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  1. Galleries
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  3. Astrophotography
  4. » Lovejoy, Pleiades

 
Lovejoy, Pleiades...

Comete

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Lovejoy, Pleiades sent on January 20, 2015 (13:40) by Elio Magnabosco. 69 comments, 11661 views.  [editors pick]

, Posa B f/4.0, ISO 1600,

La sera del 18/01/2015 ho immortalato lo spettacolare passaggio ravvicinato della Lovejoy alle Pleiadi. Dieci pose da 180s a 1600iso con una Canon 5D MarkII Centralds al fuoco di un Leica Apo Telyt-R 180mm 3.4 @f4



View High Resolution 2.4 MP  

227 persons like it: Agio85, Aiki76, Albertopantellini, Albieri Sergio, Alcarin, Alcenero, Ale.r, Alessandro Antico, Alessandro Mattiello, Alessandro Riva, Alessandro Tizzi, Alessio Lagreca, Alex Amariei, Alexbv77, Alexey, Aleziggio, Alfredo64, Alieneyes, Alpha_A5100, Ame70, Andrea Cacciari, Andrea Ceresara, Andrea R, Andreagmail, Andreama, Andrea_83, Andy 66, AngeloPerronePhoto, Antonio Paesanti, Antoniopesce88, Anza, Astrotrezzi, Attila, Aurora.Bi, Bal, Bares, Bass3d, Batcaius, Beppe Reda, Brad Pipis, Bruno Pisani, Carlez91, Carmelo Milluzzo, Caterina Bruzzone, Claw, Cobarcore, Cola, Copernico, Cosiminodegenerali, Cremonesesimone, Criss, Cristian Arghius, Daniele Quaranta, DanieleIurissevich, Dede66, Donato Lorubio, Duri, Eldhosepaul, Ellerov64, Emanuele Porcellini, Enrico Boscolo, Enrico Galvani, EnricoGiuliani, Erongo, Estroverzia, F.Naef, Fabercom, Fabio Castagna, Fabio F77, Fabio Rusticelli, Fabio Usvardi, FabiusLaspinaus, Falconfab, Fantom91, Farhad906, FasoAD, Fdicencio, Fede Jp, Federica Rausse, Federico Bergamaschi, Federico Cavalli, Federico Massa, Federico.rugo, Felice Di Palma, Filiberto, Flyingalex, Formha, Fotoacrobata, Francesco Mussapi, Francesco28, Francescodeflorio, Franck P, Free Spirit, Freediver214, Freeitaly76, Fulvio Gioria, Gabrielle Martin, Gaetano Perego, Gaijin, Galdor, Giacota, Gian189, Giancarlo Melis, Gianluca Galli, Gigibr75, Giomig, GionaTabarini, Giorgiaschuma, Giorgio Barozzi, Giorgio Peruzzi, Giulietta Cazzaro, Giuseppe Alessandretti, GiuseppeMaida, Grekon, Gtabbi, Gundamrx91, Hobbit, HrMiri, Indaco, Ipeppe, Jack_98, Juza, Kalos, Karateka, Karl 97, Kusanb, Lince, Lorenzo Bel, Luca Alessi, Luca Pedruzzi, Lucas , Luigi Casetta, Lukett, Mac89, Magard, Maia, Manuel68, Manuela Serra, Marcojetflyer, Marcon, MarsCr, Martinclimber, Martino Eterno, Marzio Bambini, Massimo Soldani Benzi, Massimo-tiga, Matte, Mattia77, MattiaC, Mauelle, Mauro Gamberini, Maxange, Medri Silverio, Michele Gastaudo, Michele Marini, Mirko1109, Mooploop, Mreza, M_billy, Nemesi9191, Nicolò Cavallaro, Nikcola, Niko14, Nolimits80, Orione68, Panleo1, Paolo Pecchi, Paolo Viviani, Paolo.Corona, Paoloeffe, PaoloPgC, Parvati, Pawel68, PBrugne, Peppe Cancellieri, Perni, Pm544, Quellolà, Rafdilor, Raffaele Della Santa, Raffaele1978, Ravell, Renzo Chiavacci, Riccardo Arena Trazzi, Riccardogibilterra, Ricky_71, Rivilli Antonio, Rizioc, Robert.sgammeglia, Robert3417, Roberto Brambilla , Roberto Degli Uomini, Robertogiordana, Robyt, Roskox61, Salte, Salvomanfrotto, Scorpi1972, Sergioalagna, Sg67, Silvan77, Skender Buci, Skenna73, Slashleo, Soriana, Stefania Saffioti, Stefano Mazzei, Stefano Palmieri, StefanoConti, Stefanog31, Stefano_C, Styx, Sunny Cloud, Switosky, Tan, Tessi, Testadura65, Tristan, Valerio Colantoni, Velvia, Vesperwind, Vittorio Scatolini, Walter Serafini, Wells, Wildvideo, Ximen Nao, Zuniga Lorenzo Norberto




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avatarjunior
sent on January 26, 2015 (11:21) | This comment has been automatically translated (show/hide original)

M_billy.
The sky where I took this picture is not a sky was a dazzling sky just enough, this place is located on Lessini mountains between Verona and Vicenza.
There he is at 1200m above sea level and can be seen throughout the Po Valley below, including alas light pollution, you see well Verona Vicenza right and left, the midsize dell'SQM for those who know a bit 'of this instrument is on average 20.50 / 60, improves a bit 'in the evenings without humidity and fog in the plains that attenuates the climb to the sky lights.
I confirm that the mount has used a tracking system perfect, this helps a lot.
Even the lens used is one of the best 180mm in circulation, is Apochromatic and is designed by Leica to work to the best of sue to fire infinite possibilities.
The Canon 5D Mark II I did modify specifically for purely astronomical, that I did replace the glass front of the sensor with a suitable one for shooting astronomical, I did remove the mirror "what they see light at the pentaprism," because I provoked a strong vignetting on top of the sensor when using my telescope very open.
Finally I sent in Korea, to install a cooling system that makes working the sensor to about -30 ° from the ambient temperature, to have a higher ratio signal / noise.
Although the shot was planned previously with the use of astronomical software, in the end after so many years of this passion a little 'post production know.

Elio.


avatarsenior
sent on January 26, 2015 (16:41) | This comment has been automatically translated (show/hide original)

Embèh ... Gemini Gemini ... I know well Andras and his creatures;-)
Rather me a question arises, how come you have not considered a CCD sensor with FF in color?
So just pour parler:-)
Gp

avatarjunior
sent on January 26, 2015 (20:07) | This comment has been automatically translated (show/hide original)

GP, use a DSRL is much, much easier than using a CCD, by the way there I both color in bn, although aps format. I like to play easy:-)

Helium

avatarsenior
sent on January 27, 2015 (9:47) | This comment has been automatically translated (show/hide original)

I know well how much effort requires this activity ... you understand.
I sometimes regret the time of the film! wow! :-D
Gp

avatarjunior
sent on January 27, 2015 (15:23) | This comment has been automatically translated (show/hide original)

In fact, with 30 'of pose I would expect a core slightly moved. In the image of //www.juzaphoto.com/galleria.php? L = en & bk = n-1- & t = 1187199] Vesperwind with 28 'of laying @ 200mm on APS-C ( 320mm eq.) blur you notice how, as in fact I expect. Here is the core point in the file to 2.4Mpxl. This is the only thing that does not convince me.
For the rest pretty picture.

avatarsenior
sent on January 27, 2015 (17:11) | This comment has been automatically translated (show/hide original)

Spectacular;-)

avatarjunior
sent on January 28, 2015 (12:15) | This comment has been automatically translated (show/hide original)

Iz3hbt, 45 seconds at f2.8 at ISO 400 are not equal to 180s to 1600 ISO at f4.
The core here is deliberately overexposed to highlight the dust tail of Lovejoy and nebulosity around the Pleiades.
Here you can see the core but only the crown.
Hello Elio.

avatarsupporter
sent on January 28, 2015 (18:18) | This comment has been automatically translated (show/hide original)

Elio extraordinary! Congratulations, Bal

avatarjunior
sent on January 29, 2015 (12:01) | This comment has been automatically translated (show/hide original)

I do not dispute the core .. I speak of the laying of the overall 30 'and the fact that you do not notice the slightest apparent motion of the comet (observing this the perfect sphericity of the "core" that you see in your picture)

avatarjunior
sent on January 29, 2015 (12:53) | This comment has been automatically translated (show/hide original)

Iz3hbt, really do not understand your insistence! I do not know how to operate the other with this kind of subject, I took the picture and I explained how I came to realize it.

To remove any doubts, the Lovejoy the early evening is still visible high in the sky.
Try it yourself resume 10 poses from 180s to 1600 iso "chased with sidereal movement" with a 180mm lens and then make a normal amount.
This test will togie doubt:-D

avatarjunior
sent on January 29, 2015 (14:00) | This comment has been automatically translated (show/hide original)

in fact, already done, and do not come back.

avatarjunior
sent on January 29, 2015 (19:42) | This comment has been automatically translated (show/hide original)

Well then give me a liar?

avatarjunior
sent on January 30, 2015 (10:57) | This comment has been automatically translated (show/hide original)

Do the theoretical calculations ... the Lovejoy had an apparent speed in that period of about 7arcsec / min (rounded down), you've photographed with a 5DmkII who pixel 6,4micron and 180mm focal length, which means that each pixel subtends your 7,3arcsec. At the theoretical level after about 90secondi laying already see the blur, but at the level + practical and -teorico everything occurs after about 10-15 minutes depending on the seeing of the evening. Surely we do not reach the half hour. So neither in theory nor in practical comparing other photos taken in the same way, I can rationalize your result.
I end here, good shots and the prox!

avatarjunior
sent on January 30, 2015 (23:39) | This comment has been automatically translated (show/hide original)

Iz3hbt I quietly lighthouse's a reason that this surreal discussion ends here, for a few simple reasons.

1) Because I do not know who is behind this nickname.
I have always preferred to introduce myself with my name, it's my fault, but when I talk to someone I like to look into his eyes.

2) With all the good will that I can put, I have not yet figured out why I have to write something that I have not done?
And if you do not return the accounts do not really know what to tell you, it's not my problem and instead get a reason You have them back.

3) I took this picture, I explained largely how I achieve it, and I think sincerely that the result is the minimum wage that you can get with strumentazio2F>

Do not return the accounts even here?

Clear skies Elio Magnabosco. :-D

avatarsenior
sent on January 31, 2015 (0:46) | This comment has been automatically translated (show/hide original)

Iz3hbt: there is, inter alia, a specific function of dss to come puntiffformi stars and comet ....

avatarjunior
sent on January 31, 2015 (10:18) | This comment has been automatically translated (show/hide original)

chills in the back

avatarjunior
sent on January 31, 2015 (12:14) | This comment has been automatically translated (show/hide original)

I state that I also initially doubted the data provided, Having competed on the field mode and very different times.
In peace, I wanted to try to simulate the movement of the comet in the temporal space of 30 minutes, taking into account the date of acquisition and the focal / camera used
The result that I got was a shift of 2.7 arcmin, a shift really irrelevant that explains quite clearly the result obtained by Elio:-D

avatarjunior
sent on January 31, 2015 (14:46) | This comment has been automatically translated (show/hide original)

Sunblack, it is true, but according to the author of the picture is exactly as taken, and for me is can not . If you admit the postproduction the world would be a better Pilino, do not understand why deny them.
There is the facility to keep even the comet ... or just the stars ... there is something for all tastes.

These are 28minuti continues to 180mm with guidance on the core




Really close, I threw too much time.
Clear skies.

avatarjunior
sent on January 31, 2015 (15:52) | This comment has been automatically translated (show/hide original)

[IMG]These are 28minuti continues to 180mm with guidance on the core[/IMG]

I do not understand the rush to close ...
if you like, can you tell me the date of your recovery?

avatarjunior
sent on January 31, 2015 (19:34) | This comment has been automatically translated (show/hide original)

Most likely the misconception is just that.

As one can see from the picture is exactly the opposite of what I did, here you see that the photos were guided on the comet's nucleus, but I as I had specified in the very first post, I just lined up the mount to the celestial pole and I begun to resume, without use of any guide.

The post-production then the core was not visible because they are too saturated, the few details of the tail of powders were then mixed with the sum of the ten frames, in fact, the tail is pleasant to see but shows no fine detail.

A my humble advice, in the anonymity of a nickname, before giving a liar to a person that you do not have the pleasure of knowing, count to one hundred and continue with the count, savefool.

Elio:-D




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