B band filters

M.Lampton

UCB Space Sciences Lab

Nov 2003

More charts added Mar 2006, Oct 2006, Apr 2007

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M.S.Bessell “UBVRI Passbands” PASP 102 1181 1990Figure 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

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Stanishev et al astro-ph/07041244 (2007)

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http://www.sao.ru/hq/moisav/scorpio/filters/filters.html

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http://www.optecinc.com/astronomy/filters/17132.gif

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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

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KPNO “B” band interferencehttp://www.ing.iac.es/~quality/filter/peletier/subsection3.1.1.html

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

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MDM Observatory's 8K CCD array project: FILTERS FOR THE 8K CCD ARRAY

http://www.astro.columbia.edu/~arlin/MDM8K/filters.html

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ESO La Silla standard filter sets: Blue, redhttp://www.ls.eso.org/lasilla/Telescopes/2p2T/E2p2M/WFI/filters/

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http://www.gemini.edu/sciops/telescope/acqcam/filters/acqB_GS.gifGemini

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http://www.sbig.com/sbwhtmls/filters.htmSanta Barbara Instrument Group

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http://www.sbig.com/products/filters.htm Santa Barbara Instrument Group

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http://www.semrock.com/

Single-band filter and sets; over 100 models UV-VIS_NIR

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http://www.andcorp.com/Web_store/UBVRI/Johnson.htmlAndover Corporation

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http://www.andcorp.com/Web_store/UBVRI/Johnson.htmlAndover Corporation

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HST WFC3http://www.stsci.edu/instruments/wfc3/INSTR_HANDBK/wfc3_cy136.html

F438W (dotted)

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SDSS filtersFukugita 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

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Megacam CFHThttp://bison.obs-besancon.fr/modele/cfhtls.html

http://www.cfht.hawaii.edu/Instruments/Filters/square300.html

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Cenko et al “Palomar 60 inch” astro-ph/0608323.pdf

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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

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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