Contents 1 Working with Bandpasses 1.1 Create a bandpass from an obsmode string 1.2 Read bandpasses from a file 1.3 Plot and compare several bandpasses 1.4 Exercise

Working with Bandpasses

Create a bandpass from an obsmode string

  >>> bp1=S.ObsBandpass('acs,hrc,f555w')

  >>> bp1.showfiles()

 

Read bandpasses from a file

  >>> ota=S.FileBandpass('/grp/hst/cdbs/comp/ota/hst_ota_007_syn.fits')

  >>> ccd=S.FileBandpass('/grp/hst/cdbs/comp/acs/acs_hrc_ccd_013_syn.fits')

Plot and compare several bandpasses

  >>> P.plot(bp1.wave,bp1.throughput)

  >>> P.plot(ota.wave,ota.throughput)

  >>> P.plot(ccd.wave,ccd.throughput)

  >>> P.legend(['acs,hrc,f555w','ota','ccd'])

  >>> P.savefig('tut1_bp.ps')

  >>> bp2=ota*ccd

  >>> P.plot(bp2.wave,bp2.throughput)

Exercise

Create a bandpass from another obsmode, and plot it.

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