Optical Filters

Here are the transmission curves of all the filters we have at the Wheaton Observatory (WO). The transmission curves were generated by Judy Long (class of 2014) and Shereen Velupillai (class of 2015), using the high-resolution spectrometer in the Laser Spectroscopy lab (thanks to Prof. John Collins).

The CSV data for these can be obtained by emailing us at maitra_dipankar@wheatoncollege.edu.

Indivdual 1.25″ filters

Astr_Filter001.Sample.csvAstr_Filter002.Sample.csvAstr_Filter003.Sample.csvAstr_Filter004.Sample.csv
Astr_Filter005.Sample.csvAstr_Filter006.Sample.csvAstr_Filter007.Sample.csvAstr_Filter008.Sample.csv
Astr_Filter009.Sample.csvAstr_Filter010.Sample.csvAstr_Filter011.Sample.csvAstr_Filter012.Sample.csv
Astr_Filter013.Sample.csvAstr_Filter014.Sample.csvAstr_Filter015.Sample.csvAstr_Filter016.Sample.csv
Astr_Filter017.Sample.csvAstr_Filter018.Sample.csvAstr_Filter019.Sample.csvAstr_Filter020.Sample.csv
Astr_Filter021.Sample.csvAstr_Filter022.Sample.csvAstr_Filter023.Sample.csvAstr_Filter024.Sample.csv
Astr_Filter025.Sample.csvAstr_Filter028.Sample.csvAstr_Filter029.Sample.csvAstr_Filter030.Sample.csv
Astr_Filter031.Sample.csv

Filters mounted on filter wheels

Astr_Filter026_cyan.Sample.csvAstr_Filter026_magenta.Sample.csvAstr_Filter026_transparent.Sample.csvAstr_Filter026_yellow.Sample.csv
Astr_Filter027_blue.Sample.csvAstr_Filter027_green.Sample.csvAstr_Filter027_red.Sample.csvAstr_Filter027_yellow.Sample.csv

1.25″ OIII filters (not so good)

Astr_Filter_OIII_001.Sample.csvAstr_Filter_OIII_002.Sample.csvAstr_Filter_OIII_003.Sample.csvAstr_Filter_OIII_004.Sample.csv
Astr_Filter_OIII_005.Sample.csvAstr_Filter_OIII_006.Sample.csvAstr_Filter_OIII_007.Sample.csvAstr_Filter_OIII_008.Sample.csv
Astr_Filter_OIII_009.Sample.csvAstr_Filter_OIII_010.Sample.csv