CRISTA-NF
The Russian Research Aircraft Geophysica with CRISTA in the front bay.
Visible is the Vacuum Cryostat and the service interfaces.
Window of the CRISTA Cryostat. The window must be transparent in the middle infrared (wavelengths up to 15 micrometer). A ZnSe window, which has an orange color in the visible, is chosen. CRISTA is here mounted in the second bay, in the first bay a microwave limb scanner is mounted. After the descend through the moist troposphere water has condensed on the window.
CRISTA Cryo-servicing. The tank of CRISTA (second bay) is filled with more than 100 l of liquid He.
Team members of CRISTA and MIPAS, the other IR limb sounder on board Geophysica.
Team members of CRISTA and MARSHALS, the microwave limb scanner.
The CRISTA New Frontiers (CRISTA-NF) experiment matches the narrow margins of the M55 Geophysica research airplane with respect to weight and size. It uses the optics of the CRISTA-satellite center telescope and important parts of the electronics. These components will be embedded in a completely new designed cryostat. The lower one of the two twin spectrometers will now be used for enhanced spectral resolution measurements.
Schematic drawing of the CRISTA-NF instrument. The optical components are cooled by super-critical Helium (<10K) contained in the He-Tank. To isolate the cold tank and optics from the warm vacuum shell the whole optics and tank are supported only by a CFC-Conus.
Integrated in the payload bay of the Geophysica CRISTA-NF is suspended from steel wire coils to decouple from the vibrations of the aircraft (here viewed from the nose of the Geophysica). The instrument views sideward and slightly downward from the airplane (c.f. blue dashed lines). The vacuum shell is closed by a ZnSe window which is transparent in the IR. To protect the window during take-off and landing the payload bay can be closed by a shutter.
Because of the weight and size of the instrument special equipment for handling CRISTA-NF during integration and calibration is necessary. In the CRISTA dolly the instrument can be lifted and rotated along its long axis.
last change 04.05.2006 | Peter Preuße | Print
The Russian Research Aircraft Geophysica with CRISTA in the front bay.
Visible is the Vacuum Cryostat and the service interfaces.
Window of the CRISTA Cryostat. The window must be transparent in the middle infrared (wavelengths up to 15 micrometer). A ZnSe window, which has an orange color in the visible, is chosen. CRISTA is here mounted in the second bay, in the first bay a microwave limb scanner is mounted. After the descend through the moist troposphere water has condensed on the window.
CRISTA Cryo-servicing. The tank of CRISTA (second bay) is filled with more than 100 l of liquid He.
Team members of CRISTA and MIPAS, the other IR limb sounder on board Geophysica.
Team members of CRISTA and MARSHALS, the microwave limb scanner.
The CRISTA New Frontiers (CRISTA-NF) experiment matches the narrow margins of the M55 Geophysica research airplane with respect to weight and size. It uses the optics of the CRISTA-satellite center telescope and important parts of the electronics. These components will be embedded in a completely new designed cryostat. The lower one of the two twin spectrometers will now be used for enhanced spectral resolution measurements.
Schematic drawing of the CRISTA-NF instrument. The optical components are cooled by super-critical Helium (<10K) contained in the He-Tank. To isolate the cold tank and optics from the warm vacuum shell the whole optics and tank are supported only by a CFC-Conus.
Integrated in the payload bay of the Geophysica CRISTA-NF is suspended from steel wire coils to decouple from the vibrations of the aircraft (here viewed from the nose of the Geophysica). The instrument views sideward and slightly downward from the airplane (c.f. blue dashed lines). The vacuum shell is closed by a ZnSe window which is transparent in the IR. To protect the window during take-off and landing the payload bay can be closed by a shutter.
Because of the weight and size of the instrument special equipment for handling CRISTA-NF during integration and calibration is necessary. In the CRISTA dolly the instrument can be lifted and rotated along its long axis.
CRISTA im laborlast change 04.05.2006 | Peter Preuße | Print