Sun noise during Eclipse 04

1296 MHz - OK1DFC - 10m dish F/D 0,4 - VLNA G4DDK - 0,2dB N/F - SDR14 + SpectraVue SW

Graph of Sun noise from 07:15 UTC when Eclipse started to 09:50 UTC when finish. Drop down during this period showing graph. -38dB as a level of maximum Sun noise and -44,5dB as a minimum when Sun disc was covered from approximately 80% by the Moon.

click on the picture for high resolution picture

Sun noise compare cold sky - 18dB by SFU 90

Temp. outside -8,6°C


07:15 UTC	Pictures made by Canon EOS 350D - 350mm lens and chromatic filter - OK1DFC			08:24 UTC

2277 MHz - OK1CA - 10m dish

Graph description: 1101040810

Dish SBS 1-1

10 m dish, F/D 0,25 + square septum feed without ring, RHCP, VLNA N/F 0,5 dB at Gain 30 dB

Dish SBS 2-1

10 m dish, F/D 0,25 + square septum feed with ring, RHCP, VLNA N/F 0,5 dB at Gain 30 dB

Radiation diagram at 2,3 GHz is 1° for -3dB.

Measured values at 2277 MHz and 2 MHz broadband:

Dish

Full Sun

10:00UT

79,5%Eclipse

08:25

Cold Sky

10:15

Sun/Sky

Drop down

SBS 1-1

-96,1dB

-100,7dB

-116,1 dB

20 dB

4,6 dB

SBS 2-1

-92dB

-97dB

-112 dB

20 dB

5 dB

10m dish used by OK1CA

Comments and calculation OK1DAK - member of OK1KIR team

EXCEL file OK1CA

Excel file OK1DFC

http://www.qsl.net/oe5jfl/eclipse.htm - Total Eclipse in 11th of Aug. 1999 by OE5JFL and OE5EYM