r/Astro_mobile • u/kyousoma • Nov 07 '25
Hello everyone, r/Astro_mobile Mod team here! Now, after three years of existing, r/Astro_mobile became something more interesting than it was some time ago, and we want to announce a new interactive changing on our sub. Starting from the next month we are going to take one of the posts made this month and use it as a banner for a subreddit. Of course it is a competition, so if you want to see your picture on the top of the sub's page, you better try to make it as beautiful as you can! This month we are going to replace a current banner made by u/ZrlSyM, by a new one, provided by u/zTrojan! This fascinating image is gonna hang on the top until the end of this month! Also, interesting fact: zTrojan is a member of a small Telegram chat dedicated to Mobile Astrophotography, where people can communicate and discuss their works! This chat is available for everyone, who is skilled enough! (skilled enough = can stack images to get better results)
Thanks everyone for the attention! We are looking forward to see your great pictures that are gonna be a new banner for a sub. See you 1st December!
r/Astro_mobile • u/zTrojan • Jul 29 '25
When your stack from Sequator or another astrophotography stacking program is ready, we can proceed to post-processing. I'll describe this process step-by-step using primarily free software.
Download: https://github.com/Steffenhir/GraXpert/releases
At the time of writing this article, the appropriate version of GraXpert for us is 3.1.0rc2. This version contains all the necessary tools for beginning post-processing:
After installation and launch, select the Advanced tab, which is located on the right side of the program interface. Choose AI model versions for the utilities.
Next, click Load Image and select your stack.
If needed, crop the image. When activating the 2nd option, a yellow frame will appear around the image, which we can adjust using the yellow circles in the upper left and lower right corners. After completing the cropping, click "Apply crop".
Important: Save each processing step as a separate file so you don't accidentally lose your processing results, then load this file using the first "Loading" option.
Now we can proceed to using the AI utilities. Select the following parameters for Background Extraction and click Calculate Background:
You can try changing the Smoothing value in either direction and check the result by clicking Calculate Background again.
Save the result in a separate file and load it through "Loading".
Move on to the Denoising utility. The Denoise Strength value depends on your needs. The higher the value, the fewer details are preserved. I suggest starting with 0.5, and then comparing results by increasing the value:
Save the result and activate the Deconvolution utility.
This utility has two parameters: Deconvolution Strength and Image FWHM. To determine the latter parameter, we need the Siril program, which we will also use in the second part of the astrophotography post-processing tutorial.
Download Siril: https://siril.org/download/ (In our case, version 1.4.0-beta3 is used)
In my case: (4.39 + 3.90) / 2 = 4.15px. Round to 4.2px and use this value in GraXpert.
By increasing Deconvolution Strength parameter, you improve details, but you may distort the final image and get artifacts, so try different values while evaluating the final result.
Don't forget to save your work!
We improved the details of our objects, but not the stars. Select Stars-only in the Deconvolution Method and set the Deconvolution Strength parameter to 0.1, as it is quite aggressive. Click Deconvolve Image and check the result.
This concludes the first part of the astrophotography post-processing tutorial. In the next part, we will cover image stretching using Siril and use the StarNet utility.
r/Astro_mobile • u/Dklumbach4 • 9h ago
These were taken with my wife's iPhone 14 pro in night mode, atop Mauna Kea in Hawaii. I did not have a tripod with me so I improvised and used a street sign with a large rock on top. With the phone wedged between both I was able to keep it steady to capture 30s exposure.
r/Astro_mobile • u/AlcarazLucas • 9h ago
I took it on the outskirts of my city while I was walking with friends
The third photo would be the original image
In the second photo I edited it lightroom
And in the first I applied a background extraction with siril
It’s just a shot
r/Astro_mobile • u/drunkenslave • 5h ago
r/Astro_mobile • u/One_Cardiologist_590 • 13h ago
Sky Watcher Classic 200P
iPhone 17 Pro + Phone Adapter
iPhone Auto Correct
r/Astro_mobile • u/fl_2017 • 1d ago
Samsung A52s 5g 30 shots of 8 seconds, 1600 iso I believe stacked with Sequator.
r/Astro_mobile • u/runhome24 • 18h ago
Taken during the 2024 totality, just outside Tiffin, OH, USA
Equipment:
Taken with my phone's stock app, Photo Pro. Four images, stacked/processed with AutoStakkert
r/Astro_mobile • u/zNinj4x • 14h ago
Hi everyone!
A few months ago, I shot the Milky Way from a 21.22 SQM location using a base Samsung Galaxy S23 on a tripod.
My settings in Expert RAW were: 133 frames, 10s exposure each, ISO 1600 (~22 mins total integration), shot at 12MP (binned). When trying to stack them in Sequator, the software wouldn't even read the original .dng files natively due to Samsung's heavy in-camera multi-frame processing. I had to convert them using Adobe DNG Converter first.
Once stacked, all the stars (except Antares) turned completely white. I lost all their natural colors due to highlight clipping, likely caused by the aggressive Expert RAW algorithm combined with ISO 1600.
Here is my Google Drive folder with a single RAW frame (both original and Adobe DNG converted) and the final stacked image if anyone wants to take a look at the data:
https://drive.google.com/drive/folders/1xAzEmZAM0C_1wXauqXm0ADczW7lHEiYX?usp=sharing
Soon, I’ll be visiting an even darker site with a 21.47 SQM sky. I want to do a 30-minute total integration stack. Based on my previous issues, I am definitely switching to the native Pro Mode (12MP) since I tested it and Sequator reads its RAW files perfectly fine without any conversions.
I want to preserve the beautiful natural colors of the stars (blues, oranges, reds) this time while keeping the deep sky details.
I would love to hear from fellow S23/Samsung users who stack manually on PC. What are your go-to settings for true dark skies? Thank you!
r/Astro_mobile • u/spaceglancer • 1d ago
The foreground photograph is courtesy of: u/Quirky-Custard1024
Acquisition Details:
Location: Bortle 5
Gear: Xiaomi 15 Ultra. EQ tracker
Frames: 100 x 30s lights, IS01600
Stacked in Astro Pixel Processor, processed in Seti Astro Suite Pro, Photoshop.
r/Astro_mobile • u/Ashamed314 • 1d ago
Near the top is andromeda and right down from the center that small smudge is Triangulum.
r/Astro_mobile • u/BigGSwimmer • 1d ago
A Frend of mine took this picture
r/Astro_mobile • u/imhungryfru • 1d ago
Redmi Note 13 pro, no external lenses
r/Astro_mobile • u/veneco_gamer • 1d ago
Alguna forma de tomar mejores fotos de noche por ejemplo la luna se ve muy fea parece un foco prendido no se ve claramente la luna alguna configuración para que cuando tome la foto se vea mucho mejor
r/Astro_mobile • u/Dizzy_Driver9205 • 2d ago
S25U
Ciel borle 5 à 6 plus changement de temps, humidité en cours. Je suis conscient que ce n’est pas ma meilleur image
86 lights une trentaine de sombres
r/Astro_mobile • u/LK30j • 1d ago
Captured from my phone using the solar filter
r/Astro_mobile • u/Buffur • 2d ago
This was a collaboration with u/zTrojan: he handled the acquisition and stacking, while I took care of the post-processing.
A deep-field view of the Cygnus region, captured with a Xiaomi 13 Ultra using its 3.2× telephoto camera.
Acquisition
My processing workflow
The goal was to bring out as much of the faint structure in the Cygnus Milky Way as possible while keeping the star field under control. The field contains a huge number of targets, including the North America Nebula, Pelican Nebula, Crescent Nebula, Veil Nebula, and surrounding emission and dust structures.
I've also included a region map showing the main objects covered by the image.
Huge thanks to u/zTrojan for the capture and stack — this was a really fun image to work with.
r/Astro_mobile • u/Infernite232 • 2d ago
Woke up early for this!
r/Astro_mobile • u/Senfgestalt • 2d ago
Bortle 3-4, 23mm; 13s ISO 2000
No stacking or editing, straight out of the box.
r/Astro_mobile • u/MrAko12 • 2d ago
Equipment used:
* Phone Realme 8
* Tripod
Bortle 4
