NOAA Satellite Receiving Station

Details on images and receiving equipment used

The images are raw APT (Automatic Picture Transmission) data from the NOAA 12, 14 & 15 polar-orbiting satellites, received in Lower Hutt, NEW ZEALAND (41.2S 174.9E).
They are not rectified in any way, and have no grid or latitude/longitude markings.
However, the New Zealand land-mass can often be clearly seen, especially for those images with maximum altitudes greater than about 40.
Passes from lower altitude angles are often noisy! On occasions, Tasmania and the southeastern extremities of Australia may be seen!

Each image contains two pictures. At night-time both these pictures are infra-red (IR), while by day one of the pictures is visible - just as you would see with the naked eye.
The advantage with the IR pictures, which measure temperature, is that they can be seen at any hour, night or day.

For IR pictures, white areas show high cloud tops, grey areas show middle and lower cloud tops, while the darkest areas are cloud-free, showing either land or sea.

Equipment used to receive the images

Amiga CD32 with SX32Pro expansion (50MHz 68030, 18Mb RAM, 1.2Gb HD)
Martelec Communications Systems' MSR50 Receiver, MSH20 137 MHz Crossed Dipole Antenna, MSK30 Low Noise 137 MHz Preamplifier, AmigaSat v4.0 decoder and software.
Images scaled down to 800x340 and compressed to 75% JPEG format using ImageFX v2.6 on the Amiga.

Equipment owned and operated by Trevor McGavin , Lower Hutt, NEW ZEALAND.

Pictures of the satellite receiving station and antenna

Inline Image: satellite receiving station Inline Image: satellite receiving antenna

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