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  1. Galleries
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  4. » Andromeda

 
Andromeda...

Galassie

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avatarsenior
sent on January 07, 2020 (17:39) | This comment has been automatically translated (show/hide original)

Taking advantage of the beautiful weather of these Christmas holidays a classic
Classic that I missed, difficult to resume despite being gigantic
Difficult because in reality the colors are not very sharp, the powders create so many beautiful details, but the nebula areas are not at all brilliant
But especially difficult because the outer areas are extremely weak

avatarsupporter
sent on January 07, 2020 (17:44) | This comment has been translated

Beautiful

avatarsenior
sent on January 07, 2020 (17:51) | This comment has been automatically translated (show/hide original)

Thanks Canopo

avatarjunior
sent on January 07, 2020 (18:20) | This comment has been translated

Really nice, congratulations!

avatarjunior
sent on January 07, 2020 (18:47) | This comment has been automatically translated (show/hide original)

That's really great. I hope so much in life that I can accomplish something like this

avatarjunior
sent on January 07, 2020 (19:20) | This comment has been translated

Beautiful!

avatarsenior
sent on January 07, 2020 (19:21) | This comment has been automatically translated (show/hide original)

Thank you for the compliments
@Francesco do so much tests and armed with so much patience, which is the most needed thing in astrophotography

avatarsenior
sent on January 08, 2020 (7:15) | This comment has been automatically translated (show/hide original)

Stefano Show!!!!
To a messy image to make it just pleasing to the eye, I prefer yours by far. Just because you managed to show structures that are often forgotten and/or omitted!!! I am a lover of HII regions and with this image you made me happy :-D but how wonderful are those isolated regions in the outer regions :-P

avatarsenior
sent on January 08, 2020 (7:44) | This comment has been automatically translated (show/hide original)

You're right, those outer regions are fascinating and typically not seen in the images that are found on the internet.
it is very special to see this double-ring structure, with the outer one really very far from the core.

avatarsenior
sent on January 08, 2020 (17:22) | This comment has been automatically translated (show/hide original)

Beautiful! What a charm! :-)

avatarjunior
sent on January 08, 2020 (21:27) | This comment has been automatically translated (show/hide original)

Great picture Stefano.
The details in Ha are impressive, they are just those details that I would have liked to integrate on my M31, but I do not have the opportunity to resume in this wavelength.
Congratulations!

avatarsenior
sent on January 09, 2020 (5:11) | This comment has been translated

Fabulous

avatarsenior
sent on January 09, 2020 (7:06) | This comment has been automatically translated (show/hide original)

Thank you
Giancarlo thinks that initially when I put rGB and Ha's outer ring out of the galaxy.
It took me a while to realize that I had to increase the pose on the galaxy a lot to detect the weak outer areas.

avatarsenior
sent on January 10, 2020 (6:43) | This comment has been automatically translated (show/hide original)

What laying times did you hold for the Ha???

avatarsenior
sent on January 10, 2020 (6:53) | This comment has been automatically translated (show/hide original)

The subframes are 5 minutes
The total is more than five hours
In Ha is discreetly brilliant, especially considering that the optics is f/2.8, however I went back maybe I would do the subframes by 10 minutes
The problem is becoming that with satellites that pass continuously everywhere with subfames long risks of throwing away everything :-/

avatarsenior
sent on January 10, 2020 (6:56) | This comment has been automatically translated (show/hide original)

I forgot, what you see is not the shooting It pure, but an image that maps the ratio of brightness Ha and channel R
This served me to increase the contrast of the shot Ha, despite the filter has very narrow band (mine is 6nm) the light of the continuum passes, and especially in the center makes lose contrast.
Applying the report (idea that I came studying the technique of Continuum subtraction) the contrast improves considerably and the center shows the vortex that is absolutely not visible in recovery It alone
THE CS can not do it because I do not have the filter to do it, so I corrected it with a bit of "fantasy" :-D

avatarjunior
sent on January 11, 2020 (19:10) | This comment has been automatically translated (show/hide original)

Beautiful Stephen! I hadn't seen it yet (I'm not a great network navigator :- )

avatarjunior
sent on January 11, 2020 (21:06) | This comment has been automatically translated (show/hide original)

Thank you for the details Stefano.
I'm trying to figure out whether or not my instrumentation allows decent shooting in Ha.
So I ask you for advice, considering that I use an OSC camera (The ASI 183MC-Pro) and a very fast shooting tube (RASA 8" f/2) is there any good filter that can give me good results?

avatarsenior
sent on January 12, 2020 (6:43) | This comment has been automatically translated (show/hide original)

I have never tried the RASA but I know that starizona sells a specific filter holder for the optics and ASI rooms (like the one for Hyperstar)
The narrow band can be done with any shooting chamber, obviously with the color ones you lose a lot of light and a bit of resolution. (1 pixel out of 4 only is sensitive in Ha for example)
The more narrow band filter is the better.
The best brands are Astrodon, Astronomik and Baader in my opinion
The only attention I tell you with an f/2 instrument you may have some problem with reflection, vignette but also filter operation. I know for example that Baader produces a specific model for such bright optics
They usually recommend not to go below f/4-f/3

avatarjunior
sent on August 04, 2020 (4:04) | This comment has been automatically translated (show/hide original)

Fantastic and spectacular photo. Although I understand photography, having never approached the astronomy (apart from the classic moon) I would not even know where to start (although your comments give some suggestions).
Before falling asleep in the evening, I think every night about the Andromeda galaxy and the distances of the universe.
Many do not "focus" the real distances.
For example, light in one day and then in just 24 hours travels 26,000 billion kilometers.
Eaee admits to travelling at this prohibitive speed for us, it would take
2.5 million years to get to Andromeda.
And Andromeda is the closest to us!!!!!


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