1. Programs & Projects
  2. Mid-Scale Observatories — Cerro Tololo Inter-American Observatory
  3. Filters
  4. CTIO 3x3-inch and 4x4-inch Filters
  5. CTIO 3x3-inch and 4x4-inch Filters

CTIO 3x3-inch and 4x4-inch Filters

The standard filter size for the 0.9-m is 3x3 inch and 4x4 inch. No other filter sizes available.

There are two filter wheels that can hold up to 8 3x3 inches filters (or 7 plus clear), and one filter wheel which can hold up to 5 4x4 inch filters. 

We do have adaptors to allow the use of 3x3 inches in the 4x4 inch filter wheel.

If you are an observer looking for a filter not listed here, there is a chance that it can be lent from SOAR, please contact your Scientific Observer Support.

SMARTS Consortium: 0.9-meter Telescope

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
5019/50 50.00 5027.00 SMARTS Consortium: 0.9-meter Telescope BLANK 5019/50 5019/50 Size: 4x4 Thick: 7.83
660075-3 69.00 6598.00 SMARTS Consortium: 0.9-meter Telescope BLANK 660075-3 Size: 3x3 Thick: 5.57
660075-4 67.00 6600.00 SMARTS Consortium: 0.9-meter Telescope BLANK 660075-4 Size: 4x4 Thick: 5.57
B Harris set#1 4mts 4185/1030 1030.00 4185.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Harris set#1 4mts 4185/1030 Size: 4x4 Thick: 5.40
B set# 2 Schmidt 4200/1050 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
b Strom.  4x4 4697/196 196.00 4697.00 SMARTS Consortium: 0.9-meter Telescope BLANK b Strom.  4x4 4697/196 b Strom.  4x4 4697/196 Size: 4x4 Thick: 9.85
B Tek set#1 4201/1050 1050.00 4200.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tek set#1 4201/1050 Size: 3x3 Thick: 5.17
B Tek set#2 4202/1050 1050.00 4200.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tek set#2 4202/1050 Size: 3x3
B Tek set#3 4203/1050 1050.00 4200.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tek set#3 4203/1050 Size: 3x3 Thick: 5.26
B Tyson "J" 4357/1665 1665.00 4357.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tyson "J" 4357/1665 Size: 4x4 Thick: 3.65
C Wash 3996/1042 1042.00 3996.00 SMARTS Consortium: 0.9-meter Telescope BLANK C Wash 3996/1042 Size: 3x3 Thick: 8.11
C Wash 4000/1030 1030.00 4000.00 SMARTS Consortium: 0.9-meter Telescope BLANK C Wash 4000/1030 Size: 4x4 Thick: 8.45
Ca H&K line filter 3960/100 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
DDO 51 Wash. set 5130/155 133.00 5121.00 SMARTS Consortium: 0.9-meter Telescope BLANK DDO 51 Wash. set 5130/155 Size: 4x4 Thick: 7.76
g Gunn-T 5118/900 900.00 5118.00 SMARTS Consortium: 0.9-meter Telescope BLANK g Gunn-T 5118/900 g Gunn-T 5118/900 Size: 3x3 Thick: 5.05
Gunn g 4940/700 670.00 4920.00 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4 Thick: 8.95
Gunn i 8120/1500 1600.00 8065.00 SMARTS Consortium: 0.9-meter Telescope BLANK Gunn i 8120/1500 Size: 4x4 Thick: 9.22
Gunn r 6560/900 900.00 6495.00 SMARTS Consortium: 0.9-meter Telescope BLANK Gunn r 6560/900 Size: 4x4 Thick: 9.19
Halpha 656375-3 64.00 6559.00 SMARTS Consortium: 0.9-meter Telescope BLANK Halpha 656375-3 Size: 3x3 Thick: 5.61
Halpha 656375-4 68.00 6567.00 SMARTS Consortium: 0.9-meter Telescope BLANK Halpha 656375-4 Size: 4x4 Thick: 5.54
HST "I" 8300/2500 2560.00 8310.00 SMARTS Consortium: 0.9-meter Telescope BLANK HST "I" 8300/2500 Size: 4x4 Thick: 5.43
HST "V" 5295/1590 1625.00 5292.00 SMARTS Consortium: 0.9-meter Telescope BLANK HST "V" 5295/1590 Size: 4x4 Thick: 5.24
I Gunn-T 8100/1500 1500.00 8100.00 SMARTS Consortium: 0.9-meter Telescope BLANK I Gunn-T 8100/1500 Size: 3X3 Thick: 5.08
I kc set#1 4mts 8075/1500 1500.00 8075.00 SMARTS Consortium: 0.9-meter Telescope BLANK I kc set#1 4mts 8075/1500 Size: 4x4 Thick: 6.19
I kc Tek set#1 8075/1500 1500.00 8075.00 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 3x3 Thick: 6.13
I kc Tek set#2 8118/1415 1415.00 8118.00 SMARTS Consortium: 0.9-meter Telescope BLANK I kc Tek set#2 8118/1415 Size: 3X3
I kc Tek set#3 8067/1485 1485.00 8067.00 SMARTS Consortium: 0.9-meter Telescope BLANK I kc Tek set#3 8067/1485 Size: 3x3 Thick: 6.11
M Wash. 5025/1023 1023.00 5025.00 SMARTS Consortium: 0.9-meter Telescope BLANK M Wash. 5025/1023 Size: 3x3 Thick: 8.08
M Wash. 5040/990 990.00 5040.00 SMARTS Consortium: 0.9-meter Telescope BLANK M Wash. 5040/990 M Wash. 5040/990 Size: 4x4 Thick: 8.25
r Gunn-T 6728/1000 1000.00 6728.00 SMARTS Consortium: 0.9-meter Telescope BLANK r Gunn-T 6728/1000 Size: 3x3 Thick: 5.05
R harris set#1 4mts 6437/1525 1525.00 6437.00 SMARTS Consortium: 0.9-meter Telescope BLANK R harris set#1 4mts 6437/1525 Size: 4x4 Thick: 5.22
R set #2 Schmidt 6437/1525 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
R Tek set #2 6400/1450 1450.00 6400.00 SMARTS Consortium: 0.9-meter Telescope BLANK R Tek set #2 6400/1450 Size: 3x3
R Tek set#1 642571500 1500.00 6425.00 SMARTS Consortium: 0.9-meter Telescope BLANK R Tek set#1 642571500 Size: 3x3 Thick: 5.25
R Tek set#3 6410/1470 1470.00 6410.00 SMARTS Consortium: 0.9-meter Telescope BLANK R Tek set#3 6410/1470 Size: 3x3 Thick: 5.23
SDSS g 4759/1430 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SDSS i 7734/50 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SDSS r 6265/1483 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SDSS u 3513/628 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4X4
SDSS z 9100/1400 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SII 6738/50 50.00 6744.00 SMARTS Consortium: 0.9-meter Telescope BLANK SII 6738/50 Size: 4x4 Thick: 7.97
Supernova 6120/140 135.00 6115.00 SMARTS Consortium: 0.9-meter Telescope BLANK Supernova 6120/140 Size: 3x3 Thick: 7.97
T1 Wash. 6130/590 590.00 6130.00 SMARTS Consortium: 0.9-meter Telescope BLANK T1 Wash. 6130/590 Size: 4x4 Thick: 8.35 .9% leak at 1.2u.
T1 Wash. 6152/625 625.00 6152.00 SMARTS Consortium: 0.9-meter Telescope BLANK T1 Wash. 6152/625 Size: 3x3 Thick: 8.21 1% leak at 1.0u.
U liq. CuSO4 set#1 4mts 3580/610 610.00 3580.00 SMARTS Consortium: 0.9-meter Telescope BLANK U liq. CuSO4 set#1 4mts 3580/610 U liq. CuSO4 set#1 4mts 3580/610 Size: 4x4 Thick: 9.32
U liq. CuSO4 Tek set #1 3575/600 600.00 3575.00 SMARTS Consortium: 0.9-meter Telescope BLANK U liq. CuSO4 Tek set #1 3575/600 U liq. CuSO4 Tek set #1 3575/600 Size: 3x3 Thick: 9.09
U liq. CuSO4 Tek set #2 3570/660 660.00 3570.00 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 3x3
U liq. CuSO4 Tek set#3 36237605 605.00 3623.00 SMARTS Consortium: 0.9-meter Telescope BLANK U liq. CuSO4 Tek set#3 36237605 U liq. CuSO4 Tek set#3 36237605 Size: 3x3 Thick: 8.83
u Stromgren 3530/280 280.00 3530.00 SMARTS Consortium: 0.9-meter Telescope BLANK u Stromgren 3530/280 u Stromgren 3530/280 Size: 4x4 Thick: 9.15
V Harris set#1 4mts 5443/1060 1060.00 5443.00 SMARTS Consortium: 0.9-meter Telescope BLANK V Harris set#1 4mts 5443/1060 Size: 4x4 Thick: 5.12
Showing 1 - 50 of 57

BLANK

Filter FWHM (Å) CWL (Å) Telescope Instrument Plot Data Comments
5019/50 50.00 5027.00 SMARTS Consortium: 0.9-meter Telescope BLANK 5019/50 5019/50 Size: 4x4 Thick: 7.83
660075-3 69.00 6598.00 SMARTS Consortium: 0.9-meter Telescope BLANK 660075-3 Size: 3x3 Thick: 5.57
660075-4 67.00 6600.00 SMARTS Consortium: 0.9-meter Telescope BLANK 660075-4 Size: 4x4 Thick: 5.57
B Harris set#1 4mts 4185/1030 1030.00 4185.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Harris set#1 4mts 4185/1030 Size: 4x4 Thick: 5.40
B set# 2 Schmidt 4200/1050 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
b Strom.  4x4 4697/196 196.00 4697.00 SMARTS Consortium: 0.9-meter Telescope BLANK b Strom.  4x4 4697/196 b Strom.  4x4 4697/196 Size: 4x4 Thick: 9.85
B Tek set#1 4201/1050 1050.00 4200.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tek set#1 4201/1050 Size: 3x3 Thick: 5.17
B Tek set#2 4202/1050 1050.00 4200.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tek set#2 4202/1050 Size: 3x3
B Tek set#3 4203/1050 1050.00 4200.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tek set#3 4203/1050 Size: 3x3 Thick: 5.26
B Tyson "J" 4357/1665 1665.00 4357.00 SMARTS Consortium: 0.9-meter Telescope BLANK B Tyson "J" 4357/1665 Size: 4x4 Thick: 3.65
C Wash 3996/1042 1042.00 3996.00 SMARTS Consortium: 0.9-meter Telescope BLANK C Wash 3996/1042 Size: 3x3 Thick: 8.11
C Wash 4000/1030 1030.00 4000.00 SMARTS Consortium: 0.9-meter Telescope BLANK C Wash 4000/1030 Size: 4x4 Thick: 8.45
Ca H&K line filter 3960/100 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
DDO 51 Wash. set 5130/155 133.00 5121.00 SMARTS Consortium: 0.9-meter Telescope BLANK DDO 51 Wash. set 5130/155 Size: 4x4 Thick: 7.76
g Gunn-T 5118/900 900.00 5118.00 SMARTS Consortium: 0.9-meter Telescope BLANK g Gunn-T 5118/900 g Gunn-T 5118/900 Size: 3x3 Thick: 5.05
Gunn g 4940/700 670.00 4920.00 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4 Thick: 8.95
Gunn i 8120/1500 1600.00 8065.00 SMARTS Consortium: 0.9-meter Telescope BLANK Gunn i 8120/1500 Size: 4x4 Thick: 9.22
Gunn r 6560/900 900.00 6495.00 SMARTS Consortium: 0.9-meter Telescope BLANK Gunn r 6560/900 Size: 4x4 Thick: 9.19
Halpha 656375-3 64.00 6559.00 SMARTS Consortium: 0.9-meter Telescope BLANK Halpha 656375-3 Size: 3x3 Thick: 5.61
Halpha 656375-4 68.00 6567.00 SMARTS Consortium: 0.9-meter Telescope BLANK Halpha 656375-4 Size: 4x4 Thick: 5.54
HST "I" 8300/2500 2560.00 8310.00 SMARTS Consortium: 0.9-meter Telescope BLANK HST "I" 8300/2500 Size: 4x4 Thick: 5.43
HST "V" 5295/1590 1625.00 5292.00 SMARTS Consortium: 0.9-meter Telescope BLANK HST "V" 5295/1590 Size: 4x4 Thick: 5.24
I Gunn-T 8100/1500 1500.00 8100.00 SMARTS Consortium: 0.9-meter Telescope BLANK I Gunn-T 8100/1500 Size: 3X3 Thick: 5.08
I kc set#1 4mts 8075/1500 1500.00 8075.00 SMARTS Consortium: 0.9-meter Telescope BLANK I kc set#1 4mts 8075/1500 Size: 4x4 Thick: 6.19
I kc Tek set#1 8075/1500 1500.00 8075.00 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 3x3 Thick: 6.13
I kc Tek set#2 8118/1415 1415.00 8118.00 SMARTS Consortium: 0.9-meter Telescope BLANK I kc Tek set#2 8118/1415 Size: 3X3
I kc Tek set#3 8067/1485 1485.00 8067.00 SMARTS Consortium: 0.9-meter Telescope BLANK I kc Tek set#3 8067/1485 Size: 3x3 Thick: 6.11
M Wash. 5025/1023 1023.00 5025.00 SMARTS Consortium: 0.9-meter Telescope BLANK M Wash. 5025/1023 Size: 3x3 Thick: 8.08
M Wash. 5040/990 990.00 5040.00 SMARTS Consortium: 0.9-meter Telescope BLANK M Wash. 5040/990 M Wash. 5040/990 Size: 4x4 Thick: 8.25
r Gunn-T 6728/1000 1000.00 6728.00 SMARTS Consortium: 0.9-meter Telescope BLANK r Gunn-T 6728/1000 Size: 3x3 Thick: 5.05
R harris set#1 4mts 6437/1525 1525.00 6437.00 SMARTS Consortium: 0.9-meter Telescope BLANK R harris set#1 4mts 6437/1525 Size: 4x4 Thick: 5.22
R set #2 Schmidt 6437/1525 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
R Tek set #2 6400/1450 1450.00 6400.00 SMARTS Consortium: 0.9-meter Telescope BLANK R Tek set #2 6400/1450 Size: 3x3
R Tek set#1 642571500 1500.00 6425.00 SMARTS Consortium: 0.9-meter Telescope BLANK R Tek set#1 642571500 Size: 3x3 Thick: 5.25
R Tek set#3 6410/1470 1470.00 6410.00 SMARTS Consortium: 0.9-meter Telescope BLANK R Tek set#3 6410/1470 Size: 3x3 Thick: 5.23
SDSS g 4759/1430 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SDSS i 7734/50 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SDSS r 6265/1483 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SDSS u 3513/628 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4X4
SDSS z 9100/1400 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 4x4
SII 6738/50 50.00 6744.00 SMARTS Consortium: 0.9-meter Telescope BLANK SII 6738/50 Size: 4x4 Thick: 7.97
Supernova 6120/140 135.00 6115.00 SMARTS Consortium: 0.9-meter Telescope BLANK Supernova 6120/140 Size: 3x3 Thick: 7.97
T1 Wash. 6130/590 590.00 6130.00 SMARTS Consortium: 0.9-meter Telescope BLANK T1 Wash. 6130/590 Size: 4x4 Thick: 8.35 .9% leak at 1.2u.
T1 Wash. 6152/625 625.00 6152.00 SMARTS Consortium: 0.9-meter Telescope BLANK T1 Wash. 6152/625 Size: 3x3 Thick: 8.21 1% leak at 1.0u.
U liq. CuSO4 set#1 4mts 3580/610 610.00 3580.00 SMARTS Consortium: 0.9-meter Telescope BLANK U liq. CuSO4 set#1 4mts 3580/610 U liq. CuSO4 set#1 4mts 3580/610 Size: 4x4 Thick: 9.32
U liq. CuSO4 Tek set #1 3575/600 600.00 3575.00 SMARTS Consortium: 0.9-meter Telescope BLANK U liq. CuSO4 Tek set #1 3575/600 U liq. CuSO4 Tek set #1 3575/600 Size: 3x3 Thick: 9.09
U liq. CuSO4 Tek set #2 3570/660 660.00 3570.00 SMARTS Consortium: 0.9-meter Telescope BLANK Size: 3x3
U liq. CuSO4 Tek set#3 36237605 605.00 3623.00 SMARTS Consortium: 0.9-meter Telescope BLANK U liq. CuSO4 Tek set#3 36237605 U liq. CuSO4 Tek set#3 36237605 Size: 3x3 Thick: 8.83
u Stromgren 3530/280 280.00 3530.00 SMARTS Consortium: 0.9-meter Telescope BLANK u Stromgren 3530/280 u Stromgren 3530/280 Size: 4x4 Thick: 9.15
V Harris set#1 4mts 5443/1060 1060.00 5443.00 SMARTS Consortium: 0.9-meter Telescope BLANK V Harris set#1 4mts 5443/1060 Size: 4x4 Thick: 5.12
Showing 1 - 50 of 57

Updated on July 8, 2021, 9:42 am