ING Filter Database Search

[ ING Filters ]To sort by a column click on the column title. Plot of WFC filters. NOVA filters (Stroe et al., 2016, MNRAS, 465, 2916).

Serial
# Name λ_central (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, fingerprint on back side 20140526: Dust specks
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. 20230401: some small liquid droplet/splatter residues
193 WFCHARR 6380 1520 Harris R 83 txt png ps pdf 139 4 ING Y Damage/smudge near centre. Looks like scratch marks. The damage has circular shape and is about 2 fingers in diameter.
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 speckled with dust, and slight oily streakiness on the surface. Chip in a corner position. Fingerprints in the edge
196 WFCO5008 5008 100 Narrow Band [OIII] 5008/100 78 txt png ps pdf 139 10 ING Y There are several small white dots (<1mm) that cannot be removed by cleaning. Put new padding around filter to prevent movement inside holder.
197 WFCH6568 6568 95 Narrow Band Halpha 6568/95 91 txt png ps pdf 139 10.1 ING Y The substrate coating is damaged around the very edge of the filter (~3-4mm). Dust specks on the filter Mark from cleaning spray
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 Appear to be several flecks over the filter that are transparent (look like some film has peeled off).
200 WFCStrB 4695 210 Stromgren b 83 txt png ps pdf 139 8.9 ING Y Coating on re verse side badly scratched all over, nearly gone from ~3-4 cm patch off centre some small grains
201 WFCStrY 5505 240 Stromgren y 77 txt png ps pdf 139 9 ING Y
204 WFCRGOU 3640 643 RGO U 62 txt png ps pdf 139 8.2 ING Y Some grease stains. Please ensure flat field calibration data is taken on each run. Such data from previous runs may not be valid due to changing transmission and frequent repositioning of filter during servicing.
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 specks 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. Blue coating on one side (facing instrument) has scratched area off-centre about 15 mm diameter.
211 WFCO5027 5027 60 Narrow Band OIII 5027/60 76 txt png ps pdf 139 10.6 ING Y Darker area, resembling edge chip but no surface damage apparent, 1 cm elliptical near edge.
212 WFCS6725 6725 80 Narrow Band SII 6725/80 85 txt png ps pdf 139 10.6 ING Y Extensive scratches on non-relfective (red) side, may cause scattered light but no such effects reported. Should be controlled using flat fields. Fingerprints on edges of reflective side largely cleaned off.
214 WFCSloanR 6240 1347 Sloan Gunn R 90 txt png ps pdf 139 … ING Y Some minor fingerprints/smudges few dust grains
215 WFCSloanI 7743 1519 Sloan Gunn I 94 txt png ps pdf 139 … ING Y Small bubble/mark in centre 20140526: Some specks and one of the rubber supports is coming out
220 WFCSloanG 4846 1285 Sloan Gunn g 90 txt png ps pdf 139 5.6 ING Y Liquid-like fringing pattern around edge, as if coating is wearing off. 20131207: the liquid-like marking has extended. 20161017 - rotated filter 45 degrees in mount to move leaking spot off the CCD. This was decided in consultation with UVEX. 20170313 - rotated filter 180 degrees in mount to correct wrong leak location following feedback from UVEX project. Fringe-like pattern covering about half of one of the sides of the filter
222 WFCClear 6000 4000 Clear Clear … … 139 … ING Y 20230511 There is no physical filter for this. The local database identifies an Empty position as "Empty".
223 WFCWash51 5143 154 Washington 51 88 txt png ps pdf 139 6 Private N The filter is at present unmounted. Sufficient notice must be given if the filter is to be used.
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 some dirt on edges
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. In the blue side of the filter there are small red dots of about 1 mm that seem to be stuck.
227 WFCED337 6657 80 Narrow Band … 89 txt png ps pdf 139 4.3 ING Y Very minor marks, but no fingerprints within clear aperture.
228 WFCED336 6800 92 Narrow Band Halpha 6800/92 95 txt png ps pdf 139 4.3 ING Y Dust specks observed
229 WFCHeI 5870 40 Narrow Band … … … 139 4.3 ING Y
236 NOVA782HA 7839 110 Narrow Band H 88 txt png ps pdf 139 8 Private Y Tiny dust which couldn"t be removed
237 NOVA804HA 8038.5 110 Narrow Band H 84 txt png ps pdf 139 8 Private Y
238 NOVA392 3918 52 Narrow Band … 55 txt png ps pdf 134 8 Private Y One chip near edge, 2mm inward. Rough looking edges may in fact be glue for mounting ring. Some pointlike defects may be new, from handling. Reflective mount ring is not masked - please look out for possible effects. Another smaller chip on the same side of the filter (20140324)
239 NOVA7941 7941 150 Narrow Band … 84 txt png ps pdf 139 5 Private Y
240 NOVA7743 7743 150 Narrow Band … 86 txt png ps pdf 139 5 Private Y Filter is loose in its mount and also loose in the filer wheel.
241 NOVA8089 8089 150 Narrow Band … 81 txt png ps pdf 139 4.9 Private Y [ps 2.06.20016] Tiny dust which couldn"t be removed. Filter seems to be a bit loose in the filter wheel. [jma, 15/10/2015] Filter fixed and made available again. [jma, 06/08/2015] This filter has a faulty pin (see fault report 21901). [nom, 21/8] Filter stored in wooden box while mount is modified. Please advise in advance if filter is requested.

Serial #	Name	λ_central (Å)	FWHM (Å)	System	Band	Throughput		Size (mm)	Thickness (mm)	Owner	Available	Cosmetics
Serial #	Name	λ_central (Å)	FWHM (Å)	System	Band	Peak (%)	Plots	Size (mm)	Thickness (mm)	Owner	Available	Cosmetics
191	WFCHARB	4298	1065	Harris	B	66	txt png ps pdf	139	4	ING	Y	Scratches in centre of filter, fingerprint on back side 20140526: Dust specks
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. 20230401: some small liquid droplet/splatter residues
193	WFCHARR	6380	1520	Harris	R	83	txt png ps pdf	139	4	ING	Y	Damage/smudge near centre. Looks like scratch marks. The damage has circular shape and is about 2 fingers in diameter.
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 speckled with dust, and slight oily streakiness on the surface. Chip in a corner position. Fingerprints in the edge
196	WFCO5008	5008	100	Narrow Band	[OIII] 5008/100	78	txt png ps pdf	139	10	ING	Y	There are several small white dots (<1mm) that cannot be removed by cleaning. Put new padding around filter to prevent movement inside holder.
197	WFCH6568	6568	95	Narrow Band	Halpha 6568/95	91	txt png ps pdf	139	10.1	ING	Y	The substrate coating is damaged around the very edge of the filter (~3-4mm). Dust specks on the filter Mark from cleaning spray
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	Appear to be several flecks over the filter that are transparent (look like some film has peeled off).
200	WFCStrB	4695	210	Stromgren	b	83	txt png ps pdf	139	8.9	ING	Y	Coating on re verse side badly scratched all over, nearly gone from ~3-4 cm patch off centre some small grains
201	WFCStrY	5505	240	Stromgren	y	77	txt png ps pdf	139	9	ING	Y
204	WFCRGOU	3640	643	RGO	U	62	txt png ps pdf	139	8.2	ING	Y	Some grease stains. Please ensure flat field calibration data is taken on each run. Such data from previous runs may not be valid due to changing transmission and frequent repositioning of filter during servicing.
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 specks 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. Blue coating on one side (facing instrument) has scratched area off-centre about 15 mm diameter.
211	WFCO5027	5027	60	Narrow Band	OIII 5027/60	76	txt png ps pdf	139	10.6	ING	Y	Darker area, resembling edge chip but no surface damage apparent, 1 cm elliptical near edge.
212	WFCS6725	6725	80	Narrow Band	SII 6725/80	85	txt png ps pdf	139	10.6	ING	Y	Extensive scratches on non-relfective (red) side, may cause scattered light but no such effects reported. Should be controlled using flat fields. Fingerprints on edges of reflective side largely cleaned off.
214	WFCSloanR	6240	1347	Sloan Gunn	R	90	txt png ps pdf	139	…	ING	Y	Some minor fingerprints/smudges few dust grains
215	WFCSloanI	7743	1519	Sloan Gunn	I	94	txt png ps pdf	139	…	ING	Y	Small bubble/mark in centre 20140526: Some specks and one of the rubber supports is coming out
220	WFCSloanG	4846	1285	Sloan Gunn	g	90	txt png ps pdf	139	5.6	ING	Y	Liquid-like fringing pattern around edge, as if coating is wearing off. 20131207: the liquid-like marking has extended. 20161017 - rotated filter 45 degrees in mount to move leaking spot off the CCD. This was decided in consultation with UVEX. 20170313 - rotated filter 180 degrees in mount to correct wrong leak location following feedback from UVEX project. Fringe-like pattern covering about half of one of the sides of the filter
222	WFCClear	6000	4000	Clear	Clear	…	…	139	…	ING	Y	20230511 There is no physical filter for this. The local database identifies an Empty position as "Empty".
223	WFCWash51	5143	154	Washington	51	88	txt png ps pdf	139	6	Private	N	The filter is at present unmounted. Sufficient notice must be given if the filter is to be used.
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	some dirt on edges
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. In the blue side of the filter there are small red dots of about 1 mm that seem to be stuck.
227	WFCED337	6657	80	Narrow Band	…	89	txt png ps pdf	139	4.3	ING	Y	Very minor marks, but no fingerprints within clear aperture.
228	WFCED336	6800	92	Narrow Band	Halpha 6800/92	95	txt png ps pdf	139	4.3	ING	Y	Dust specks observed
229	WFCHeI	5870	40	Narrow Band	…	…	…	139	4.3	ING	Y
236	NOVA782HA	7839	110	Narrow Band	H	88	txt png ps pdf	139	8	Private	Y	Tiny dust which couldn"t be removed
237	NOVA804HA	8038.5	110	Narrow Band	H	84	txt png ps pdf	139	8	Private	Y
238	NOVA392	3918	52	Narrow Band	…	55	txt png ps pdf	134	8	Private	Y	One chip near edge, 2mm inward. Rough looking edges may in fact be glue for mounting ring. Some pointlike defects may be new, from handling. Reflective mount ring is not masked - please look out for possible effects. Another smaller chip on the same side of the filter (20140324)
239	NOVA7941	7941	150	Narrow Band	…	84	txt png ps pdf	139	5	Private	Y
240	NOVA7743	7743	150	Narrow Band	…	86	txt png ps pdf	139	5	Private	Y	Filter is loose in its mount and also loose in the filer wheel.
241	NOVA8089	8089	150	Narrow Band	…	81	txt png ps pdf	139	4.9	Private	Y	[ps 2.06.20016] Tiny dust which couldn"t be removed. Filter seems to be a bit loose in the filter wheel. [jma, 15/10/2015] Filter fixed and made available again. [jma, 06/08/2015] This filter has a faulty pin (see fault report 21901). [nom, 21/8] Filter stored in wooden box while mount is modified. Please advise in advance if filter is requested.