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  1. Galleries
  2. »
  3. Astrophotography
  4. » Orion Nebula

 
Orion Nebula...

Astrofotografia

View gallery (19 photos)

Orion Nebula sent on January 01, 2015 (19:35) by Valentina Rech. 9 comments, 1108 views.

, 2 sec f/5.6, ISO 3200, tripod.

Si tratta dell' unione di più foto sovrapposte con "Deep Sky Stacker"





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avatarjunior
sent on January 02, 2015 (14:22) | This comment has been automatically translated (show/hide original)

Hello, I find remarkable the result obtained with only two seconds of exposure.
Tripod fixed or you used some kind of tracking?

Congratulations again;-)

Alessio

avatarsenior
sent on January 02, 2015 (16:21) | This comment has been automatically translated (show/hide original)

Hello Valentina.
Okay as early also because I was your age I did not know where he was orione!
:-D
I agree with what is written above.

user28347
avatar
sent on January 02, 2015 (16:24) | This comment has been automatically translated (show/hide original)

ok as a start, try 15 seconds with 800 iso;-)

avatarjunior
sent on January 02, 2015 (16:39) | This comment has been automatically translated (show/hide original)

Thank you all,
I realize now that I had forgotten an important detail in the description! (Now I add ..)
It is not a single image, but more photos (twenty) (each with the data I have entered above) overlaid with "deep sky stacker", it is thanks to this that the nebula is seen more than a single picture .. .

sapf, I do not have an equatorial mount, so I can not use those shutter speeds ... I would see only strips ... that's why I used this method

avatarjunior
sent on January 02, 2015 (17:01) | This comment has been automatically translated (show/hide original)

Valentina Hello and thank you for pointing this out.
I take this opportunity to make you one more question (also I would like to do some tests:-))
Using a simple tripod fixed (as I understand) and then nothing "equatorial", I guess you will have also had an effect of rotation between the clicks. Seeing the final rislutato though you would not think.
This is due to the fact that maybe the software used by you can "compensate in some way" rotation or simply depends on the fact that the rotation in 20 poses from 2 seconds is not so obvious?
I hope I explained:-D
Thanks again

Alessio

user28347
avatar
sent on January 02, 2015 (17:31) | This comment has been automatically translated (show/hide original)

alessio apologize if I'm intruding, I think up to 3 seconds is not seen creep, so Valentine did the best;-)

avatarjunior
sent on January 02, 2015 (18:06) | This comment has been automatically translated (show/hide original)

Hello Sapf, figured;-)

I was not referring to the possible "creep" of 3/2 of installation but the effect rotation.
I try to explain.
Chasing a subject with a tripod NOT equatorial, respectively during the 20 poses, the subject will turn up field in two movements:
1) Translation. This is compensated by the software that precisely aligns the 20 shots. At most you will have to be careful to adjust the tripod from time to time in order to keep the subject in the center of the frame.
2) Rotation (the greater the more the subject is far from the North Star)

My question was related to the latter poprio movement and wondered if indeed deep sky stacker was able to "manage" also questo.

Still wonder if I apologize to Valentina abused his room to my questions.

Good photos at all;-)

Alessio

avatarjunior
sent on January 02, 2015 (18:08) | This comment has been automatically translated (show/hide original)

Alessio, now I try to explain to you what I know, tell me if something is not clear ..
leaving the camera on the tripod and simply pointing it towards the nebula, or another person on the sky, imposed a time when the stars remain point .. (300mm I left 2/2), then you take the camera sequence of pictures (the more you do the better).
Reviewing the photos you'll see that the stars have shifted position, but it is not a problem because the program (which is free to download on the internet) aligns the photos automatically "turning" a bit ', overlapping points of the stars ...
So then you get a single image, which will be very clear and you will have postprodurre in Photoshop.
I hope to be able to understand me:-)
Hello There;-)

avatarjunior
sent on January 03, 2015 (10:58) | This comment has been automatically translated (show/hide original)

Hello Valentina,

ok, so the software manages the rotation.
I'll try to do some testing too.

Thanks again

Alessio


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