2.5	Not Used	4	256	2.0	ND4
5	0	1.7	GDQ1	Used for DT/RS Measurement*	5	320	2.5	ND5

Shown below is the expected DI for filter wheel 1