Image Processing Techniques
Creat Post
alienX
Anyone suggesting effective techniques for sharp Sun details with the S50?
I would like to make an attempt to capture sharp Sun details with my S50, e.g. coronal rain, mass ejection, etc. Anyone having success in this mission? Your help is very appreciated!
AstroOdyssey25
I am having issues with PixInsight+Seestar s50 mosiac (mainly stumped on ImageIntegration's error, but registration is being a pain). Any ideas?
Hello everyoneFor context, I began processing my images again and have learned PixInsight. My hardest project M 16 was completed in normal framing mode with 3.7k+ files with no problems. I then processed a couple other targets and just decided to tackle a ~15 hour 2x mosaic of the jellyfish nebula region, 12 hours LP (Ha-OIII dualband filter) and 3 hours IRCUT+ star spike mask for stars to emphasize the stars Tejat and Propus. The thing is, 2x mosiac for the seestar is not a 2 panel mosiac. My best description of it is a random density map (the seestar essentially moves around randomly in an enlarged field of view). Some frames are in the middle and some are barely even in this enlarged field of view, some may have like a third of the frame inside the 2x field of view. I call it a density map because the center mathematically should have more integration than a corner. After each session, I had save each frame on and it automatically outputs a master for that session. I definitely cannot use the IRCUT master as is because a plane went through that isn't super prominent but is still there, and it kept a couple pretty bad frames. The lp filter had a couple good masters and bad ones. Note I am confident that drizzle will be effective given my conditions and the ditheringNow for the problems and errors. Essentially, from the entire start of the preprocessing stage to the final part has some sort of an error with an exception to debayer and measurements at some point of my struggles. My usual preprocessing workflow is something like (in WBPP) debayer-> register -> local normalization -> measurements -> subframe selector -> image integration (pixel rejection) -> drizzle integration. Firstly, shoving in my frames in WBPP as they are will output a result cropped down to one frame. This means I have to use a manual reference frame. My first try in attempt 1 (on 3k frames for the lp filter) was debayer -> generate starfield in catalogstarfieldgenerator -> put it as a manual reference frame in WBPP and continue as a tutorial suggested. It failed with the ransac error unable to find and initial linear transformation or something like that. I got maybe 100/3k frames kept. I ran the same thing in staralignment with similar results. I then proceeded with the standalone process star alignment with the same reference frame with the same issue. I checked to make sure the psuedo reference frame had the right dimensions, rotation, size, and matched it to my stacked output from seestar live session. No matter what it seemed to fail and I gave up on it. I then used the stacked output as a reference frame and after multiple iterations it somehow worked. I used generate drizzle data in staralignment and unfortunately I do not remember the settings. I put the registered images from star alignment into WBPP for weighting and local normalization, and local normalization with some weird error but it turned out that I shouldn't have used it any way with a mosiac like mine so it didn't matter. I put it into subframe selector and the variance of certain statistics was extreme, but I figured out the outliers and rejected them after a while. Note at this point I have repeated all the somewhat successful tasks for both lp and IRCUT filters.Next was the part I can't get around: ImageIntegration. I have 16 GB of RAM and it worked perfectly fine for 3.7k files no mosaic with no issues. However, after inputting even the IRCUT data with only 1.2k files I got an insufficient memory error. I spent a long time trying to get around it. First idea was to close every little program and test various numbers working threads. No success. Then I inflated the backup disk RAM (or a "page file"). This is not risky to computer malfunctions and acts like a back up overflow RAM when it runs out. I played it safe and gave myself 16 gigs of back up, but PixInsight had a seizure when it got to backup RAM and the file explorer task ended and PixInsight crashed, leaving me to a grey screen. I have goofed up computers before, so I had a back up restore point before giving myself extra backup RAM and I was easily able to restart file explorer. I tried batches but nothing worked. I had the bright idea of skipping pixel rejection and putting the drizzle files into DrizzleIntegration, but it failed in 2.03 ms with some error that essentially meant either the drizzle files were all corrupted or missing infromation. At that point, I was back to square one. Attempt 2 has been much more of a pain in some ways. I updated WBPP so I can run subframeselector in WBPP and I have been working soley on the IRCUT data to find the best settings. No matter what I do, I can't even register the frames. My IRCUT is some of the best data I have worked with too, so I don't know whats up. I have run at least 20 different settings (haven't counted, but 3 days worth). Main questions: 1. How do I register my frames with this nonsense? 2. How do I get around the RAM issue, preferably without $?
AstroSingularity
How would I stack HLRGB together?
So I got a data set off of Telescope live it comes with Halpha, Lumaniance, Red, Green & Blue files I know how to stack them and I know how to do LRGB & HSO but I've never done LRGB with Halpha and I can't seem to find any videos or anything online if anyone knows how or has a video it would be greatly appreciated thank you.
КузнецовИван
Use the HDR feature! This allows you to highlight the picture as clearly as possible!
Use the HDR feature! This allows you to highlight the picture as clearly as possible!
YummyPattern
Final HDR postprocessing in LightRoom
Now I finally found a reliable way to master HDR photos: 1. Edit photo in Pixinsight as usual, but on final stage try to keep the image dark and not clip or compress highlights too much, dark image is ok. 2. Export as 16bit TIFF 3. Do final curves edits in LightRoom, enabling HDR mode. Both SDR and HDR versions can be made independently. 4. Export to AVIF. Mac/iPhone will show it correctly. 5. Publishing in LightRoom album also works fine (e.g. this is my DSO HDR album: https://adobe.ly/4cfEDGX)
Jermiahwfmp
Public discord for learning and growing
Hello all I'm making a public discord revolved around astro photography with a goal of learning and growing community in a easy format and way where it's easy and compact to learn from each other and improve. Would anyone be interested in joining?
AstroSingularity
Any tips or good tutorials to help process.?
The first photo is my attempt and the second one is my end goal I got some data sets off of telescope live to practise processing I did a pretty good one for the rosette nebula but I'm struggling on this one (the cat paw nebula) and I can't seem to find a YouTube video that is good what I specifically need so if anyone knows a YouTube video that can help me or any tips that would be great. I use siril or dss for stacking I use graxpert and adobe photoshop and the files are halpha, OIII and SII
Kajcho
Beginner tutorial for stacking S50 images on Mac OS?
Hi everyone. Newbis astro photographer here. Can you recommend beginner-friendly tutorials for stacking pictures on Mac OS? I tried following tutorials for Siril, but they weren't really Seestar S50 relevant and I was missing some steps described in the video.Any tips are appreciated.🌌
Elliot
Anyone have a good editing app?
Does anyone have an editing app (preferably free) that I can use on my iPhone? Don't have a laptop or a tablet to send stuff to and I'd like to have some of the colours and detail pop out more than what I can get through the deep sky stacking on here.
G.Quatraro/Bologna
S50 subframe calibration with darks and flats
There is still one thing that is unclear to me: Does SEESTAR S50 automatically calibrate each subframe with dark and flat frames?If not, what do I need to do to ensure that both calibrations are performed? Thank you for your reply. Gianpaolo.
Cineman
How do you obtain the blue tones?
Hello! This is my first post, and I'm a complete beginner. I'd like to explain my problem using IC405 as an example. I'm having trouble preserving the blue tones and have tried various techniques. Raw data: One series with L-Pro and one with Antlia ALP-T 3nm. In image 1, I applied a luminance mask (Ha of the Antlia ALP-T data) to the L-Pro data and selectively boosted it. In image 2, I split each series with StarXTerminator and merged them according to their weighting. In image 3, I additionally applied a blue channel mask from my nebula image in image 2 to image 1 and boosted the blue tones.I hope that was clear. How do you approach this type of object?
forcy90
GRAXPERT CON IMMAGINI DEL SEESTAR S50 FUNZIONA ????????!!!!!!!!!!
Buongiorno a tutti, ho un quesito da porvi ovvero, seestar rilascia solo LIGHTS ma Graxpert vuole anche darks, flats e Bias, quindi le immagini del seestar non possono essere processare da Graxpert???? Sono nuovo nel settore e grazie per la comprensione 😅😅
Steve Inglis
PC Spec For Post Processing using Pixinsight and or Seti AS
Hi folks. I am just about to start doing some Post Processing of my captured Seestar images. My question is around what spec PC should I use for post processing. I am thinking about using either Pixinsight or Seti AS as my main software to accomplish this task. When I see YouTube videos of pist Processing, there seems little time spent Stacking, layering etc in these videos. So I ask myself what spec are these PC's that chew through Huge numbers of images seemingly very rapidly So my question is what spec machine will be able to handle/process these intensive tasks. Currently I have a Dell Optiplex i7 Intel, 16GB Mem, 500GB SSD and integrated graphics. The monitor is a 43in high spec IPS panel. Any thoughts would be welcome Oh and not a large budget to work with Cheers Steve I
Superstar
hubble-like astro-image
How can I make hubble-like astro-images with seestar S50? From S50 we get only the image filtered by UV/IR-cut. It doesn't have the OIII and SII filters. Therefore it is not possible to make the hubble color from the point view of hardware. But maybe image processing can provide the possibility. I think we can have a good discussion here. Thanks in advance.
