Archive for October, 2012

Adding full paths – the THELI case

Posted October 30, 2012 By grigoris

In order to install THELI (GUI version) there is a series of libs and compilers to have already installed prior to THELI (like the fast-fourier transform (fftw), TIFF libraries (libtiff), C and C++ compilers (gcc, g++), Qt3, see the list at the site). Although everything was installed there was still an error in the installation process arising from the possible lack of qmake. The related command in the install.sh script was:

qmake -o Makefile theli.pro

The theli.pro existed, qmake was also present in the computer, so … what was wrong? Finally, Giannis Kapetanakis from the computer support pointed to the use of the full path of qmake. So the previous line should change to:

/usr/lib/qt-3.3/bin/qmake -o Makefile theli.pro

and everything worked properly!

Lesson learned: add the full paths of programs when everything seems to be in place but still they do not work!

Filed in Astronomy | Tagged: ,

Pluto from Skinakas

Posted October 5, 2012 By grigoris

Filed in Astronomy | Tagged: , ,

Planetary imaging from Skinakas telescope

Posted October 5, 2012 By grigoris

In late August 2012 we (me and Manos Kardasis) tested the video capture method for planetary imaging using the 1.29m Skinakas‘ telescope. Although not aware of what problems to expect we finally didn’t encounter any (as Manos had been really working on this with great care and caution) but for the weather and seeing.
So, the test proved successful and all that is needed next time it good seeing.
Below you can see images of the equipment used and the results on Jupiter, Uranus and Neptune.
(Jupiter observations were also forwarded to Planetary Virtual Observatory & Laboratory / Jupiter section.)

Skinakas' 1.29m equipped for planetary imaging

 

Equipment: DMK/DBK video camera + barlow 2x (if needed) + filter wheel (L,R,G,B,Ch4,IR,UV) + eyepiece with flip mirror

 

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Blank Fields

Posted October 4, 2012 By grigoris

Stumbled upon a very interesting page by Santos Pedraz Marcos with a collection of standard stars, I found this table of blank fields:

 
Name     RA1950     DE1950      Reference 
Roeser1  00 16 25.0 +16 09 00   CL 0016+16
Cadis1H  01 45 01.3 +02 05 07   Cadis
Blank1   04 25 46.0 +54 09 03   PASP 97,363
Cadis9H  09 10 28.0 +46 26 23   Cadis
Cadis10H 10 49 00.0 +57 41 52   Cadis, Lockman Hole
Cadis10H 10 49 00.0 +57 51 52   Cadis
Blank2   12 26 49.8 +02 17 56   PASP 97,363
BlankUH  13 07 47.9 +36 15 08   priv.com. 3 brighter *, else empty
HDF      13 34 35.5 +62 29 28   Williams et al 1996 AJ 112,1335
Cadis13H 13 45 11.4 +05 52 32   Cadis
Cadis13H 13 45 51.4 +05 52 32   Cadis
Cadis16H 16 23 28.9 +55 50 47   Cadis
Blank3   16 49 42.0 -15 21 00   PASP 97,363 (? RA:1982,DE:1982)
Cadis18H 17 59 43.0 +66 21 20   Cadis (NEP)
Blank4   19 19 09.0 +12 22 05   PASP 97,363
Blank5   21 26 54.4 -08 51 41   PASP 97,363
Cadis23H 23 13 16.5 +11 10 09   Cadis
Roeser2  23 45 45.0 +00 40 40   priv.com.
Blank6   23 54 08.9 +59 28 18   PASP 97,363
Filed in Astronomy | Tagged:

Transformation factors for X-ray fluxes

Posted October 4, 2012 By grigoris

In the following tables are given the transformation factors of the fluxes from a specific X-ray energy band to the 0.5-7 band, assuming Gamma 1.7 with Nh 6e20 and 0.

Table 1 >>>

Gamma    Nh   MinE MaxE   ModeledFx  Fx_in_0.5-7_band
1.7   6.0E20  2.0  25.0   7.4353E-9  1.524470492137473
1.7   6.0E20  0.1  2.0    2.177E-9   0.44635349756468984
1.7   6.0E20  3.0  10.0   3.234E-9   0.6630717726446831
1.7   6.0E20  2.0  30.0   8.2332E-9  1.6880650974147609
1.7   6.0E20  2.0  10.0   4.0686E-9  0.8341910736421079
1.7   6.0E20  0.3  10.0   6.2155E-9  1.2743731397684144
1.7   6.0E20  0.7  10.0   5.6647E-9  1.1614417444752492
1.7   6.0E20  0.2  10.0   6.245E-9   1.2804215595974016
1.7   6.0E20  0.2  12.0   6.836E-9   1.401595187981426
1.7   6.0E20  0.5  7.0    4.8773E-9  0.9999999789407894
1.7   6.0E20  0.1  10.0   6.2456E-9  1.2805445712067978
1.7   6.0E20  0.2  0.5    2.8144E-10 0.05770405966125076
1.7   6.0E20  0.5  1.0    7.3497E-10 0.1506919758411837
1.7   6.0E20  1.0  2.5    1.6072E-9  0.32952659047456384
1.7   6.0E20  0.5  2.0    1.895E-9   0.3885346266886183
1.7   6.0E20  1.0  2.0    1.16E-9    0.23783650481957802
1.7   6.0E20  2.0  4.5    1.7909E-9  0.36719086048976335
1.7   6.0E20  4.5  12.0   2.8688E-9  0.5881943055328245
1.7   6.0E20  2.5  7.0    2.5352E-9  0.5197957988828394
1.7   6.0E20  0.5  10.0   5.9636E-9  1.222725654804594
1.7   6.0E20  2.5  10.0   3.6215E-9  0.742521474746644

 

Table 2 >>>

Gamma Nh   MinE MaxE  ModeledFx  Fx_in_0.5-7_band
1.7   0.0  2.0  25.0  7.4574E-9  1.4222179900505934
1.7   0.0  0.1  2.0   3.9046E-9  0.7446553253977446
1.7   0.0  3.0  10.0  3.2422E-9  0.618327465238828
1.7   0.0  2.0  30.0  8.2554E-9  1.5744063925281622
1.7   0.0  2.0  10.0  4.0902E-9  0.7800515263759988
1.7   0.0  0.3  10.0  6.9496E-9  1.3253742741638779
1.7   0.0  0.7  10.0  5.8724E-9  1.119938952929684
1.7   0.0  0.2  10.0  7.3779E-9  1.407056368582311
1.7   0.0  0.2  12.0  7.9692E-9  1.519824622996969
1.7   0.0  0.5  7.0   5.2435E-9  0.999999972639108
1.7   0.0  0.1  10.0  7.9948E-9  1.5247068517737434
1.7   0.0  0.2  0.5   1.0472E-9  0.1997139302730967
1.7   0.0  0.5  1.0   1.0005E-9  0.19080766971838653
1.7   0.0  1.0  2.5   1.696E-9   0.32344807992770214
1.7   0.0  0.5  2.0   2.2406E-9  0.42730998909437085
1.7   0.0  1.0  2.0   1.2401     2.3650234120924503E8
1.7   0.0  2.0  4.5   1.8094E-9  0.34507484756230744
1.7   0.0  4.5  12.0  2.872E-9   0.547725750200595
1.7   0.0  2.5  7.0   2.547E-9   0.4857442441663391
1.7   0.0  0.5  10.0  6.3307E-9  1.2073424171358944
1.7   0.0  2.5  10.0  3.6342E-9  0.6930866886631255

 

[Tables calculated through XSPECv12 by Vallia Antoniou]

 

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