ING Filter Database Search

Serial #	Name	λcentral (Å)	FWHM (Å)	System	Band	Throughput		Size (mm)	Thickness (mm)	Owner	Available	Cosmetics
						Peak (%)	Plots
191	WFCHARB	4298	1065	Harris	B	66	txt png ps pdf	139	4	ING	Y	Scratches in centre of filter, and 3 smudges.
192	WFCHARV	5425	975	Harris	V	88	txt png ps pdf	139	4	ING	Y	Tiny specks of dust. Also two small air bubbles in coating.
193	WFCHARR	6380	1520	Harris	R	83	txt png ps pdf	139	4	ING	Y	Damage/smudge near centre
194	WFCRGOI	8063	…	RGO	I	95	txt png ps pdf	139	4.1	ING	Y	Smudge in centre (about the size of a euro) where filter substrate has been damaged.
195	WFCRGOZ	8763	…	RGO	Z	96	txt png ps pdf	139	4.1	ING	Y	Looks a little specled with dust, and slight oily streakiness on the surface. Chip in a corner position.
196	WFCO5008	5008	100	Narrow Band	[OIII] 5008/100	78	txt png ps pdf	139	10	ING	Y
197	WFCH6568	6568	95	Narrow Band	Halpha 6568/95	89	txt png ps pdf	139	10.1	ING	Y	The substrate coating is damaged around the very edge of the filter (~3-4mm).
198	WFCStrU	3480	330	Stromgren	U	47	txt png ps pdf	139	8.7	ING	Y	The coating on the side facing the detector is damaged around the very edge of the filter (max~3-4mm). This appears to be opaque rather than transmitting (observed by holding up to the sun). The sky side may be affected by a fog in the central area but no structures observed that would give rise to artefacts reported in flat field.
199	WFCStrV	4110	150	Stromgren	v	67	txt png ps pdf	139	9	ING	Y
200	WFCStrB	4695	210	Stromgren	b	83	txt png ps pdf	139	8.9	ING	Y	Coating seriously scratched away - near centre.
201	WFCStrY	5505	240	Stromgren	y	77	txt png ps pdf	139	9	ING	Y
204	WFCRGOU	3581	638	RGO	U	80	txt png ps pdf	139	8.6	ING	Y	Topped up with CuSo4 solution (<1 ml). Air bubble <1mm diameter. From clear glass side, throughput appears non-uniform (mottling reported earlier).
206	WFCHe4686	4686	100	Narrow Band	HeII 4686/100	78	txt png ps pdf	139	4.8	ING	Y	Minor scratches in centre of one side of filter Filter seems to have a number of large dust specs on.
207	WFCO3727	3727	100	Narrow Band	OII 3727/100	43	txt png ps pdf	139	6.9	ING	Y
208	WFC9190	9190	50	Narrow Band	Halpha 9190/50	…	…	139	10.1	ING	Y	Minor scratches (2) away from centre
209	WFC8160	8160	50	Narrow Band	Halpha 8160/50	89	txt png ps pdf	139	10.1	ING	Y
210	WFCKPB	4407	1022	Kitt Peak	B	84	txt png ps pdf	139	…	ING	Y	Slight defect top right corner
211	WFCO5027	5027	60	Narrow Band	OIII 5027/60	76	txt png ps pdf	139	10.6	ING	Y
212	WFCS6725	6725	80	Narrow Band	SII 6725/80	85	txt png ps pdf	139	10.6	ING	Y	Surface scratches but optically ok, two small fingerprints on edge of filter
214	WFCSloanR	6240	1347	Sloan Gunn	r	90	txt png ps pdf	139	…	ING	Y	Some minor fingerprints/smudges
215	WFCSloanI	7743	1519	Sloan Gunn	i	94	txt png ps pdf	139	…	ING	Y	Small bubble/mark in centre
220	WFCSloanG	4846	1285	Sloan Gunn	g	90	txt png ps pdf	139	…	ING	Y	Strange liquid-like marking around edge, as if substrate is wearing off
222	WFCClear	6000	4000	Clear	Clear	…	…	139	…	ING	Y	Empty filter holder
224	WFCStrHbW	4861	170	Stromgren	Hbeta 4861/170	…	…	139	…	ING	Y	Slight smudge near edge. Also the Filter rattles a lot in the holder. It seems secure, but may be moving by upto ~0.5mm which could possibly produce less than optimal focus and positioning when of different parts of the sky?
225	WFCStrHbN	4861	30	Stromgren	Hbeta 4861/30	…	…	139	…	ING	Y
226	WFCED338	6886	100	Narrow Band	…	88	txt png ps pdf	139	4.3	ING	Y	Rectangular smudge off centre - seems to be permanent damage, could not be cleaned
227	WFCED337	6657	79	Narrow Band	…	…	…	139	4.3	ING	Y
228	WFCED336	6800	92	Narrow Band	…	…	…	139	4.3	ING	Y
229	WFCHeI	5870	40	Narrow Band	…	…	…	139	4.3	ING	Y
223	WFCWash51	5085	1050	Washington	51	…	…	139	…	Private	N	EXTERNAL USER FILTER. NOT AVAILABLE!
236	NOVA782HA	7839	110	Narrow Band	H	88	txt png ps pdf	139	8	Private	Y
237	NOVA804HA	8038.5	110	Narrow Band	H	84	txt png ps pdf	139	8	Private	Y