РСДБ-сессия LFVN в 2008 году

[Игорь]

От кого:    Игорь М  
Кому: akonov@ri, falk@ri, nech@nirfi, dugin@nirfi, g.tuccari@ira, s.montebugnoli@ira, liux@uao, harlamov@okbmei, volvach@, v.agapov@, shmeld@, g.pupillo@isac. 
Дата: 26 Мар 2008 02:33:05 
Тема: VLBI radar session of 2008 
   
Dear colleagues,

We propose to arrange annual VLBI radar session of 2008 between September 2 and 11.

Please let us know your opinion without delay - deadline for proposal on Italian antennas is April 1. 

In principle, asteroid 2000DP107 will approach to Earth on September 11, but not too close (~8 mln. km).

Main goal of our next session may be space debris, and may be some from the Earth group planet.

Best regards,
Igor
 

[Игорь]

Здравствуй, Игорь!

С датами согласны.

Но наблюдать планеты, видимо, не удастся. Ближе остальных Меркурий (160 
млн.км), но диаметр маловат.
Подходящих астероидов тоже не вижу.


Маша

[Игорь]

Hi Igor,

it is basiclly ok for Urumqi,  let us know timeline one month before observation.

cheers
Liu

[Игорь]

Dear Igor,

on Sep 02 we have a geo experiment so we could start one day later.

Cheers,
Gino

[Игорь]

Hi All,
There isn't nothing else planned on that time so far. However JENAM is
planned in Vienna on that time and I would like to attend. Session
partly will run without me... What about processing of previous results?
Ivar

[Игорь]

Hi Ivar!

S> There isn't nothing else planned on that time so far.However JENAM is
S> planned in Vienna on that time and I would like to attend. Session
S> partly will run without me...

OK, I see

S>  What about processing of previous results?


The processing is not finished still, but we plan to make this prior
to September session. In part of processing we are working on three
experiments now:  VLBR07.2, VLBR07.1 and VLBR06.1.

Unfortunately, last year sessions were not too successful.
In VLBR07.1 the results were obtained from three antennas (Kalyazin,
Urumqi and partially Simeiz), and in VLBR07.2 - from two antennas
(Kalyazin and Medicina).

During processing in N. Novgorod of VLBR07.1 the rows of measurements
(Doppler shift and amplitude of spectrum) were obtained for 17 space
debris objects detected in Kalyazin, 7 objects detected in Urumqi and
2 objects detected in Simeiz. Moreover, row of measurements was
received for Venus.

VLBR07.2  was  unhappy  almost in the common. Urumqi not supported it,
Kalyazin  worked  partially,  Noto  was  observed  with  incorrect BBC
frequencies  (schedule  error),  Ventspils was observed with incorrect
BBC side band (LSB instead of USB), the recording from Simeiz contains
internal  interference  peak  too  close  to  echo and this prevent to
normal  processing  (in  addition, processing of NRTV data from Simeiz
displayed  incorrect spectrums, while the processing of videocassettes
is  too  long  procedure).  With  other  side, first VLBI radar useful
output  was  obtained  from  Medicina.  As  you  know,  we started the
development  of the second LFVN correlator in Moscow, which is able to
work  with  Mk-5  data.  During  last time we downloaded the data from
Medicina  via  Internet  and  transformed  its  into NRTV format. This
allowed  to  receive  first rows of measurements for 95104 object. All
obtained  to  time measurements were sent recently to Ballistic Center
of  Keldysh  Institute  for  secondary  processing.  Main  results  of
sessions  of  2008  - we detected the echoes and obtained measurements
for  the  space  debris fragments at Geostationary ring, including the
fragments with high area to mass ratio.

Now   we   concentrated  on  processing  of  VLBR06.1  experiment.  We
downloaded via Internet the Noto NRTV data, partially copied Mk-5 data
from  Zelenchuk.  And now we tried to transform Mk-5 data of Zelenchuk
to NRTV format in attempt to obtain few additional baselines.

The  obtained  results were presented at IVS meeting in St.-Petersburg
in  March  and  I  will  try  to  prepare the paper in this conference
proceedings  (I  am  waiting  of  some  results of Zelenchuk Mk-5 data
processing).

Cheers,
Igor

[Игорь]

Радиоастрономический институт НАН Украины в Харькове, ответственный за научную загрузку передающей РТ-70 в Евпатории, согласился с предложенными датами эксперимента по РСДБ-локации

[Игорь]

Привет, Игорь!

Извини за задержку с ответом - был в командировке.
Приницпиально мы готовы. Единственное, что 1-2 сентября у нас РСДБ.
Поэтому Симеиз сможет начать с 3 сентября или в лучшем варианте с вечера 2 сентября.
ОК?

саша

[Игорь]

This is an automatically created acknowledgement.

Dear Igor Molotov,
Your proposal proposal_1.tex
has been submitted successfully on date 03/31/2008 21:25:54.
Best regards
The Proposal Staff

PROPOSAL FOR 32-M TELESCOPES AT NOTO AND MEDICINA
For IRA use

TITLE: LFVN annual observations: radar measurements of space debris and solar wind research

Principal Investigator: Igor Molotov, Keldysh Institute of Applied Mathematics, Miusskaya sq., 4, Moscow (Russia)

Other Investigators (name, institution): G.Tuccari (IRA-INAF); S. Montebugnoli (IRA-INAF, Italy); M. Nechaeva (RRI, Russia); V. Agapov (Keldysh Inst. of Appl. Math., Russia); I. Falkovich (IRA, Ukraine); G. Pupillo (ISAC-CNR, Italy); Liu Xiang (Urumqi Astr. Obs.); A.Volvach (Crimean Astr. Obs., Ukraine); G. Kharlamov (Special Res. Bureau, Russia); P. Bolli (IRA-INAF, Italy); I. Shmeld (Inst. of Astr., Latvia);

Expected observer(s) Noto: G. Tuccari, P. Bolli. Medicina: S. Montebugnoli, G. Pupillo

Hours requested for this period: 60 from: Sept. 3 to: Sept. 12, number of intervals: 5

[Игорь]

Ура! Нам выделили запрашиваемое время и в Ното и в Медичине. Эксперименту - быть!!!

Dear Proposer,
Please find below the comment of the IRA TAC on your proposal
Greetings.

--------------------------------------------------------------

LFVN annual observations: radar measurements of space
debris and solar wind research

The IRA telescopes have been participating in this important
international program from the very beginning. Both the Medicina and the Noto antennas are
well equipped for this purpose.
The TAC notes that this and the following proposal (9-08) should have
been submitted as a single ‘coordinated’ proposal for both antennas.
Also the plan of observations, in particular start and stop times, is not adequately described.
The proposers are requested to contact the scheduler to define the detailed observing plan.
Assigned: 60 hr.

[Игорь]

Здравствуй, Игорь!

Высылаю черновик программы сентябрьского эксперимента.
Получилось 5 частей по 12 часов с увеличенными перерывами (по просьбе  наблюдателей Евпатории и Калязина).

Астероид удается захватить только один раз в первый день, потом он уходит  из зоны видимости. Так как он маленький и достаточно далеко, то думаю, что  одного скана хватит.
Луна тоже видна очень короткое время на всех антеннах (вставила по скану в  первый и последний день наблюдений).
Из планет выбрала Меркурий (2 скана в последние дни).
Предполагаю, что интервалы наблюдений можно сократить до 10-11 часов.

Маша

-----------------

Draft of the VLBR08.1 schedule

The experiment consists of 5 parts and includes the radar research of
asteroid 2003WT153, Mercury and objects of space debris, investigation of 
solar wind and flare stars observations.

7 antennas will take part in experiment: Evpatoria, Noto, Medicina, Urumqy,
Kaliazin, Simeiz, Ventspils.
Waveband 6 cm.

The next marking are used in the schedule:

Asteroid 2003WT153, 1 scan
Space debris, beam-park, beam-track (Debris), 64 scans
Solar wind (SW), 4 scans
Active stars (AS), 6 scans
Moon, 2 scans
Mercury, 2 scans

- - - -
Part 1: 3.09 (247), 06:00 - 18:00

06:00-07:00 SW
07:00-09:15 Debris (3 scans)
09:15-11:15 asteroid 2003WT153
11:15-11:45 Moon
11:45-17:00 Debris (7 scans)
17:00-18:00 AS

Part 2: 5-6.09 (249-250), 20:00-08:00

20:00-20:30 AS
20:30-07:00 Debris (14 scans)
07:00-08:00 SW

Part 3: 7.09-8.09 (251-252), 19:00-07:00

19:00-19:45 AS
19:45-06:15 Debris (14 scans)
06:15-07:00 AS

Part 4: 10.09 (254), 08:00-20:00

08:00-08:55 SW
08:55-10:25 Debris (2 scans)
10:25-11:25 Mercury
11:25-18:55 Debris (11 scans)
18:55-20:00 AS

Part 5: 12.09 (256), 06:15-18:15

06:15-06:45 AS YZCMI
06:45-09:45 Debris (4 scans)
09:45-10:15 SW
10:15-11:15 Mercury
11:15-18:00 Debris (9 scans)
18:00-18:15 Moon

- - - - -

[Игорь]

Hi Carlo,

CS> I updated your allocated time in Medicina on the basis of this request.
CS> Please note that on Sep 9-10 there is an eVLBI experiment and
CS> your observations on Sep 10 can start only at about 13:30

CS> check
CS> http://www.med.ira.inaf.it/calpar.htm

Thank you. I see that the time after 20:00 of September 10 is free
still. May be we will try slightly to move part 4 of our session?

regards,
Igor

[Игорь]

Hi Carlo,

To avoid the menioned problem we propose to move part 4 of our session 9-08
(BTW, it seems that number of our proposal is 9-08, not 8-08 as indicated in schedule of Medicina):

Part 4 will be from 14:00 UT, 10.09 (254) to 02:00 UT, 11.09 (255).

Please let us know your opinion.

Regards,
Igor

[Игорь]

good! I'll change it.

About the numbering I suspect you submitted the proposal twice so it has
number 8 and 9...

ciao
Carlo

[Игорь]

Dear colleagues,

I am sending the draft of the VLBR08.1 schedule.
The experiment consists of 5 parts and includes the radar research of
asteroid 2003WT153 (1 scan), Mercury (2 scan) and objects of space debris 
(64 scans), investigation of solar wind (3 scans) and flare stars 
observations (6 scans). Waveband of observations is 6 cm.

It is proposed, that 7 antennas will take part in experiment: Evpatoria, 
Noto, Medicina, Urumqy, Kaliazin, Simeiz, Ventspils.

Please, confirm your participation in the experiment.
Let me know, please, if you have any remarks and questions.

Best regards,
Maria Nechaeva

- - - -
Part 1: 3.09 (247), 06:00 - 18:00

06:00-07:00 Solar wind
07:00-09:15 Debris (3 scans)
09:15-11:15 asteroid 2003WT153
11:15-11:45 Moon
11:45-17:00 Debris (7 scans)
17:00-18:00 Active stars

Part 2: 5-6.09 (249-250), 20:00-08:00

20:00-20:30 Active stars
20:30-07:00 Debris (14 scans)
07:00-08:00 Solar wind

Part 3: 7.09-8.09 (251-252), 19:00-07:00

19:00-19:45 Active stars
19:45-06:15 Debris (14 scans)
06:15-07:00 Active stars

Part 4: 10.09-11.09 (254-255), 14:00-00:20

14:00-14:25 Active stars
14:25-15:20 Mercury
15:20-00:20 Debris (12 scans)

Part 5: 12.09 (256), 06:15-18:15

06:15-06:45 Active stars
06:45-09:45 Debris (4 scans)
09:45-10:15 Solar wind
10:15-11:15 Mercury
11:15-18:00 Debris (9 scans)
18:00-18:15 Moon

- - - - -