Monday, March 8, 2010

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Foto del pianeta Giove

The instrumentation used in planetary photography is as follows:

1) CCD camera Meade DSI PRO II monochrome
2) RGB Filters + IR-CUT
3) processing software AtroArt 4.0 and 5.0 Registax


Le specifiche tecniche, di tale strumentazione hardware e software, saranno oggetto di prossime mie riflessioni e commenti.


Al momento intendo presentare le esperienze, in campo, ad iniziare dalle riprese effettuate da Luglio 2009 fino a Settembre 2009.
Tutte le immagini sono state riprese con il Meade lx200 ACF , in ciascuna immagine è presente una didascalia con i relativi dati tecnici.
Coordinate della località di osservazione Lat= 43°18'25" N. Lng= 13°43'11" E. Hslm= 15 m.

Foto realizzata in condizioni estreme di trasparenza.
Data 09/lug/2009   21h 29m 46 sec. T.U.
H= 8° Az=298° ESE
Coordinate topocentriche J2000
Ar= 21h 54m 3.1s
De = -13° 47' 20"
Diametro equat. fase corretta= 46.6"
Mag. visuale= -2.7
Filtri RGB + IR_CUT
Somma di 26 immagini Tempo Totale= 1.46 sec.
CCD Temp.= 26.5  F = 2500 mm. D = 254 mm. F10

The very low height of the plants Jupiter on the horizon, only 8 °, has made the picture very noisy, with poor definition of details. However, the recovery effort can be considered useful to improve the necessary techniques.


Date 19/lug/2009 21h 40m 30 sec. TU
H = 16 ° Az = 308 ° SE
topocentric J2000 coordinates
Ar = 21h 50m 40.3s
De = -14 ° 07 '28 "
Equatorial diameter. correct phase = 47.7 "
May view = -2.8
RGB filters + IR_CUT
Sum of 24 images Total Time = 0385 sec.
CCD Temp = 24.5 F = 2500 mm. D = 254 mm. F10


We observed a clear improvement in noise that is in the details, while still having a height above the horizon less than 20 °. And 'I present the satellite, but not be seen as outside the field of view.


Date 12/ago/2009 21h 50m 03 sec. T.U.
H= 28° Az=335° SSE
Coordinate topocentriche J2000
Ar= 21h 39m 33.2s
De= -15° 08' 27"
Diametro equat. fase corretta= 48.9"
Mag. visuale= -2.9
Filtri RGB + IR_CUT
IR somma di 20 immagini Tempo Totale= 0.16 sec.
R somma di  29 immagini Tempo Totale= 0.319 sec.
B somma di  22 immagini Tempo Totale= 0.704 sec.
G somma di  29 immagini Tempo Totale= 0.638 sec.
CCD Temp.= 25.5 F= 2500 mm. D= 254 mm. F10


Condizioni di trasparenza e turbolenza mediocri. Tuttavia è stato possibile fissare i passaggi di due satelliti sul disco di Giove. Da sinistra a destra rispettivamente: Europa, Ganymede e sul fondo cielo il luminoso IO. 

Data 24/ago/2009 21h 32m 02 sec. T.U. 
H= 30° Az=345° SSE
Coordinate topocentriche J2000
Ar= 21h 33m 28.6s
De= -15° 39' 32"
Diametro equat. fase corretta= 48.8"
May view = -2.8
RGB filters + IR_CUT
IR sum of 41 images Total Time = 0.33 sec.
A sum of 39 images Total Time = 0.43 sec.
B is the sum of 43 images Total Time = 1:38 sec.
G sum of 50 images Total Time = 1.10 sec.
CCD Temp = 27.5 F = 2500 mm. D = 254 mm. F10

average weather conditions, details visible on Jupiter's disk with a certain background noise images. The shootings have been treated with Astroart registax and in different ways. Note, however, the differences noticeable in the two pictures presented.

Date 23/sett/2009 19h 51m 02 sec. TU
H = 30 ° Az = 353 ° S
topocentric J2000 coordinates
Ar = 21h 21m 42.6s
De = -16 ° 35 '10 "
equatorial diameter. = Correct phase 46.2 "
May view = -2.7
RGB filters + IR_CUT

IR sum of 18 images Total Time = 0.20 sec.
A sum of 18 images Total Time = 0.29 sec.
B sum of 18 Images Total Time = 0.58 sec.
G sum of 21 images Total Time = 0.67 sec.
CCD Temp = 25.0 F = 2500 mm. D = 254 mm. F10

Seeing and sufficient turbulence. Attenuation of shades due to atmospheric absorption and scattering. Io is visible on the right side.

Date 30/sett/2009 20h 46m 01 sec. TU
H = 29 ° Az = 16 ° SSW
topocentric J2000 coordinates
Ar = 21h 20m 15.4s
De = -16 ° 41 '19 "
equatorial diameter. correct phase = 45.3 "
May view = -2.7
RGB filters + IR_CUT

IR sum of 18 images Total Time = 0.20 sec.
R sum of 17 images Total Time = 2.12 sec.
B is the sum of 15 images Total Time = 3.75 sec.
G sum of 15 images Total Time = 3.75 sec.
CCD Temp = 25.0 F = 5500 mm. D = 254 mm. F22

The three pictures were taken with a 2x Barlow lens, 4x optical Carl Zeiss Baader Planetarium. The primary focus has been increased by a factor of 2.38x.

The attempt has been made despite not had optimal conditions for high-definition images.

It should be noted, however, the red spot and the satellite I on the right.
The shooting made it possible to verify the quality of the barlow in terms of definition and contrast.
clik-clock system has proved particularly useful and practical to use, with a perfect centering of the system optical axis of the primary focus.
The first of three images has been reduced by 25% and resampled.
These experiences have been very useful to understand and manage, in different experimental conditions is the optics, the system of automatic target recognition, with the configuration in altazimuth coordinates the management of the acquisition of CCD images using filters, and the use of processing software, such Registax and AstroArt.

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