diff --git a/data/ccd/QE.txt b/data/ccd/QE.txt
new file mode 100644
index 0000000..c1a8939
--- /dev/null
+++ b/data/ccd/QE.txt
@@ -0,0 +1,814 @@
+#-------------------------------------------------------
+#                     PCO.edge 4.2 QE
+#-------------------------------------------------------
+# Quantum efficiency of PCO.edge 4.2 sCMOS camera
+# (data from pco.edge 4.2 data sheet
+# WL  = Wavelength                 [nm]
+# QE  = Quantum Efficiency         [-]
+#-------------------------------------------------------
+# WL  QE
+#-------------------------------------------------------
+wavelength [nm],QE [electron / photon]
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\ No newline at end of file
diff --git a/data/lens/lens.txt b/data/lens/lens.txt
new file mode 100644
index 0000000..241d7e0
--- /dev/null
+++ b/data/lens/lens.txt
@@ -0,0 +1,803 @@
+#-------------------------------------------------------
+#Reflectance
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diff --git a/data/mirror/mirror.txt b/data/mirror/mirror.txt
new file mode 100644
index 0000000..5901864
--- /dev/null
+++ b/data/mirror/mirror.txt
@@ -0,0 +1,802 @@
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diff --git a/esbo-etc_defaults.xml b/esbo-etc_defaults.xml
index 23ec1e5..fd68876 100644
--- a/esbo-etc_defaults.xml
+++ b/esbo-etc_defaults.xml
@@ -1,63 +1,47 @@
 <root>
     <common>
-        <wl_min val="207.5" val_unit="um" comment="Shortest wavelength used for binning input spectra"/>
-        <wl_max val="207.8" val_unit="um" comment="Shortest wavelength used for binning input spectra"/>
-        <wl_delta val="0.15" val_unit="nm" comment="Wavelength increment used for binning input spectra"/>
-        <res val="1.3127e6" val_unit=""
-                   comment="Resolving power for common spectral binning. A linear binning wavelength integral is estimated as wl_min/R"/>
-        <d_aperture val="5" val_unit="m" comment="Diameter of the telescope aperture"/>
+        <wl_min val="3" val_unit="um" comment="Shortest wavelength used for binning input spectra"/>
+        <wl_max val="5" val_unit="um" comment="Shortest wavelength used for binning input spectra"/>
+        <wl_delta val="1" val_unit="nm" comment="Wavelength increment used for binning input spectra"/>
+        <d_aperture val="0.5" val_unit="m" comment="Diameter of the telescope aperture"/>
         <psf val="Airy" osf="10" osf_unit="" comment="PSF of the optical system. Can be Airy or a file"/>
-<!--        <psf val="data/psf_2um.txt" osf="10" osf_unit="" comment="PSF of the optical system. Can be Airy or a file"/>-->
-<!--        <jitter_sigma val="10" val_unit="arcsec" comment="Sigma of the telescope jitter"/>-->
-        <output path="output" format="fits" comment="Output directory to store output files"/>
-        <exposure_time val="2300" val_unit="s" comment="The exposure time"/>
-<!--        <snr val="10, 10, 10" val_unit="" comment="Desired signal to noise ratio"/>-->
-<!--        <snr val="data/snr.csv" comment="Desired signal to noise ratio"/>-->
-<!--        <snr val="10" val_unit="" comment="Desired signal to noise ratio"/>-->
+        <jitter_sigma val="10" val_unit="arcsec" comment="Sigma of the telescope jitter"/>
+        <output path="/results" format="fits" comment="Output directory to store output files"/>
+        <exposure_time val="0.1, 1.2" val_unit="s" comment="The exposure time"/>
     </common>
 
     <astroscene>
-        <target type="BlackBodyTarget" temp="26" temp_unit="K"/>
-<!--        <target type="FileTarget" file="data/target/science_case_point.csv"/>-->
-<!--        <target type="FileTarget" file="data/target/science_case.csv"/>-->
-        <optical_component type="Atmosphere" transmittance="data/atmosphere/science_case_hcl.csv"/>
-        <optical_component type="CosmicBackground" temp="2.725" temp_unit="K"/>
-        <optical_component type="Atmosphere" transmittance="data/atmosphere/science_case.csv"
-        emission="data/atmosphere/science_case_emission.csv"/>
-<!--        <optical_component type="StrayLight" emission="data/strayLight/emission2.csv"-->
-<!--                           comment="Including arbitrary noise sources"/>-->
+        <target type="BlackBodyTarget" temp="5778" temp_unit="K" mag="10" mag_unit="mag" band="B"/>
+        <optical_component type="Atmosphere" altitude="41000" altitude_unit="ft" wl_min="3" wl_min_unit="um"
+                           wl_max="5" wl_max_unit="um" latitude="39" latitude_unit="degree" water_vapor="0"
+                           water_vapor_unit="um" n_layers="2" zenith_angle="0" zenith_angle_unit="degree" resolution="0"
+                           temp="240" temp_unit="K"/>
     </astroscene>
 
     <common_optics>
-        <optical_component type="Mirror" reflectance="data/mirror/science_case.csv"
-                           emissivity="0.05" temp="-15" temp_unit="Celsius" obstruction="0.004"
-                           obstructor_temp="-20" obstructor_temp_unit="Celsius" obstructor_emissivity="0.05"
-                           comment="M1"/>
-        <optical_component type="Mirror" reflectance="data/mirror/science_case.csv"
-                           emissivity="0.05" temp="-20" temp_unit="Celsius" comment="M2"/>
-        <optical_component type="Mirror" reflectance="data/mirror/science_case.csv"
-                           emissivity="0.05" temp="-20" temp_unit="Celsius" comment="M3"/>
-        <optical_component type="Mirror" reflectance="data/mirror/science_case.csv"
-                           emissivity="0.05" temp="-20" temp_unit="Celsius" comment="M4"/>
-        <optical_component type="Mirror" reflectance="data/mirror/science_case.csv"
-                           emissivity="0.05" temp="-20" temp_unit="Celsius" comment="M5"/>
-        <optical_component type="Mirror" reflectance="data/mirror/science_case.csv"
-                           emissivity="0.05" temp="4" temp_unit="K" comment="M6"/>
-        <optical_component type="Mirror" reflectance="data/mirror/science_case.csv"
-                           emissivity="0.05" temp="4" temp_unit="K" comment="M7"/>
-        <optical_component type="Mirror" reflectance="data/mirror/science_case.csv"
-                           emissivity="0.05" temp="4" temp_unit="K" comment="M8"/>
+        <optical_component type="Mirror" reflectance="data/mirror/mirror.txt" temp="70" temp_unit="K" obstruction="0.0" comment="M1"/>
+        <optical_component type="Mirror" reflectance="data/mirror/mirror.txt" temp="70" temp_unit="K" comment="M2"/>
+        <optical_component type="Mirror" reflectance="data/mirror/mirror.txt" temp="70" temp_unit="K" comment="M3"/>
+       <optical_component type="Filter" band="M" temp="70" temp_unit="K" comment="Filter wheel"/>
     </common_optics>
 
     <instrument>
-        <sensor type="Heterodyne">
-            <aperture_efficiency val="0.55" val_unit=""/>
-            <main_beam_efficiency val="0.67" val_unit=""/>
-            <receiver_temp val="1050" val_unit="K"/>
-            <eta_fss val="0.97" val_unit=""/>
-            <lambda_line val="207.613" val_unit="um"/>
-            <kappa val="1" val_unit=""/>
-<!--            <n_on val="10" val_unit=""/>-->
+        <optical_component type="Mirror" reflectance="data/lens/lens.txt" temp="70" temp_unit="K" comment="M4"/>
+        <sensor type="Imager">
+            <f_number val="13" val_unit="" comment="The working f/#"/>
+            <pixel_geometry val="1024, 1024" val_unit="pix" comment="Pixel geometry"/>
+            <center_offset val="0.0, 0.0" val_unit="pix" comment="Shift of the array center"/>
+            <pixel>
+                <quantum_efficiency val="data/ccd/QE.txt" comment="Quantum efficiency of the detector"/>
+                <pixel_size val="6.5" val_unit="um"/>
+                <dark_current val="0.6" val_unit="electron / (pix * s)" comment="Detector dark current"/>
+                <sigma_read_out val="1.4" val_unit="electron(1/2) / pix" comment="Detector readout noise in e-rms"/>
+                <well_capacity val="30000" val_unit="electron" comment="Well capacity of a pixel"/>
+            </pixel>
+            <photometric_aperture comment="The photometric aperture used to calculate signal and noise.">
+                <shape val="circle" comment="Shape of the photometric aperture. Can be square / circle"/>
+                <contained_energy val="80" comment="Contained energy for calculating the SNR"/>
+            </photometric_aperture>
         </sensor>
     </instrument>
 </root>