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  1. Galleries
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  3. Astrophotography
  4. » Orion 105mm

 
Orion 105mm...

Astro foto

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Orion 105mm sent on January 05, 2017 (17:17) by Anto77. 9 comments, 1069 views. [retina]

, Posa B f/4.0, ISO 800,

Si tratta di un test che avevo in mente da tempo, provare da un buon cielo la mia canon senza alcun filtro lps, e direi che sono più che soddisfatto, l'immagine non ha alcuna pretesa, mancherebbero pose brevi per il nucleo di m42. Questo mentre riprendevo con il toa la IC410. Ho curato poco l'allineamento dell'astroinseguitore e l'elaborazione non è certosina (ho usato dark e flat di precedenti sezioni). Ma mi interessava vedere la differenza con e senza filtro con lo stesso 105macro. 61 pose da 4min, 15Dark21Flat(21DarkFlat), camera modificata Baader su Ioptron Skyguider. Somma e calibrazione MaxImDL, elaborazione PixInsight, valore medio sqm 21.2, ambiente -5°.



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avatarsenior
sent on January 05, 2017 (18:58) | This comment has been automatically translated (show/hide original)

I must acknowledge that the trial is part of dell'astrofilo spirit, but does not seem to direct experiences are worth more than any theory. In fact I am convinced that with a sky with SQM greater than 21 is not necessary to use filters anti IL, my Hutech IDAS LPS 2V size of the IL bad but being so dark forces me to vex greatly to make fire with live view even with the artificial star. I came to the conclusion to use it only when you need to ... then with tough software like MaximDL PixInsight and you can almost always to fix in a dignified manner. With a good sky, perhaps it is more useful on an SLR a broadband H-Alpha filter that an anti interference filter ;-)

avatarjunior
sent on January 05, 2017 (19:00) | This comment has been automatically translated (show/hide original)

I fully agree Beppe!

user44198
avatar
sent on January 05, 2017 (21:30) | This comment has been automatically translated (show/hide original)

hello Anto77, but here as well the question beautifully explicated by Beppe, it seems that the biggest shortcoming is the PP ... known of the ruling fearful of stars and nebulae ... more attention computing would solve the gap to at least 80% in ... firstly draw the stars apart from nebulae with protective masks, and correct and balance levels with more caution ... the crop signal is good but it is disguised indeed hidden by a too tight processing !!
A greeting
Riccardo

avatarjunior
sent on January 05, 2017 (22:00) | This comment has been automatically translated (show/hide original)

Constructive criticism is always welcome, being still a test for me as I said, and with all the drawbacks that I have stated in the caption, I am more than satisfied with the result. Of course you can always do better and every time is a different challenge.

user44198
avatar
sent on January 06, 2017 (0:12) | This comment has been automatically translated (show/hide original)

... Precisely because you had those beautiful coincidences with clear skies and low temperature ... you have to take up the challenge to improve ... I always try to encourage us to improve and my "critical" should be interpreted in that way ... ;-)

avatarsenior
sent on January 06, 2017 (7:36) | This comment has been automatically translated (show/hide original)

You've done a remarkable camera work. over 4 hours of integration allows interesting results.

In addition to what I have already told you I also suggest another "trick". On this kind of pictures at very short focal (astronomically speaking) should always reduce the importance of the stars, or the beautiful nebular fields are lost behind the light of the myriad of stars that is going to collect

The telescope this problem is less prevalent because they usually are framed small fields, begins to become evident after tens of hours of exposure, but with telephoto lenses becomes evident almost immediately

avatarjunior
sent on January 06, 2017 (8:20) | This comment has been automatically translated (show/hide original)

Thanks guys, the next more serious work it surely will take note ;-)

avatarsupporter
sent on January 28, 2017 (6:14) | This comment has been automatically translated (show/hide original)

Urca: -o how many stars. Beautiful ... 8-)

avatarjunior
sent on January 28, 2017 (10:51) | This comment has been automatically translated (show/hide original)

Thank you very much! Although it was a test and I overlooked many aspects of recovery and processing, it is coming off an image still pleasant.


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