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#snapseed

3 innlegg3 deltakere2 innlegg i dag
rdm

Here is one I am unexpectedly pleased by.

This is IC4592, aka The Blue Horsehead Nebula.

This is a rather faint nebula dominated by an extremely bright star, making itc tricky to image. I've had many attempts in the past. Tonight, I gave it 4 hours, and the postprocessing finally brought it out of the dark

236x60s@80, Astro filter (Light pollution), Dwarf3. Postprocessing in Stellar Studio and Snapseed.

#Astrodon#Astrophotography#Astronomy
Florian Haas

Can someone recommend a photo editing tool that combines (a) the ease of use and (b) the plethora of available filters that I'm used to from #Snapseed on Android, but for a #GNOME desktop? (The #GIMP excels at (b) though not so much at (a), in my book.)

(Boosts for reach appreciated.)

rdm

Last night was the last night of clear weather for a week or so for us, so, despite the full moon, we popped the Dwarves up on the roof.

First up let's look at what I got the #DwarfII to do. I thought I'd revisit my old favourite, #C63 the #HelixNebula . What I got surprised me greatly.

Here is the same scene - about a fortnight apart - one shot on the #Dwarf3 and the other on the DwarfII. In both cases there is about 7 hours of exposure, at gain 80, and both are using a dualband #OIII / #HII filter.

Both were post processed in the #StellarStudio and finished in #Snapseed .

I am utterly amazed at just how good the Dwarf2 stands up. No, it is not as good as the Dwarf3, but it is still a solid image, and one I am very pleased with.

#Astronomy#astrophotography#Astrodon
*
rdm

Over the last three nights - a break in the weather for us here in #Boorloo ( #PerthWA ) - I've been targeting the same target after midnight and through to astronomical twilight. It is another target that is familiar to me - #C63 or #HelixNebula sometimes known as the Eye of Sauron Nebula or the Eye of God Nebula.

This is the largest planetary nebula visible to us, only about 200 parsecs away, and is about 2.8 light years across, making it about 22 arcminutes across for the main body, and is about 6500 years old.

So back to the making of this image. Each night I got about five hours of shooting in with my #Dwarf3 , for about fifteen hours total. I had to ditch a bunch of frames as they had dodgy data (atmospheric distortions, musktrails, and, in one case, a passing jet), which brought me down to thirteen hours and thirty-six minutes (816x60s@80). These I restacked using the "Megastack" function of the #DwarfLab app (about 3 hours - executed entirely within the telescope), and then passed the result to the #StellarStudio part of the app (running in the cloud) to optimize the FITS file and run a star removal.

I then exported a PNG of each version, and started post-processing. This consisted of passing the starless image into #Snapseed and boosting the saturation, darkening shadows and so on. Then I took the optimized version and took the shadows to maximum darkness, and reduced the overall brightness somewhat, leaving me with a reduced star version, with almost no nebula visible. Lastly, in Snapseed again, I used the double exposure tool to stack the two parts together.

And here is the result.

#Astronomy#Astrodon#Astrophotography
*
rdm

Last night one of my targets was an old favourite - C77, the Hamburger Galaxy or Centaurus A.

This galaxy has an incredibly strong radio source at it's core, and this stunning dust cloud in front of it.

Dwarf3, 245x60s@80. Postprocessing in Stellar Studio and Snapseed.

#Astronomy#astrophotography#Astrodon
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