LUCIFER's ETC uses transmission data of all filters measured by the manufacturer [BARR]. The additional numbers are the identifiers for the filters.
They are stored in wavelength steps of
0.5 nm as well as the previous wavelength-dependent datasets. The transmission curves of these broadband filters are shown in Figure 4. All available filters (including the narrowband filters) are shown in Appendix A.
Figure 4:
Broadband filters used by LUCIFER
|
![\includegraphics[width=0.77\textwidth]{pictures/gesamt_filter}](img58.png) |
The optical filters U, B, V, R and I can be chosen for the input of the object's magnitude only. They are originally described in steps of
10 nm (U) and
20 nm (B, V, R and I) [FIL-HP]. By linear interpolation the sampling was increased to
0.5 nm.
Andre Germeroth
2011-03-08
