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Plato...

Astronomia 1

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avatarsenior
sent on March 22, 2014 (14:56)


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Incredibile!

Incredible!

avatarsenior
sent on March 22, 2014 (21:19)


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Grazie Soriana, un saluto alberto

Thanks Soriana, a greeting alberto

avatarsupporter
sent on March 24, 2014 (8:57)


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Non è il mio genere .ma sono tutte foto incredibili. ...complimenti
Ciao
Francesco Abbate

It's not my thing. They are all amazing pictures. Compliments ...
Hello
Francesco Abbate

avatarsenior
sent on March 24, 2014 (17:11)


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Ciao Francesco, grazie e saluti alberto

Hello Francis, thanks and best regards alberto

avatarsenior
sent on March 30, 2014 (14:56)


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Bellissime.
Mi spieghi cosa intendi dicendo che è "ripreso al telescopio a fuoco diretto"?
Luigi

Beautiful.
Explain to me what you mean by saying that it is "taken with the telescope direct fire"?
Louis

avatarsenior
sent on March 31, 2014 (22:26)


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Ciao Luigi,grazie per il passaggio. In quanto al fuoco diretto, è quando adatti la macchina fotografica direttamente al piano focale del tubo del telescopio senza aggiungere lenti o oculari per ingrandimento. In questa foto la Luna vista così a fuoco diretto è il minimo ingrandimento che posso avere a F/10 (F/10 = Lung. focale Telesc. 2000 mm. diviso Apert. Teles. 200mm. = Rapporto focale F/10). Per riprendere completamente il disco lunare al telesc. devo mettere un riduttore di focale che mi da un Rapp. foc. F/6.3. Per ingrandire metto gli oculari che danno un valore X (per). Es. un oculare da 20mm. da : Lung.foc. telesc. 2000mm diviso Lung. foc. oculare 20mm. = 100X, uno da 10mm. = 200X, uno da 5mm. = 400 X, come vedi più piccola la foc. del'oculare più ingrandimenti hai, ma questi li usi per Crateri Valli Dune o altri oggetti lunari oppure par i Pianeti. Spero che mi sono spiegato abbastanza altrimenti chiedi pure ancora. Saluti alberto

Hello Luigi, thanks for the ride. As for the direct fire, is suitable when the camera directly to the focal plane of the telescope tube without adding lenses or eyepieces for magnification. In this photo the moon seen as a direct fire is the minimum magnification I can get to F/10 (F/10 = Leng. Focal Telesc. 2,000 mm. Divided Apert. Teles. 200mm. = Focal Ratio F/10). To resume the lunar disk to fully telescopic. I have to put a focal reducer that gives me a Ratio foc. F/6.3. To enlarge put the eyepieces that give a value X (to). Eg a 20mm eyepiece. by: Lung.foc. telesc. Length 2000mm divided. foc. 20mm eyepiece. = 100X, one 10mm. = 200X, one 5mm. X = 400, how do you see the smallest foc. del'oculare more magnification you have, but they use them to Craters of the Moon Valley Dunes or other objects or par Planets. I hope I have explained abbastanza otherwise well ask again. Greetings alberto

avatarsenior
sent on March 31, 2014 (23:15)


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Ciao Alberto. Grazie per la dettagliata spiegazione. Vediamo se ho capito.
Io possiedo un vecchio Kaewa d=114 F:900 acquistato 30 anni fa da studente che grazie alle vostre fotografie mi è tornata voglia di usare.
Con il tele avevo anche un adattatore per la macchina fotografica che, inserito nell'oculare portaobiettivo, consente di fotografare direttamente l'immagine dallo specchio secondario. E' questo quello che intendi per fuoco diretto?
Luigi


Hello Alberto. Thanks for the detailed explanation. Let's see if I understand.
I own an old Kaewa d = 114 F: 900 bought 30 years ago as a student that thanks to your pictures I want to use is returned.
With the paintings I had also an adapter for the camera, inserted in the eyepiece lens holder, allows you to shoot the image directly from the secondary mirror. And 'this is what you mean by direct fire?
Louis

user28555
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sent on April 02, 2014 (7:47)


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E' una immagine veramente spettacolare, wow"Eeeek!!!
Congratulazioni.
Ciao, Claudio

It 'a picture truly spectacular, wow "wow!
Congratulations.
Hello, Claudio

avatarsenior
sent on April 02, 2014 (8:25)


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Grazie e un saluto alberto

Thanks and greetings alberto

user20639
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sent on April 03, 2014 (9:16)


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Bella, sembra di esserci. Forse è molto difficile fare queste foto.
ciao

Bella seems to be there. Perhaps it is very difficult to make these photos.
hello

avatarsenior
sent on April 03, 2014 (10:01)


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Ciao Leoconte, grazie per il commento. Saluti alberto




Leoconte Hello, thanks for the comment. Greetings alberto



avatarjunior
sent on April 04, 2014 (15:47)


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Bellissima bravo

Beautiful good

avatarsenior
sent on April 04, 2014 (22:35)


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Grazie Sauros, un saluto alberto

Thanks sauros, a greeting alberto

avatarsenior
sent on April 11, 2014 (0:20)


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Ciao Alberto
qualche commento più su ti avevo chiesto informazioni sul "fuoco diretto" e, alla tua gentile risposta, ti ponevo una seconda domanda in merito all'uso di un vecchio telescopio.
Forse ti era sfuggita. Sorry
Puoi dare un occhiata quando hai tempo per darmi un tuo consiglio? Sorriso
Ti ringrazio
Luigi

Hello Alberto
comment on some more I asked about the "direct fire" and to your kind reply, I asked a second question about the use of an old telescope.
Maybe you had escaped. :-|
You can have a look when you have time to give me your advice? :-)
Thank you
Louis

avatarsenior
sent on April 13, 2014 (10:33)


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Ciao Luigi, scusami per non essermi spiegato bene. Leggendo la tua richiesta, mi sembra che tu abbia capito esattamente la funzione "fuoco diretto" dato che correttamente hai parlato di adattare (tramite adattatore) la macch. fotog. (deve essere una reflex dove poter togliere l'obiettivo) all'obiettivo del telescopio. Il grande vantaggio del fuoco diretto si ha nella purezza e e precisione delle immagini ottenute, grazie alla totale assenza di lenti tra l'obiettivo del telescopio e il sensore del corpo macch. fotogr.; di contro l'immagine risulta piuttosto piccola in quanto "l'ingrandimento" dipende unicamente dalla focale del telescopio. In questo caso l'obiettivo dello strumento si comporta come un teleobiettivo di focale equivalente. Caro Luigi, spero di essere stato abb. esaustivo, in caso contrario fammelo sapere. Un saluto alberto

Hello Louis, I'm sorry for not having explained it well. Reading your request, it seems to me that you understand exactly the "direct fire" since you have spoken to adapt properly (via adapter) the mach. fotog. (Must be a reflex where you can remove the lens) lens of the telescope. The great advantage of direct fire occurs in the purity and and precision of the images obtained, thanks to the absence of lenses between the lens of the telescope and the sensor body mach. fotogr.; counter the image is rather small as the "Magnification" depends solely on the focal length of the telescope. In this case the objective of the instrument behaves like a telephoto focal length equivalent. Dear Louis, I hope I was abb. exhaustive, otherwise let me know. Greetings alberto

avatarsenior
sent on April 13, 2014 (17:32)


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Grazie Alberto per la spiegazione dettagliata.
Adesso mi è tutto molto più chiaro. Eeeek!!!
Non mi resta che provare.
Spero di poter inviare presto qualche immagine da sottoporre al vostro attento giudizio.
A presto
Luigi

Thanks Alberto for the detailed explanation.
I now everything is much more clear. wow!
I just have to try.
I hope to post some pictures soon to be attentive to your judgment.
See you soon
Louis

user62557
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sent on February 24, 2015 (14:33)


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conplimenti bella

conplimenti beautiful

avatarsenior
sent on February 25, 2015 (11:42)


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Grazie Luigi e Mauragazzo per l'interesse e l'apprezzamento alla foto. Ciao alberto

Thanks Luigi and Mauragazzo for the interest and appreciation to the photo. Hello alberto


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