1. B band filters M.Lampton UCB Space Sciences Lab Nov 2003 More charts added Mar 2006, Oct 2006, Apr 2007

2. Lampton B-band filters2 M.S.Bessell “UBVRI Passbands” PASP 102 1181 1990 Figure 8 B90: Bessell 1990: GaAs + 2GG385+1BG12+1BG18 B18t: Cousins 1973: S13 + 3GG13 BB: Bessell 1976, 1979: S13 + 2GG385 + 1BG12+1BG18 BGR: Graham 1982: GaAs + 3GG13

3. Lampton B-band filters3 Stanishev et al astro-ph/07041244 (2007)

4. Lampton B-band filters4 http://www.sao.ru/hq/moisav/scorpio/filters/filters.html

5. Lampton B-band filters5 http://www.optecinc.com/astronomy/filters/17132.gif

6. Lampton B-band filters6 KPNO glass filters for use with CCDs: B: 1mm BG12 + 2mm BG39 + 1mm GG385 http://www.ing.iac.es/~quality/filter/peletier/subsection3.1.3.html

7. Lampton B-band filters7 KPNO “B” band interference http://www.ing.iac.es/~quality/filter/peletier/subsection3.1.1.html

8. Lampton B-band filters8 The RGO Glass Broad Band Filters (UBVRIZ) http://www.ing.iac.es/~quality/filter/peletier/subsection3.1.2.html

9. Lampton B-band filters9 MDM Observatory's 8K CCD array project: FILTERS FOR THE 8K CCD ARRAY http://www.astro.columbia.edu/~arlin/MDM8K/filters.html

10. Lampton B-band filters10 ESO La Silla standard filter sets: Blue, red http://www.ls.eso.org/lasilla/Telescopes/2p2T/E2p2M/WFI/filters/

11. Lampton B-band filters11 http://www.gemini.edu/sciops/telescope/acqcam/filters/acqB_GS.gif http://www.gemini.edu/sciops/telescope/acqcam/filters/acqB_GS.gif Gemini

12. Lampton B-band filters12 http://www.sbig.com/sbwhtmls/filters.htm http://www.sbig.com/sbwhtmls/filters.htm Santa Barbara Instrument Group

13. Lampton B-band filters13 http://www.sbig.com/products/filters.htm http://www.sbig.com/products/filters.htm Santa Barbara Instrument Group

14. Lampton B-band filters14 http://www.semrock.com/ Single-band filter and sets; over 100 models UV-VIS_NIR

15. Lampton B-band filters15 http://www.andcorp.com/Web_store/UBVRI/Johnson.html http://www.andcorp.com/Web_store/UBVRI/Johnson.html Andover Corporation

16. Lampton B-band filters16 http://www.andcorp.com/Web_store/UBVRI/Johnson.html http://www.andcorp.com/Web_store/UBVRI/Johnson.html Andover Corporation

17. Lampton B-band filters17 HST WFC3 http://www.stsci.edu/instruments/wfc3/INSTR_HANDBK/wfc3_cy136.html F438W (dotted)

18. Lampton B-band filters18 SDSS filters Fukugita et al 1996 AJ 111 1748 blue side cutoff due to glass dye; reasonably rapid cutoff red side cutoff due to multi layer interference film overall good efficiency overall little ripple

19. Lampton B-band filters19 Megacam CFHT http://bison.obs-besancon.fr/modele/cfhtls.html http://www.cfht.hawaii.edu/Instruments/Filters/square300.html http://bison.obs-besancon.fr/modele/cfhtls.html

20. Lampton B-band filters20 Cenko et al “Palomar 60 inch” astro-ph/0608323.pdf

21. Lampton B-band filters21 Asiago Database on filter Photometry Systems (ADPS) http://ulisse.pd.astro.it/Astro/ADPS/ http://aanda.u-strasbg.fr:2002/articles/aa/full/2003/14/aa3021/node1.html Moro, D., & Munari, U., 2000, A&AS, 147, 361 (Paper I) More than 100 photometric systems compared Several hundred UBV ugriz etc systems GIF plots Text listings Hot links to most of the original work ADPS 2003: Fiorucci & Munari A&A 401 pp.781-796, Paper II –Parameters for all filters: various mean wavelengths, widths at 50% and 10%, asymmetries; synthetic photometry

22. Lampton B-band filters22 Conclusions There are a variety of B band filter profiles One has a large asymmetry towards the red Most are nearly symmetrical Best choice for SNAP needs to be explored In our longest NIR passband, a redward extension is a serious contributor to our dark current owing to thermal tails of warm objects within our telescope We should explore symmetrical passbands