# FILTER TURRET SETTING ALIAS LIST
2026-8-25
ALIAS NAME	FILTER1	FILTER2	FILTER3
# Imaging
# BB Filters etc
DEF_DARK	NOP	NOP	BP
DEF_IMY	Y	CSLM	HOLE
DEF_IMJ	J	CSLM	HOLE
DEF_IMWIDEJ	WIDEJ	CSLM	HOLE
DEF_IMH	H	CSLM	HOLE
DEF_IMKS	KS	CSLM	HOLE
# MB filters
DEF_IMMBJ1	J	J1H1K1	HOLE
DEF_IMMBWJ1	WIDEJ	J1H1K1	HOLE
DEF_IMMBJ2	J	J2H2K2	HOLE
DEF_IMMBWJ2	WIDEJ	J2H2K2	HOLE
DEF_IMMBH1	H	J1H1K1	HOLE
DEF_IMMBH2	H	J2H2K2	HOLE
DEF_IMMBK1	KS	J1H1K1	HOLE
DEF_IMMBK2	KS	J2H2K2	HOLE
DEF_IMMBK3	MBK3	CSLM	HOLE
DEF_IMMBK4	HOLE	CSLM	MBK4
# NB filters
DEF_IMNB119	HOLE	CSLM	NB119
DEF_IMFE2	FE2	CSLM	HOLE
DEF_IMNB1550	NB1550	CSLM	HOLE
DEF_IMNB1657	HOLE	NB1657	HOLE
DEF_IMH2O_F3	H2O_F3	CSLM	HOLE
DEF_IMH2	H2	CSLM	HOLE
DEF_IMBRG	BRG	CSLM	HOLE
DEF_IMBRG_ON	KS	CSLM	BRG_ON
DEF_IMBRG_OFF	HOLE	CSLM	BRG_OFF
DEF_IMNB2071	HOLE	NB2071	HOLE
DEF_IMNB2083	HOLE	NB2083	HOLE
DEF_IMNB2095	HOLE	NB2095	HOLE
DEF_IMNB2315	HOLE	NB2315	HOLE
# Pupil Viewer (Engineering Purpose)
DEF_PV	HOLE	CSL	PV
* Note: ND filter and K-cont filter were retired in 2020. ND filter is still available on request. Contact the SA at least ~1 yr before use.
# Spectroscopy				Coverage(um)*1
DEF_HK500	HOLE	OC_HK	HK500	1.3 - 2.3
DEF_HK500LONG	HOLE	OC1_3	HK500	1.3 - 2.5: w more thermal BG.
DEF_HK500KS	KS	CSLM	HK500	2.0 - 2.3: less thermal BK than HK500K
DEF_ZJ500	HOLE	OC_ZJ	ZJ500	0.9 - 1.78
DEF_ZJ500HOLE	HOLE	CSLM	ZJ500	0.9 - (but 2nd order contaminates beyond 1.8um)
DEF_VPH_Y	HOLE	CSLM	VPH_Y	0.9 - 1.15: longer side determined by detector edge.
DEF_LS_J	HOLE	OC_ZJ	LS_J	1.09 - 1.39  (determined by detector edges)
DEF_LS_H	HOLE	OC_HK	LS_H	1.43 -1.82  (determined by detector edges)
DEF_VB_K	HOLE	OC_HK	VB_K	1.8 - 2.3: shorter side defined by detector edge. Less thermal BG.
DEF_VB_KLONG	HOLE	OC1_3	VB_K	1.8 - 2.5: shorter side defined by detector edge.
DEF_VB_KS	KS	CSLM	VB_K	2.0 - 2.3
* Note 1: the values are defined by filters. The actual spectra may be cut off by detector edges.
* Note 2: R1300 was retired in 2020 due to microcrack issue.
* Note 3: VPH_J & VPH_H Grisms were replaced to LS_J and LS_H, respectively, in 2020.
* Note 4: You may also use NB/MB filters with grisms. Ask SA if necessary.
###  Special Setting for Ch1-Ch2 Independent Filter/Grisms: upper=ch1 lower=ch2 ###
# Ch1 = Imaging for Monitor, Ch2 = Spectroscopy
DEF_HK500WIN1	H2	CSLM	HOLE
	HOLE	OC_HK	HK500
DEF_HK500LONGWIN1	H2	CSLM	HOLE
	HOLE	OC1_3	HK500
DEF_ZJ500WIN1	HOLE	CSLM	NB119
	HOLE	OC_ZJ	ZJ500
DEF_ZJ500HOLEWIN1	HOLE	CSLM	NB119
	HOLE	CSLM	ZJ500
DEF_VPH_YWIN1	Y	CSLM	HOLE
	HOLE	CSLM	VPH_Y
DEF_LS_J_WIN1	HOLE	OC_ZJ	NB119
	HOLE	OC_ZJ	LS_J
DEF_LS_H_WIN1	FE2	CSLM	HOLE
	HOLE	OC_HK	LS_H
DEF_VB_KWIN1	H2	CSLM	HOLE
	HOLE	OC_HK	VB_K
DEF_VB_KLONGNWIN1	H2	CSLM	HOLE
	HOLE	OC1_3	VB_K
* NOTE: When you take dome flats, add "B" at the end of the definition part. It will put blank plate (cover) to the imaging channel to protect detector.
# Ch2 = Imaging for Monitor, Ch1 = Spectroscopy
DEF_HK500WIN2	HOLE	OC_HK	HK500
	H2	CSLM	HOLE
DEF_HK500LONGWIN2	HOLE	OC1_3	HK500
	H2	CSLM	HOLE
DEF_ZJ500WIN2	HOLE	OC_ZJ	ZJ500
	HOLE	CSLM	NB119
DEF_ZJ500HOLEWIN2	HOLE	CSLM	ZJ500
	HOLE	CSLM	NB119
DEF_VPH_YWIN2	HOLE	CSLM	VPH_Y
	Y	CSLM	HOLE
DEF_LS_J_WIN2	HOLE	OC_ZJ	LS_J
	HOLE	OC_ZJ	NB119
DEF_LS_H_WIN2	HOLE	OC_HK	LS_H
	FE2	CSLM	HOLE
DEF_VB_KWIN2	HOLE	OC_HL	VB_K
	H2	CSLM	HOLE
DEF_VB_KLONGNWIN2	HOLE	OC1_3	VB_K
	H2	CSLM	HOLE
* NOTE: When you take dome flats, add "B" at the end of the definition part. It will put blank plate (cover) to the imaging channel to protect detector.
Update History:
2016-10-10: Default order-sorting filter for VPHJ is changed from OC_ZJ to HOLE+CSL. This mode has been effective since the October observations.
2016-11-15: The alias for VPH filters has changed to keep their consistency with grism name. e.g., DEF_VPHJ --> DEF_VPH_J etc.
2016-11-15: TheNB filters used with the VPH_H grism with the window imaging has changed from Fe2 to NB119, as the sky for Fe2 is too bright.
2020-06-30: VPH-Y and R1300 Grisms were retired in 2020. Instead, LS_J and LS_H Grisms were installed in 2020. All the related aliases were updated.
2020-09-17: The filter for LS_J has changed from CSLM to OC_ZJ to suppress the ghost.
2023-2-5: VPH-Y is back, VPH-J/H are removed. A confusion on VPH_HK and VPH_K are cleared now.
2023-02-05: The retirement of K-cont and ND were reflected to the table.
2024-03-05: removed remaining VPHJ/H part. Editted VPH_K part following the change of the definition. Added VB_K-related definition. Removed th BP-adding definition and put the note for it.
2025-08-08: IMMBJ2, IMMBH2, IMMBK2, BRG_ON, BRG_OFF are added. The defs related to VPHK are all removed due to retire.
2026-04-21: The BRG_OFF is now without Ks for T1T4.
2026-04-27: Some mistakes! OC1_3, NB1550, and MBK3, and J2H2K2 information is corrected.
2026-08-25: Some new filters (WIDEJ, J1H1K1, H2O_F3) are added, CO is retired, the positioin of NB119 are changed.