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View Full Version here: : Gabriella: Behind the Curtain.


Andy01
05-02-2021, 05:59 PM
My unfamiliar take on a familiar scene :D

This is a work in progress as I await clear skies to get O3, S2 & RGB data. But hey, why not use the opportunity to look deep into the rich Ha regions here and lift the curtain of stars to show us what's underneath?

Subtle dust clouds, multiple lavers of nebulosity and obscure isolated pockets of gas are all revealed in plain sight, once those beautiful stars are removed!

Lots to be seen here that is often overlooked using traditional methods.
Starnet++ is incredibly efficient neural net AI software that removes stars more or less perfectly in one application. Fiddly to use on a mac (I understand it's more user friendly via Pixinsight), it's a pretty cool tool to create a unique view of the universe.

Not for the purists by any means, but for those of us interested in alternative processes and different ways of seeing familiar scenes it's revolutionary! :thumbsup:

Approx 3hrs 5nm Ha (chroma filters) from the backyard while the moon was up.

ASTROBIN (https://www.astrobin.com/ulon3y/C/)

NGC 3324 is located in the southern constellation of Carina roughly 7500 light-years from Earth. It is on the northern outskirts of the chaotic environment of the Carina Nebula, which has been sculpted by many other pockets of star formation. A rich deposit of gas and dust in the NGC 3324 region fuelled a burst of starbirth there several millions of years ago and led to the creation of several hefty and very hot stars that are prominent in this picture.

Stellar winds and intense radiation from these young stars have blown open a hollow in the surrounding gas and dust. This is most in evidence as the wall of material seen to the centre right of this image. The ultraviolet radiation from the hot young stars knocks electrons out of hydrogen atoms, which are then recaptured, as the electrons cascade through the energy levels, showing the extent of the local diffuse gas.

As with clouds in the Earth's sky, observers of nebulae can find likenesses within these cosmic clouds. One nickname for the NGC 3324 region is the Gabriela Mistral Nebula, after the Nobel Prize-winning Chilean poet. The edge of the wall of gas and dust at the right bears a strong resemblance to a human face in profile, with the "bump" in the centre corresponding to a nose.

pkinchington
05-02-2021, 06:20 PM
A very moody black and white image. I admire your starless images :)
Cheers Pete

Peter Ward
05-02-2021, 06:59 PM
Really like the starless look eh? :)

I am still not sure how I still feel about the technique...which clearly shows some lovely h-alpha data here....but just 'cause you can, doesn't mean you should. :shrug:

An eye-pleasing result just the same :thumbsup:

Nikolas
05-02-2021, 07:00 PM
Didn't even think about how it was starless which says a lot about how great the image is

petershah
05-02-2021, 07:34 PM
I use Sternet++ with Pixinsight...very simple to use in PI ...it does do quite a good job on most and is better than Stratton Star removal. Occasionally I might need to clean up the odd blip but overall a fantastic tool.
Looking forward to the next instalment on this one, you have some real exquisite detail in that :thumbsup:

gregbradley
05-02-2021, 07:37 PM
That is a surprising image. More detail than I have ever seen before.

I like the starless look myself.

Classic, excellent Andy framing.

Greg.

jahnpahwa
05-02-2021, 07:47 PM
Love it, Andy.



I am also seeing bubbles and pockets that I've not seen in this field before.

Placidus
05-02-2021, 09:20 PM
That's seriously deep Andy. Well done.

Andy01
06-02-2021, 09:05 AM
Thanks Kanga - glad you liked it! :thumbsup:



Agreed peter, Starless images are often considered gimmicky, but in some cases the details revealed are indeed astonishing! :eyepop:
Now if only those pesky clouds would go away... now there's an idea - a cloud removal filter! :lol:



Cheers Nik, I appreciate the good vibes :)



Thanks Peter, I too have previously used Straton, and JP's, Annies and Troys' actions for Star removal - Starnet++ on the other hand, (whilst initially fiddly & difficult to get going on my mac) is truly gobsmakking in the way it effortlessly produces astounding results as advertised, with a minimum of cleanup required. :D



Thanks Greg - delighted with your feedback! :)



Cheers JP - and all hidden in plain sight too! :lol::lol::lol:



Thanks M&T - hopefully I'll get a chance to gather more data soon :)

strongmanmike
06-02-2021, 10:52 AM
Yeah, always a cool look when stars are removed, the B&W palette is nice and arty too, my wife would really like the minimalism :thumbsup:

Mike

Andy01
06-02-2021, 03:55 PM
Thanks Mike, minimalism rocks! :lol:

Just wondering about the science here now. :question:
There’s a ‘barrier wall’ of dust that arcs around Gabriella’s profile with a softer edge near her nose.

Could this be the remnants of star material used up by the hot young stars forming in that O3 rich lagoon in the centre? Ie: Gabriella’s face.

Interesting to ponder now that the underlying details are more easily seen.
Might be a question for M&T?

JA
06-02-2021, 09:16 PM
Wonderful Image Andy :thumbsup:
I really enjoyed flying around the heavens in the high res.

Best
JA

Ryderscope
07-02-2021, 08:05 AM
Nice and sharp Andy. You’ve been kind to Gabriel’s likeness as she explodes from the corner of the frame into the centre of the image. The removal of the stars has been done thoughtfully whilst being considerate of her complexion as well. Very nice indeed :thumbsup:

Andy01
07-02-2021, 09:35 AM
Thanks JA, glad you enjoyed the trip! :lol:



Eloquently put Rodney, thanks for your lovely feedback! :thumbsup: