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  4. » Orion Nebula

 
Orion Nebula...

Nebulose

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Orion Nebula sent on April 18, 2017 (16:51) by Stefano_C. 42 comments, 2669 views.

è una delle nebulose più colorate del cielo, facile da osservare vista la luminosità delle parti centrali. Le parti laterali invece sono molto deboli e fanno parte di un complesso di polveri ionizzate ben più grande che attraversa tutta la costellazione. Fotografia della nebulosa di Orione Pentax 75 sdhf e CCD g2-8300 Circa 4 ore di posa totali Il confronto si trova qua [URL=]https://www.juzaphoto.com/galleria.php?l=it&bk=m-1-&t=2299673[/URL] Per la zona più centrale ho usato la ripresa precedente fatta col newton e la reflex


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avatarsenior
sent on April 18, 2017 (17:30) | This comment has been automatically translated (show/hide original)


avatarsupporter
sent on April 18, 2017 (17:32) | This comment has been translated

Excellent!

avatarjunior
sent on April 18, 2017 (19:40) | This comment has been translated

Congratulations!

avatarsenior
sent on April 18, 2017 (23:00) | This comment has been automatically translated (show/hide original)

Thanks for the clarification. It is spectacular the whole and allows me to understand much. I can not wait to learn myself to do these things. Too bad you're in Reggio, otherwise I would have bored much more ...

avatarsenior
sent on April 18, 2017 (23:53) | This comment has been automatically translated (show/hide original)

Thanks for the positive feedback

avatarsenior
sent on April 19, 2017 (8:41) | This comment has been automatically translated (show/hide original)

Congratulations for the photos first of all, this particular one is very beautiful.
In defense of reflex I can say that the nebulae are not really suitable for comparison, especially if the reflex is not modified by filters start already disadvantaged ... then I still agree that the CCD will always win (is a dedicated tool) but on objects such as clusters or galaxies there is a difference, in favor of CCD, but it is less marked than that.
However, I understand that to explain this difference is worth a lot ;-)

avatarjunior
sent on April 19, 2017 (9:17) | This comment has been automatically translated (show/hide original)

Impeccable Stefano! Compliments! Who knows when we can not get to spend an evening together to photograph the stars! 8-)

avatarsenior
sent on April 19, 2017 (10:49) | This comment has been automatically translated (show/hide original)

Thank you
It maybe happens by

Keep in mind that most of the objects being photographed with human focal (I mean under one meter) are emission nebulae

If ritente useful to open a topic to discuss the subject we do it
Tell me in that section

avatarsenior
sent on April 19, 2017 (12:02) | This comment has been automatically translated (show/hide original)

most of photographable objects with human focal (I mean under one meter) are emission nebulae


You are right.
I for now I'm going to frame using the 180 and the camera I have. Then eventually the telescope. Finally dedicated camera (CCD or DSLR antiquated with modified sensor), for the reason you say.

Question: What type of frame do you think I should take in the possible future evolution of view? I would like to single expense, as my usual. EQ5? HEQ5? EQ6?

avatarsenior
sent on April 19, 2017 (14:23) | This comment has been automatically translated (show/hide original)

always very good

avatarsenior
sent on April 19, 2017 (17:33) | This comment has been automatically translated (show/hide original)

HEQ5 perfect for long lenses, small telescopes
NEQ6 much more stable if loaded with important optical (type RC8 or heavy refractors)

avatarsenior
sent on April 19, 2017 (18:36) | This comment has been translated

Thanks Ema

avatarsenior
sent on April 19, 2017 (21:39) | This comment has been automatically translated (show/hide original)

Wonderful, congratulations
hello Gianpietro

avatarsenior
sent on April 19, 2017 (21:41) | This comment has been automatically translated (show/hide original)

Thank you, too Gianpietro

avatarsenior
sent on April 20, 2017 (14:03) | This comment has been automatically translated (show/hide original)

Son about 4 hours of exposure in both cases
With the ccd are fractionated on RGB obviously, in this case R G and B about 2 hours about 1 hour
I repeat the telescope is the same.

Stefano is not an opinion. The SLR has a QE unchanged at around 5% of Ha, the KAF8300 with red filter gets more or less than 40%.

With the SLR can get even better results, you simply modify and use more exposure, or larger telescopes times, that's all

All things being equal SLR unmodified can not compete

avatarjunior
sent on April 20, 2017 (14:28) | This comment has been automatically translated (show/hide original)

Look I deleted msg because I realized that there were data but apparently had already read and responded.
No Pelloni :-) and I apologize for having done you.

Let's say you have a telescope (a gem of yesteryear) 'blind' already paved her (so can not be reduced). Puntualizziamo that with the reduction of the aperture ratio differences dwindle up to 'almost' repeat (ALMOST) align with the limit of the Italian skies.

With a tool to f4 all these differences there would be no.

Then if we are talking about not changed SLR is another matter ... and then go back to your conclusions, but it would be fairer

avatarjunior
sent on April 20, 2017 (14:57) | This comment has been automatically translated (show/hide original)

I'm not a type of forum and social and gave it yet another demonstration to myself and to you who are following this topic.

I apologize to Stefano_C because we think - obviously - in the same way but I have misunderstood and 'belly' started before the brain ... maybe I thought, here's yet another ccd vs SLRs not grasping the gist (SLRs not modified, focal ratio to 6.7 etc ... etc ..)

I take the trouble and I apologize again


avatarsenior
sent on April 20, 2017 (14:57) | This comment has been automatically translated (show/hide original)

also you apologized to you .. when I wrote the quote I ran the name

cmq no problem

It is, the example was just reported to unmodified reflex because they had asked me about these

avatarjunior
sent on April 20, 2017 (18:40) | This comment has been automatically translated (show/hide original)

Very beautiful colors

avatarsenior
sent on April 21, 2017 (8:10) | This comment has been translated

Thank you!


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