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Europa Voyager Control Base Mosaic

The voyager control base mosaic for Europa is complete!!

The images processed are Voyager I and II clear and blue filters.

The final products are available on our ftp site:

ftp -i ftpflag.wr.usgs.gov
username: ftp
password: (your e-mail address)
ftp>cd pub/outgoing
ftp>binary
ftp>get (filename)

**NOTE** to PICS users: Sinusoidal projection is the only projection compatable between ISIS and PICS. All files were processed in ISIS. If you want to reproject in PICS you will have to use the file that is in sinusoidal projection mentioned below.

**NOTE** The north and south poles have been "trimmed" off for the purpose of avoiding any chance of misinterpetation of erroneous data. High resolution coverage at the south pole was retained because of the quality of data.

If there are any problems please e-mail tbecker@flagmail.wr.usgs.gov

Description/filenames of final products available (three formats)

1) Global mosaic - hires/lowres merged

Filenames: (Use your browser's save next link function): europa_simp.cub (isis format)
europa_simp.pic (pics format)
europa_simp.raw (raw file - no labels)
Description:: Projection: Simple Cylindrical
kilometers/pixel scale: 4.0
latitude range: -90.0, 90.0
longitude range: 0.0, 360.0
center latitude: 0.0
center longitude: 180.0
bit type: 8 (byte)
number of lines: 1226
number of samples: 2453

2) Global mosaic - hires/lowres merged

Filenames: (Use your browser's save next link function): europa_sinu.cub (isis format)
europa_sinu.pic (pics format)
europa_sinu.raw (raw file - no labels)
Description:: Projection: Sinusoidal
kilometers/pixel scale: 4.0
latitude range: -90.0, 90.0
longitude range: 0.0, 360.0
center latitude: 0.0
center longitude: 180.0
bit type: 8 (byte)
number of lines: 1226
number of samples: 2453

3) High Resolution Mosaic - Orth projection

Filenames: (Use your browser's save next link function): eur_hi_orth.cub (isis format)
eur_hi_orth.pic (pics format)
eur_hi_orth.raw (raw file - no labels)
Description:: Projection: Orthographic Projection
kilometers/pixel scale: 1.0
latitude range: -90.0, 70.0
longitude range: 135.0, 230.0
center latitude: -22.0
center longitude: 128
bit type: 8 (byte)
number of lines: 3123
number of samples: 3123

4) High Resolution Mosaic - Simp projection

(With this version the low resolution mosaic was scaled to 1.0 km/px and placed underneath the high resolution mosaic)

Filenames: (Use your browser's save next link function): eur_hi_simp.cub (isis format)
eur_hi_simp.pic (pics format)
eur_hi_simp.raw (raw file - no labels)
Description:: Projection: Simple Cylindrical
kilometers/pixel scale: 1.0
latitude range: -90.0, 70.0
longitude range: 135.0, 230.0
center latitude: -10.0
center longitude: 180.0
bit type: 8 (byte)
number of lines: 4361
number of samples: 2550

A sinusoidal projection of the hi-res mosaic can be made available upon request.

5) One G1 observation of Europa - Orthographic with lat/lon grid

(The north pole has been filtered with a low pass filter to replace the null data)
Center latitude/center longitude = subspacecraft lat/lon for g1

Filenames: (Use your browser's save next link function): eur_g1_grid.cub (isis format)
eur_g1_grid.pic (pics format)
eur_g1_grid.raw (raw file - no labels)
Description:: Projection: Orthographic
Kilometers/pixel scale: 4.0
latitude range: -90,90
longitude range: 0,360
center latitude: 23.38
center longitude: 217.47
bit type: 8 (byte)
number of lines: 781
number of samples: 781