Introduction to SeaStar HRPT

Sunday, 12 October 1997, we ( Roberto Ferrari and Enrico Falconelli ) have received our first nice image of Seastar satellite. The receiver was tuned on the frequency 1702.5 MHz. The hardware was absolutely the same that we use for Noaa HRPT, nothing was changed on the Noaa95 HRPT card. Beside, the software Noaa95 was rewritten to receive and decode correctly the 8 channels of the new satellite.
The orbit altitude is 705 km, each spectral band image is 1285+3 pixell width and contain a scan width at Equator of 2800 km. Resolution is the same as HRPT, each pixel ratio is square 1,1 km x 1,1 km on the ground.
Download ORBVIEW (SeaStar) satellites Keplerian Elements   now !
Once you have received an image, our SeaStar97 software allow you to add different channels and re-build an RGB color image as you like.

WARNING !!!

SeaWiFS began encrypting the L-band
transmission (HRPT) at 1998 (041) 23:56:00

### SeaStar 97 software output File Notation ###

SEASnnn_.RAW = 8 bit file multiplexed (the 8 MSbit as received)

After SPLIT function: nnn (image number) will be the same

By pressing CTRL+J a JPG file will be created and named SEASnnn.JPG

By pressing CTRL+P after split function (while the 8 channels are displayed)
a PCX image wiil be created and named SEASnnn.PCX

!!! Remember that NO hardware upgrades will be
necessary if you already have the Noaa95 card !!!

" SeaWiFS " spectral bands

channel

wavelength [nm]

1

402 - 422

2

433 - 453

3

480 - 500

4

500 - 520

5

545 - 565

6

660 - 680

7

745 - 785

8

845 - 885

Seas8ch.GIF
...(230KB)

wavelength of base color

color

wavelength [nm]

R

620 - 680

G

500 - 520

B

440 - 470


 
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© 2001 - Enrico Falconelli