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Filters in order of increasing wavelength

Click on the NOT number to see the filter curve. Click here for ASCII curves.

NOT # Size mm Thickness mm Name nm FWHM nm Tmax % Marking on filter edge CommentsCosmetics: C=clean, UD=undamaged
114 90r
u Stromgren 347 38 55051 0245 IJAF/CUO filter: please contact staffC, UD
82 60r 5.2 u' 350 6578U-BANDSDSS set C, UD
15 60r
u 351 3452350BP33 36644.9451Strömgren u C, UD
109 100r
u' SDSS 353 55 74

C, UD
97 60r 8.8 Fynbo 356.7 356.72.038356/2nm 3396redshifted Lyman alpha C, UD
98 60r
Fynbo 357.8 357.82.5

redshifted Lyman alpha C, UD
104 100r
U' Bessell 361 62 66
conservative & bluer Bessell U C, UD
7 60r
U 362 6060U 9506Bessell U with rlb, p C, UD
122 100r
Iceland 363.0 362.75.8 51U-ICELAND 363Univ of Iceland filter: please contact staff C, UD
6 60r 5.0 U 363 5662U 5172Bessell U with rlb, p 2 small stains on coating. UD
1 60r
U 366 5252(up arrow) CFG 1 5295HiRAC special with rlb
99 60r 7.2 Fynbo 369.4 369.44.061369.4/4.0nm 1401redshifted Lyman alpha C, UD, flatfield not flat
30 51s
[OII] 372.65.125ANDV2191[OII] line C, UD
88 60r 5.1 [OII] 372.83.227327.8/3.0 20303[OII] line C, UD; has two big finger prints
130 75s 8.0 Fynbo 381 381.28.038 381.2NB8 60232, Omega, University of Copenhagen
C, UD
31 51s
[NeIII] 387.14.234ANDV2192[NeIII] line C, UD
23 60r 10.1 [SII] 403.33.546404.01M2.0 1599Miller blue C, UD. Rim transparent
121 100r
Iceland 405.0 405.85.8 64U-ICELAND 405Univ of Iceland filter: please contact staff C, UD
24 60r 10.0 [SII] 406.63.048407.31M2.0 1598Miller blue C, UD. Rim transparent
32 51s
H(delta) 410.24.245ANDV2193H(delta) line C, UD
131 75s 8.0 Fynbo 410 410.26.053 410.2PB6 60231, Omega, University of Copenhagen
C, UD
16 60r
v 411 1866411/17 12918Strömgren v Coating slightly fogged. UD
63 51s
v 411.718.862ANDV2110Strömgren v Clean, one minute chip on edge
115 90r
v Stromgren 412 18 58521 0114 IJAF/CUO filter: please contact staffC, UD
105 100r
B Bessell 428 108 73

C, UD
2 60r
B 428 10562?HiRAC special
8 60r 5.1 B 429 10661B 4914Bessell B Coating stained both sides
27 51s
B 432.4106.653?B filter
33 51s
H(gamma) 434.52.948ANDV2194H(gamma) line C, UD
74 60r
B 440 10068B-BAND 16888Bessel B C, UD
34 51s
HeI 447.65.645ANDV2195HeI line C, UD. Rim transparent
17 60r
b 467 1889468/18 12919Strömgren b C, UD
116 90r 6.0 b Stromgren 468 19 66277 0117 IJAF/CUO filter: please contact staffC, UD
79 60r 4.8 HeII 468.73.569468.6/3.0 18322HeII line Coating slightly fogged. UD
35 51s
HeII 469.65.760ANDV2196HeII line C, UD. Rim transparent
36 51s
b 472.019.874ANDV2111Strömgren b C, UD
120 100r
g' 480 14592Custom Scientific SDSS g' SDSS set C, UD
83 60r 5.0 g' 480 14592G-BAND 20573SDSS set C, UD, does not fit in ALFOSC
118 90r 6.0 H-beta narrow 485.33.7 51275 0110 IJAF/CUO filter: please contact staffC, UD
19 60r 5.8 485.44.070486.1NB3.5 36614-9451Hß narrow
20 60r 5.7 485.413.381486.1BP14 36613-9451Hß wide C, UD. Rim transparent
119 90r 6.6 H-beta wide 486.814.358274 0111 IJAF/CUO filter: please contact staffC, UD
37 51s
487.34.558ANDV2197 C, UD. Rim transparent
39 51s 6.1 487.43.957ANDV2114Hß narrow C, UD. Coating fogged at edge
38 51s
488.910.274ANDV2113Hß wide C, UD
129 60r 6.35 (rim) Hß redshifted 489.55.0Custom Scientific 489.5/5 73268Hß redshifted, G. Ostlin's filter: contact staff C, UD
113 51s
GO 4942/51 494.25.186Ostlin #113G. Ostlin Hß C, UD
90 60r 4.7 [OIII] 500.73.082500.7/3.0 18320[OIII] line C, UD. Rim transparent
40 51s 6.2 [OIII] 501.04.356ANDV2198[OIII] line C, UD
65 75s
[OIII] 504.53.7585040/35-SF[OIII]rs 4nm C, UD
41 51s
[OIII] 506.14.969ANDV2199[OIII]rs 5nm C, UD. Coating slightly spotty
66 75s
[OIII] 510.53.7555100/35-SF[OIII]rs 10nm C, UD
42 51s
[OIII] 511.14.959ANDV2200[OIII]rs 10nm C, UD
127 75s

515.64.


C, UD
43 51s
[OIII] 515.94.356ANDV2201[OIII]rs 15nm Clean, small chip in centre
67 75s 9.2 [OIII] 521.410.5775200/100-SF[OIII]rs 20nm Small spots on coating, UD
75 60r
V 530 8085V-BAND 16889Bessel V C, UD
124 51s

532.5


order sorter for ALFOSC grism #13 C, UD
3 60r
V 535 7677?HiRAC special
106 100r
V Bessell 536 89 81

C, UD
28 51s
V-l 539 7160?V-like filter
9 60r 5.0 V 543 10382?Bessell V C, UD
117 90r 6.5 y Stromgren 547 21 58271 0111 IJAF/CUO filter: please contact staffC, UD
18 60r
y 547 22 86549/24 12920Strömgren y Coating slightly fogged. UD
92 60r
Contrast 550 27592E710SP27643Sky contrast C, UD
128 75s

550.74.


C, UD
44 51s
y 551.618.475ANDV2112Strömgren y C, UD. Rim transparent: use in StanCam only
89 60r
[NII] 575.53.063575.5/3.0 18321[NII] line C, UD. Rim transparent
45 51s
HeI 587.95.670ANDV2202HeI line Clean. Small chip at edge. Rim transparent
80 13r
NaD 589.35.089589.3/5 18326NaD line C, UD
110 100r
r' SDSS 618 148 90

C, UD
46 51s
Eu 618.82.549ANDV2810Eu line? C, UD. Ring mounted
84 60r 5.0 r' 625 14094R-BAND 20571SDSS set Clean, small blemish on coating, does not fit in ALFOSC
87 60r 5.4 [OI] 630 3.080630/3 19617[OI] line C, UD
47 51s
[OI] 630.84.577ANDV2203[OI] line Clean, small scratch near edge
4 60r
R 631 12171?HiRAC special
125 100r
HContinuum 633. 26.091?Blue continuum, G.Ístlin's filter: contact staff
48 51s
[OI] 635.34.562ANDV2811[OI] rs 5nm C, UD
10 60r 5.0 R 641 14879?Bessell R C, UD
107 100r
R Bessell 646 124 73

C, UD
76 60r
R 650 13081R-BAND 19237Bessel R C, UD
29 51s 5.6 H 656.011.361?H wide, edge bad
64 51s
H 656.24.668ANDV2115H corner damaged Clean, large chip and stress mark
21 60r 6.2 H 656.43.3666563/30-SFH narrow
22 60r 6.3 H 657.718.0776563/180-SFH wide stiff in FASU holder
78 60r 4.7[NII] 658.33.674658.4/3.0 18324[NII] line Clean, coating spotty. Rim transparent
49 51s
H 661.05.076ANDV2182H rs 5nm C, UD
77 60r 4.9 HContinuum 662.13.966662.0/3.0 18323Red continuum C, UD. Rim transparent
68 75s 9.6 H 664.04.0666638/35-SFH rs 8nm C, UD
50 51s
H 665.35.580ANDV2183H rs 10nm Clean, 10mm chip off edge
70 75s
H 667.05.0726660/45-SFH rs 11nm FILTER BROKEN
69 75s
H 670.03.0506695/20-SFH rs 15nm C, UD
51 51s 6.3 H 670.34.576ANDV2184H rs 15nm C, UD
123 60r 7.0 H [SII] 671.6 5 82Aarhus 671.6BP5 780 0407Univ. of Aarhus: please contact staff C, UD
52 51s
[SII] 672.56.071ANDV2204[SII] line C, UD
91 60r 5.1 [SII] 673.11.071673.1/M1.0 3545[SII] line C, UD. Rim transparent
53 51s
H 674.55.074ANDV2185H rs 20nm C, UD
54 51s 6.3 H 678.84.573ANDV2186H rs 25nm C, UD
14 60r 5.4 Gunn r 680 102866700/950-SFinterference r Two chips of about 7mm at edge
55 51s
H 684.05.070ANDV2187H rs 30nm Worn coating
56 51s
H 688.36.577ANDV2188H rs 35nm C, UD
57 51s
H 692.55.572ANDV2189H rs 40nm C, UD
58 51s
H 696.55.071ANDV2190H rs 45nm Clean, some minute scratches
59 51s
HeI 727.32.559ANDV2812special C, UD
11 60r
I 728 cut-on LP96I 4916Bessell I
60 51s
HeI 750.85.579ANDV2813special C, UD
85 60r 5.1 i' 770 16095I-BAND 20570SDSS set C, UD, does not fit in ALFOSC
111 100r
i' SDSS 771 171 91

C, UD
13 60r 9.0 i 793 170808000/1500-SFinterference i C, UD
12 60r
i 797 15791B800/150 5566interference i
5 60r
i 810 12587?HiRAC special
108 100r
I NOT 817 163 97
interference i C, UD
112 100r
z' SDSS 832 cut-on LP 97

C, UD
86 60r 5.0 z' 840 cut-on LP95Z-BAND 20038SDSS set C, UD
61 51s
?? 892.45.358ANDV2814special C, UD
62 51s
?? 948.05.051ANDV2815special C, UD
81 60r 4.7 [SIII] 953.13.062953.1/3.0 18706[SIII] line C, UD
25 60r 10.0 [SII] 1020 10?1020.01M10.0 1597Miller IR C, UD. Rim transparent
26 60r 10.1 [SII] 1033 10?1033.61M10.0 1596Miller IR C, UD. Rim transparent
NOT # Size mm Thickness mm Name nm FWHM nm Tmax % Marking on filter edge CommentsCosmetics

NOT # Size mm Thickness mm Name Cut-on nm Tmax % Marking on filter edge Comments Cosmetics: C=clean, UD=undamaged
72 100r
UG1
67UG1 standard C, UD
71 100r
BG25-O
84BG25-O standard C, UD
126 51s 5.0WG280 280

cut-on C, UD
94 51s 4.0WG345 356 88
cut-on C, UD
93 51s 4.0GG375 375 88
cut-on C, UD, corner chipped
73 100r
GG385 380 94GG385 cut-on C, UD, use brass spacer ring
10060r 3.0GG420 416 94
cut-on C, UD
10160r
GG475 480 95
cut-on C, UD
10260r
OG515 518 92
cut-on C, UD
10360r
OG575 566 91
cut-on C, UD
95 51s
6750 cut-on674 91
cut-on C, UD
11 60r
I Bessel 728 96I 4916 Bessell I see the above table
96 51s
7750 cut-on776 88
cut-on C, UD
112100r
z' SDSS 832 97
SDSS set see the above table
86 60r
z' SDSS 840 95Z-BAND 20038SDSS set see the above table

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