[Moon] [Moon-Net] Partial eclipse tomorrow

Slawek DL6SH dl6sh-eme at online.de
Fri Mar 20 22:37:03 CET 2015


Hi all,

some broad band measures by my weather station in JN48SW:

Date    Time    watts/m°2
20.03.2015     09:00:00    339
20.03.2015     09:05:00    315
20.03.2015     09:10:00    281
20.03.2015     09:15:00    246
20.03.2015     09:20:00    213
20.03.2015     09:25:00    181
20.03.2015     09:30:00    158
20.03.2015     09:35:00    148
20.03.2015     09:40:00    146        moon maximum shadow in my qrl in 
Stuttgart/ Germany at 9:37 local time = 08:37 gmt
20.03.2015     09:45:00    160
20.03.2015     09:50:00    185
20.03.2015     09:55:00    221
20.03.2015     10:00:00    262
20.03.2015     10:05:00    309
20.03.2015     10:10:00    350
20.03.2015     10:15:00    401
20.03.2015     10:20:00    448
20.03.2015     10:25:00    496
20.03.2015     10:30:00    540
20.03.2015     10:35:00    578
20.03.2015     10:40:00    612
20.03.2015     10:45:00    635
20.03.2015     10:50:00    647
20.03.2015     10:55:00    650
20.03.2015     11:00:00    656

Not been able to check it on 23cm due of qrl.

73, Slawek dl6sh
www.dl6sh.com




Am 20.03.2015 um 19:24 schrieb peter blair:
>  Thankyou JJ, much appreciated. I think  the sun is very active at 
> present ( we had excellent Au as you know) and so possibly / probably 
> the corona diameter is larger. First thing is to collate all the 
> results. vy 73 Peter
> *From:* JJ Mx <jjm_f1ehn at wanadoo.fr>
> *To:* 'peter blair' <g3ltf at btinternet.com>; moon at moonbounce.info; 
> moon-net at mailman.pe1itr.com
> *Cc:* moon-net at list-serv.davidv.net
> *Sent:* Friday, 20 March 2015, 18:13
> *Subject:* RE: [Moon-Net] Partial eclipse tomorrow
>
> Hello Peter and all,
> These compilations of measurements will be very interesting.
> My previous eclipse  I did measurement on 3 cm in 1996. The signal 
> dropped in a near ratio as the optical eclipse.
> Today I did the measurement @1.4 GHz (outside H1 line) and I noted the 
> signal dropped less than the optical eclipse (around 4 dB (~40%) for 
> 78% in optic – near PARIS). Moreover the radio eclipse started before 
> the optical eclipse and finished later than the forecast. The sun 
> seemed to be bigger at this frequency (probably coming from its hot 
> chromosphere – I am not an expert and I have to find more info).
> It is the 1^st time I used my 21cm station for a sun eclipse.
> I will send you ASAP the data of the complete eclipse.
> 73. JJ F1EHN
> *De :*moon-net-bounces at mailman.pe1itr.com 
> [mailto:moon-net-bounces at mailman.pe1itr.com] *De la part de* peter blair
> *Envoyé :* vendredi 20 mars 2015 11:19
> *À :* ok1dfc at seznam.cz
> *Cc :* moon at moonbounce.info; moon-net at mailman.pe1itr.com
> *Objet :* Re: [Moon-Net] Partial eclipse tomorrow
> 13cm here measured 5dB drop but this is a first look, need to look 
> more at the recorded data. Im now measureing 9cm on the last 30 mins
> 73 Peter G3LTF
> *From:*"ok1dfc at seznam.cz <mailto:ok1dfc at seznam.cz>" <ok1dfc at seznam.cz 
> <mailto:ok1dfc at seznam.cz>>
> *To:* peter blair <g3ltf at btinternet.com <mailto:g3ltf at btinternet.com>>
> *Cc:* "moon-net at mailman.pe1itr.com 
> <mailto:moon-net at mailman.pe1itr.com>" <moon-net at mailman.pe1itr.com 
> <mailto:moon-net at mailman.pe1itr.com>>; "moon at moonbounce.info 
> <mailto:moon at moonbounce.info>" <moon at moonbounce.info 
> <mailto:moon at moonbounce.info>>
> *Sent:* Friday, 20 March 2015, 10:07
> *Subject:* Re: [Moon-Net] Partial eclipse tomorrow
> During maximum of eclipse today Sun noise drop down 6dB, compare with 
> 04/01/2011 eclipse 
> http://www.ok1dfc.com/eme/mereni/eclipse_04_01_11.htm when we had 80% 
> and than noise drop down -6,5dB
>
> -- 
> Zdenek - OK1DFC
> www.ok1dfc.com <http://www.ok1dfc.com/>
> QRV 144 - 3400 MHz EME - QRO and 10m DISH
> WAC 432 - 1296 - 2320 MHz
> DXCC 432 MHz
> ---------- Původní zpráva ----------
> Od: peter blair <g3ltf at btinternet.com <mailto:g3ltf at btinternet.com>>
> Komu: moon-net at mailman.pe1itr.com 
> <mailto:moon-net at mailman.pe1itr.com><moon-net at mailman.pe1itr.com 
> <mailto:moon-net at mailman.pe1itr.com>>, moon at moonbounce.info 
> <mailto:moon at moonbounce.info><moon at moonbounce.info 
> <mailto:moon at moonbounce.info>>
> Datum: 19. 3. 2015 11:26:54
> Předmět: [Moon-Net] Partial eclipse tomorrow
>
>     If at all possible try and make an accurate measurement of sun
>     noise during the eclipse period on what ever band you can. Ideally
>     we are looking for the ratio between normal level (measured on the
>     same day) and the minimum sun noise occurring at the time of
>     maximum shadowing. You can get the timing for your exact location
>     from this link.
>     http://eclipse.gsfc.nasa.gov/SEgoogle/SEgoogle2001/SE2015Mar20Tgoogle.html
>     We believe that we can possibly accumulate some interesting
>     measurements on a non-quiet sun which might indicate how much
>     noise comes from the corona compared to the disc. This influences
>     what value is used for the solar diameter when making beamwidth
>     measurements for example.
>      GL 73 Peter G3LTF
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>
>
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