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Showing results for tags 'processing'.
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Startools 1.8 is currently under development, Ivo is currently working a Narrowband Accent" module for duo band users , initial image Ivo has posted certainly looks interesting https://forum.startools.org/viewtopic.php?f=4&t=2225&start=10 Ivo also working on a new deconvolution algorithm so some good things for Startools users to look forward too .
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Gear Used: - Nikon D3300 - Celestron Astromaster 130EQ - T-ring + Barlow x2 I will explain this as briefly as possible. Because I cannot photograph in direct focus with my telescope and camera, I have to use the x2. when there is a full moon, it does not enter the frame, it comes out around the edges, so I think I should make a mosaic. The problem is that I do not have a motorized mount, so anileation is critical. The problem with PIPP is that it does not correct the rotation of the moon, so it does not work for me. I aligned the photos in Photoshop, and exported them in tif -
I'm not experienced with LRGB imaging, so thought i'd give it a go on M81. However, when i combine the 4 individually processed integrations i end up with horrible colour hues across the image - they're all aligned and wotnot. Am i running into the issues of light pollution (inside the M25), which i can only remove with aggressive DBE application? Individual files attached.
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Hey all, I made an acquisition and processing tutorial a while back (3 years ago? Yikes!) and it is fairly dated in terms of what I'm doing these days. I've been asked for a long time to make a new one showing what I'm doing these days. Specifically how I'm processing a single shot image for both the surface and prominences and how to process them together to show prominences and the surface at once. I've abandoned doing split images and composites and strictly work from one image using layers. Acquisition does not use gamma at all anymore. Nothing terribly fancy, but it's not exactly int- 23 replies
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Hey everyone, I was out recently in what felt like the first clear sky in years and got ~109 min of data on M31, minus 76 frames due to a 12mph wind, which left me with 69 min of data (each shot is 45 sec with ISO 200 tracked with skywatcher star adventurer). As mentioned in the title I captured all these images in a bortal 8 location, used an unmodified canon eos 400d and the skywatcher 75ed as the scope (with a flattener). I've attached my edit (warning: it is not great at all + slightly overedited to see what details are even there), and to be my surprise it looked very similar to an i
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Hey everyone. Have previously stumbled across this forum when searching for answers to questions, have finally made an account. Last night I shot the moon for a couple of hours. I took around 10x3 minute videos and captured a little over 80,000 frames. My aim was to then create a lunar mosaic image but I have never done this before, and my technical ability seems to be adding to the confusion. So to give some context, I used an ASI120MCS planetary camera through an 8" Skywatcher Skyliner 200p dobsonian. I have read that ideally you would use a tracking mount to record section
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NOTE: This program has been superseded by ImPPG, which includes all the below functionality in a full-fledged GUI. Image Post-Processor performs Lucy-Richardson deconvolution, histogram stretch, gamma correction and unsharp masking. Both a command-line tool and a graphical user interface (GUI) wrapper for processing of multiple files are available. Discussion threads: http://stargazerslounge.com/topic/230841-impp-%E2%80%93-batch-lucy-richardson-deconvolution-and-more-of-stacks/ http://solarchat.natca.net/viewtopic.php?f=4&t=13927 Building from source code (C++) requires Boost and wxWidget
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Hey all, I took some really rough images of M42 the other night, alignment and focus was by eye, heavily light polluted, no calibration frames and I have a dusty corrector plate. However, this was the first time I have shot a deep sky object and for how rough it was I was pleased, see attached. I watched a lot of DSS tutorial videos last night and I decided to stack the 16 images I have just to see what I get. Now, I am under no delusions as to the expected quality of the final image however, stacking made all the stars vanish and the overall quality of the image was less that that o -
Hi everyone, I've been spending some time processing over cloudy christmas and realised the thing I find most daunting, difficult and annoying is creating star masks. So my question is - is there a way of creating star masks (in Pixinsight preferably, but open to other ways!) which is (a) always accurate (b) relatively quick (c) repeatable? I've worked through LVA tutorials and looked at David Ault's technique. I also have the Bracken book to go through. Main techniques seem to be: 1. Stretch extracted lightness, clip low, bring down highlights, then use Star Mask process - ver -
This is maybe my 3rd attempt at a galaxy and I am trying to figure out the best way of doing it since I live in a red zone of London suburbs. I took this over 2 nights (well, 1.5 really, as my guiding wasn't working and plate solver wouldn't comply after meridian flip...) with my 8" EdgeHD SCT with 0.7x reducer and Atik 490X. Around 20 Luminance subs at 10 mins each (1x1) and around 15 RGB subs at 5 mins each, but binned 2x2. I use Astrodon filters but also have an LP filter permanently in my image train. Question: should I only use RGB and create a synthetic L channel, given LP, o -
Hi, Thinking of trying to get my hands on something a little better than GIMP for my Astro Image Processing (something that supports 16 bit images). (and basically Adobe Photoshop is too expensive for me) I expect this has been discussed many times, but does anyone use Cyberlink PhotoDirector 9 (£47.99), or Serif Affinity Photo for Windows (£48.99) for their post DSS Image Processing? The reviews on the above programs are very good indeed on the internet (ie) Tech Radar I look forward to any recommendations or advice from those that might know please. Regards Steve
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Not quite sure what to put in the title here! I've been thinking about my future possible approaches to deep-sky imaging, especially looking at Emil Kraaikamp's approach in taking thousands of 1 sec images. The datasets this will produce are obviously huge - a single frame from my QHY163M is ~31.2MB in size. Even at 5 sec subs, the volumes of data are 22+GB/hr. Now, that's fine in theory to process (though it'll take a *long* time to chew through them, even on a 8-core i7!) - sufficient diskspace is practical, and I'd scrub the unreduced files once happy anyhow. However - long term storag -
Hi, Hoping for some help here.. Im trying to learn some basic processing in PixInsight, including the PreProcessing (calibration, registrering, stacking, etc.) Im using the only data I have, from my very first lights of M13, calibrated with a SUPER BIAS, no darks and flats yet. When doing it in DSS I get 7 images stacked and the stacked file looks OK. Switching to PixInsight it goes horribly wrong after stacking, and the stacked picture looks like the attached. I have done the whole process in two different ways, but get the same basic result. 1. Doing -
Can someone please give me some guidance on processing a luminance stack in PixInsight. I've looked at a number of web resources and Keller's book but I'm still a bit confused about what I might expect to achieve - what should the end result look like. Apologies for this being M101 again and the quality of the image but it was high in the sky and convenient for a short night with non-optimal seeing. The image comprises 19x300s subs (you know I don't know why I didn't take 20 with my OCD and all that) which I've calibrated with 50 each dark, bias and flats, registered and stacked in P- 20 replies
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This is a 25 minute stack I stacked in dss, but I can get anything out of it. I posted both the 32 bit tif, and the 16 bit tif.... Any pointers would be great. I have trouble with processing. Autosave001.tif long exposure.TIF -
Nice startools tutorial if it`s of use to anyone thinking of playing around with startools http://astro.ecuadors.net/processing-a-noisy-dslr-image-stack-with-startools/
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Just getting to grips with processing after DSS. Can't afford PS so please resist the usual "PS is better than GIMP" comments, I already know; it doesn't make PS any more affordable. Looking for a good, easy to understand tutorial on using gimp to get the best image from the DSS tiff file starting point. Have found a few but seem to skip steps or assume some knowledge...really am looking for an idiot's guide...thanks!
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Finally activated my trial of Pixinsight yesterday - think I have been a bit scared of the software because of it's reputation - but, with a few hours watching Harry's AstroShed Beginner's tutorials I was quite impressed with the difference it made to a few subs from the other night - just 16x420s subs (yep, cloud cut the session short) of M51 and no darks, so I wasn't expecting miracles and, to be honest, after getting up this morning, I can't really remember how I did any of it, but I will work through the same tutorials again and again until it all makes sense. It still needs a bit mor
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Hi all, i just wanted to share a new Gimp 2.9 Beta for Mac. Its a bit work to google it (its not in the first three hits ) so i added a link. So far, i have not hit any bugs. The "big thing" is that you can work now with up to 64 bits loating point values for each colour value of a pixel. You can get it here https://www.dropbox.com/s/3xvttsjv00p0n8i/McGimp-2.9-cc.app.zip?dl=0 I have scanned the file with an up to date virus scanner- no hits. However, everything free comes with no guarantee
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processing 99% Moon Mosaic
Adaaam75 posted a topic in Imaging - Image Processing, Help and Techniques
Hi guys, So on Tuesday night I spent the evening imaging the moon with my Celestron 9.25 SCT and DSLR as shown below and am happy with the images I collated (I only took images as I did intend to take capture video but I got carried away and time was getting on). I have approx 350 jpeg (and the equivalent in raw) images and have used the Microsoft image composite editor to stitch the frames together without editing them first etc but I wonder if I'm going the images an injustice? I'm not ready to pay for editing software as I know there is a lot of very good free downloads out ther -
Hi, I'm working with some recent data of a new(ish) camera, and my Ha data is pretty good, but the oiii has these strange artifacts around the borders. If I use any kind of local normalization then it pretty much ruins most of the image, as you can see below.. First the Ha: Oiii with local normalization: oiii local normalization map, see how it fits with the artifacts: Oiii without any local normalization: These edge artifacts, could they be related to a bad filter or is it a processing artifact, has anyone
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Hi, I would like to share with you an article written by me on high-resolution solar imaging in different wavelengths. Glad that the European Physics Journal (EPJ) Web of Conferences published it. You can read it at: https://www.epj-conferences.org/articles/epjconf/abs/2020/16/epjconf_seaan2020_01002/epjconf_seaan2020_01002.html You can see the different layers of the Sun in high-resolution images using different setups. Best regards. Alfred
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Here in the United States, most of our children are on some type of remote learning program due to yada yada. During processing my images and helping out the kids, some mumblings of " the color purple would look neat." was heard over my shoulder...
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Yeah, back again (sorry). But having sorted out my problems with my star halos caused by the settings in DSS, I have now had a go at combining two images to keep the core from burning out. Not going to win any awards but I am quite happy with it as my "first" proper Orion shot. I'm proud enough of it I sent a copy to my mum! Essentially: 27 of 29 60s ISO1600 shots stacked for the Nebula 30 of 30 20s ISO400 shots stacked for the Core Stacked in DSS with minimum processing to match the output TIF files. TIF Files opened as layers in GIMP, aligned and a layer mask attached to the top Nebula Lay
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Hi All I'm playing around with layers in GIMP as I had no idea how to use them two days ago, but am now fairly comfortable loading a couple of images, aligning them, adding a layer mask and using the paintbrush tool to allow one to come through to the other. The plan is to have a go with some long and some short images of Orion and combine the two final stacked images to get the nebula and the core. I need to work on getting the two stacked images' "brightness" levels more similar as the ones I am playing with are a bit different and when using the paintbrush tool to bring the rear image "out"
