urn:nasa:pds:cassini-mimi-inca-cal:browse-ienaimg_sh:ienaimg_ho_2014341_000 1.0 1.20.0.0 Product_Browse Vandegriff, Jon; Kusterer, Martha B. 2024 INCA MIMI This file contains spin averaged high spatial energetic neutral atom (ENA) image skymaps (accumulated over four sectors), displayed for one species and time-of-flight (TOF) combinations from the INCA sensor of the MIMI instrument on the Cassini spacecraft. 2024-07-02 1.0 This product, IENAIMG0_HO_2014341_000_02.PNG, was originally released as part of the CO-S-MIMI-4-INCA-CALIB-V1.0 PDS3 data set. The metadata have been migrated to PDS4. The data themselves are unchanged. 2014-12-07T18:27:21.000Z 2014-12-07T23:21:21.000Z Science Calibrated Cassini MIMI INCA Extended-Extended Mission ENA Hydrogen and Oxygen Spin Averaged High Spatial Browse Heliosphere Magnetosphere Particles Neutrals Energetic Cassini-Huygens Mission urn:nasa:pds:context:investigation:mission.cassini-huygens browse_to_investigation Cassini Orbiter Host urn:nasa:pds:context:instrument_host:spacecraft.co is_instrument_host Magnetospheric Imaging Instrument for Cassini Orbiter Instrument urn:nasa:pds:context:instrument:mimi.co is_instrument MIMI Ion Neutral Camera for Cassini Orbiter Instrument urn:nasa:pds:context:instrument:mimi-inca.co is_instrument Saturn Planet urn:nasa:pds:context:target:planet.saturn browse_to_target 1796671667.000 1796689307.000 1 210 210 24 170 Neutrals Flux urn:nasa:pds:cassini-mimi-inca-cal:data-iangave_s:iangave_s_2014341::1.0 browse_to_data CO-S-MIMI-4-INCA-CALIB-V1.0:IENAIMG0_HO_2014341_000_00:IENAIMG0_HO_2014341_000_02.PNG data_to_calibrated_source_product 10.17189/1519607 PDS Planetary Plasma Interactions Node This is the first version converted to PDS4. The DOI references the source PDS3 data set. IENAIMG0_HO_2014341_000_02.PNG 2017-09-12T12:30:37 94952 7d476a00b328afa182a717734ef23ea9 IENAIMG0_HO_2014341_000_00 0 PNG Row one contains the high TOF Hydrogen images, row two contains the low TOF Hydrogen images and row three contains the low TOF Oxygen images. The high TOF oxygen in the spatial products usually has too little intensity to produce a good image, so we left it out of the browse products to allow more image space on the page for browse images that are more useful. The energy range for each TOF range is shown to the right of each row. ENA images are collected when a high voltage is present on the INCA collimator. The value displayed is the log of the image intensity which is counts/(centimeters squared*steradian*seconds*keV). The color bars for each row are independent and are determined by the minimum and maximum pixels in that row (i.e., for the entire day). The energy ranges for the high spatial resolution hydrogen images (TOF id is the value in the TOF column in the angle average files) High TOF id 0 55-90 keV Low TOF id 7 24-55 keV The energy range for the high spatial resolution oxygen is Low TOF id 7 90-170 keV Each original image was 64 x 64 pixels and was transformed into the following frame. The skymap frame is a dynamically defined frame, defined as follows. The primary axis X is the INCA boresight axis. The secondary Z axis is the Z axis of the IAU_SATURN frame. The Y-axis completes the right-handed system. The skymap display is defined to display every frame with the Z axis up, X axis into the page and Y axis out to the left. So in the skymap, using this frame, Z or up is the spin axis of Saturn, into the page is the boresight. Occasionally, outside of 25 Rs when Saturn is in INCA FOV, the image was transformed into the Saturn frame dynamically defined as follows. The primary axis is the CASSINI spacecraft-to-Saturn vector and is labeled X. The secondary (Z) axis is the Z axis of the IAU_SATURN frame (the Saturn spin axis). The Y-axis completes the right-handed system. The skymap display is defined to display every frame with the Z axis up, X axis points into the page, the Y axis to the left. So in the skymap projection, into the page is the spacecraft to Saturn vector, Z axis (or up) is the Saturn spin axis. Scaling has been applied to the image to normalize the apparent size of Saturn, if; 1. Saturn is in the field-of-view 2. The distance to Saturn is less than 100 radius to Saturn 3. The spacecraft is not spinning. In periods where the spacecraft is going in and out of Z axis spin mode, the images will appear un-zoomed and zoomed (non spin mode). If they are visible in the image, the orbit of Titan (dotted line), Titan center (dot), and the axis for Saturn equatorial system frame (centered at Saturn) are displayed. The definition of the Saturn equatorial system frame is the primary axis, labeled Z, is parallel to the Saturn spin axis. The Y-axis is then defined as the cross product of this vector with the Saturn-Sun vector. The X-axis completes the right-handed system and is directed towards the Sun. At the top of the page, the Rs=radius to Saturn, Lat=latitude in IAU_SATURN frame, LT=Saturn Local Time, L=L value, local time of Cassini relative to Saturn, Lon skr-wl= Longitude of Cassini in the Saturn Kilometric Radiation (western longitude) frame. These measurements are calculated at the start time of the first image.