Ceres Dawn FC Global Mosaic 140m

Primary Authors

NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

Originators

USGS Astrogeology Science Center

Publisher

USGS Astrogeology Science Center

Publication Date

2016-02-04

Abstract

Product Information: The Dawn Framing Camera (FC) captured images of Ceres with a resolution of about 140 meters per pixel (m) in 2015 (Preusker et al., 2016). German Aerospace Center (DLR) map-projected these images and produced a global high resolution controlled mosaic of Ceres at 140m. The images were taken with different viewing angles and different illumination conditions. Note: 35 meters per pixel versions (LAMO mosaics, v2) have been released by the Small Bodies (SBN) in PDS3 and GeoTIFF (under EXTRAS): Dawn Framing Camera Ceres Image Mosaics Mission and Instrument Information: The Dawn spacecraft launched on September 25, 2007 onboard a Delta II-Heavy Rocket, the instrument payload consisted of two identical framing cameras (FC1 & FC2), a visible and infrared mapping spectrometer (VIR, and a gamma ray and neutron detector (GRaND). DAWN is a National Aeronautics and Space Administration (NASA) Discovery Program mission managed by the Jet Propulsion Laboratory (JPL ), with the principal investigator and science operations center located at the University of California, Los Angeles. The framing cameras were built by the Max Planck Institute for Solar System Research, with significant contributions by the German Aerospace Center, Institute of Planetary Research and in coordination with the Institute of Computer and Communication Network Engineering (Polansky et al., 2016). Dawn spacecraft orbited Ceres in a series of science orbits designed to gradually increase the resolution and quality of science measurements as the mission at each target (Vesta & Ceres) progressed. The four science orbits are: rotation characteristic (RC) at 14,000 km, survey at 4,900 km, high altitude mapping orbit (HAMO) 1,950 km, and low altitude mapping orbit (LAMO) 850 km. HAMO provided the opportunity to collect data for the global topography model by collecting six complete clear-image maps: two at nadir and four at of nadir attitudes (Polansky et al., 2016). References: Polanskey, C., Joy, S., & Raymond, C. (2016). Dawn Ceres Mission: Science Operations Performance. Paper presented at the SpaceOps Conference, Daejeon, Korea. https://arc.aiaa.org/doi/abs/10.2514/6.2016-2442 Preusker, F., Scholten, F., Matz, K. D., Elgner, S., Jaumann, R., Roatsch, T., Joy, S. P., Polanskey, C. A., Raymond, C. A., & Russell, C. T. (2016). Dawn at Ceres - Shape model and rotational state. Paper presented at the 47th Lunar and Planetary Science Conference, Lunar and Planetary Institute, Houston, TX. http://www.hou.usra.edu/meetings/lpsc2016/pdf/1954.pdf Raymond, C. A., Jaumann, R., Nathues, A., Sierks, H., Roatsch, R., Preusker, F., Scholten, F., et al. (2011). The Dawn Topography Investigation. In Russell, C. & Raymond, C. (Eds.), The Dawn Mission to Minor Planets 4 Vesta and 1 Ceres (pp. 487-510). New York, NY: Springer. https://doi.org/10.1007/978-1-4614-4903-4_16 Roatsch, T., Kersten, E., Matz, K.-D., Preusker, F., Scholten, F., Jaumann, R., Raymond, C. A., & Russell, C. T. (2016). High-resolution Ceres High Altitude Mapping Orbit Atlas derived from Dawn Framing Camera images. Planetary and Space Sciences, 125, 103-107. https://doi.org/10.1016/j.pss.2016.05.011

Purpose

One of the major goals of the mission was a global mapping of Vesta and Ceres.

Contact and Distribution

Format

Global Mosaic, Remote-sensing Data

Access Constraints

None

Access Scope

PDS

Use Constraints

Please cite authors

Edition

Feb. 2016

Edition Name

Ceres Dawn FC Global Mosaic

Supplemental Information

http://dawndata.igpp.ucla.edu, http://www.sciencedirect.com/science/article/pii/S0032063312002589, https://sbn.psi.edu/pds/resource/dawn/dwncfcmosaics.html

Native Data Set Environment

ISIS v3

Astrogeology Theme

Dwarf planets, Image Processing, Remote Sensing

Mission Names

Dawn

Online Package Link

https://astrogeology.usgs.gov/search/map/ceres_dawn_fc_global_mosaic_140m

External File Size

214 MB

Online File Link

https://astrogeology.usgs.gov/search/map/Ceres/Dawn/DLR/FramingCamera/Ceres_Dawn_FC_DLR_global_59ppd_Feb2016

Contact Address

2255 N. Gemini Drive

Contact City

Flagstaff

Contact State

AZ

Contact Postal Code

86001

Contact Email

astroweb@usgs.gov

Currentness Reference

Publication date

Progress

In Work

Update Frequency

As needed

Logical Consistency

The Framing Camera is a multispectral imager that also serves as an optical navigation camera. The detector is a 1024x1024 pixel Atmel/Thomson TH7888A CCD with 14 micron pixels. It has eight filters numbered F1 through F8, including a broadband (clear) filter and narrow band filters ranging from 438 nm to 965 nm. The Framing camera instrument includes two redundant cameras of identical design, referred to as FC1 and FC2. For full information about the FC instrument, see Schroeder and Gutierrez-Marques (2011). Reference: Schroeder, S.E., and P. Gutierrez-Marques, Calibration Pipeline, MPS Report DA-FC-MPAE-RP-272, Issue 2, Rev. a, 20 July 2011.

Completeness Report

not yet documented

Process Description

The first step of the processing chain is to orthorectify the images to the proper scale and map projection type. This process requires detailed high-resolution information of the local topography of Ceres. The global topgraphy was calculated during the stereo processing of the images and was used here. The shape model was used for the calculation of the ray intersection points while the map projection itself was done onto a sphere with a mean radius of 470 km. The next step was the mosaicing of all images to one global mosaic of Ceres, the so called basemap.

Lineage

Process Date

2016-02-01

Source Title

Ceres Dawn FC Global Mosaic 140m

Source Online Linkage

https://sbn.psi.edu/pds/resource/dawn/dwncfcmosaics.html

PDS Status

PDS 3 Archived

Attribute Accuracy Report

Unknown

Geospatial Information

Target

Ceres

System

Small Bodies

Minimum Latitude

-90

Maximum Latitude

90

Minimum Longitude

-180

Maximum Longitude

180

Direct Spatial Reference Method

Raster

Object Type

Grid Cell

Raster Row Count (lines)

10546

Raster Column Count (samples)

21093

Bit Type (8, 16, 32)

8

Quad Name

Radius A

470000

Radius C

470000

Bands

1

Pixel Resolution (meters/pixel)

140

Scale (pixels/degree)

58.5926

Map Projection Name

Simple Cylindrical

Latitude Type

Planetocentric

Longitude Direction

Positive East

Longitude Domain

-180 to 180