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Hello, I'm looking for some advice with combining different filter data in PixInsight. I currently have a few hours of the horsehead nebula using the Optolong l-extreme filter, and a few hours with the L-Pro because I forgot to swap it out! I also have relevant darks flats and bias frames. I'm also using an ASI533MC Pro. I'm using the same exposure time for both. What would be the best way to combine these in PixInsight? I usually use the WBPP script, but is this the best way? Would it be better to stack them individually and combine them using pixel math? Any help would be appreciated! -
Hi, So in Pixinsight I tried out using WBPP, i put my lights, darks, flats and flat darks through the script and the attach image came out with this white vignetting. I've never used WBPP before so wouldn't know the first place to look in the settings to fix this. I'm gonna hazard a guess and say it's something to do with my flats. I use a redcat and 183 mc pro astro camera. Any help appreciated. -
From the album: Liverpool Telescope
Messier 88 galaxy 9 x 90 s Blue 7 x 90 s Green 19 x 90 s Red Some of the frames are 120 s exposures Processed in PixInsight© Wim v Berlo
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From the album: Liverpool Telescope
My take on the little Dumbbell. Data from the Liverpool telescope. Processed in PixInsight.© Wim v Berlo
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From the album: Liverpool Telescope
© Wim v Berlo
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From the album: Liverpool Telescope
© Wim v Berlo
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From the album: Liverpool Telescope
© Wim v Berlo
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From the album: Liverpool Telescope
© Wim v Berlo
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From the album: Liverpool Telescope
© Wim v Berlo
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messier 8 The Lagoon Nebula ( Messier 8, NGC 6523 ) in Sagittarius
MikeODay posted a gallery image in Member's Album
From the album: Mike's Images
The Lagoon Nebula ( Messier 8, NGC 6523 ) in the constellation Sagittarius - by Mike O'Day ( https://500px.com/mikeoday ) The Laboon Nebula ( M8 ) is visible to the naked eye under dark skies from most latitudes except the far north. Seemingly covering an area about three times that of the full Moon, M8 actually covers an area somewhat greater than 110 light years and is around 4300 light years from Earth in the Sagittarius-Carina spiral arm of the Milkyway galaxy. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: Messier 8, NGC 6523 - Lagoon Nebula. also contains: NGC 6526 NGC 6530 NGC 6533 IC 1271 IC 4678 7SGR 9SGR Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount. Orion auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D300 (unmodified) (14bit NEF). Field of view (deg) ~ 1.35 x 0.90. 20 x 120 sec ISO400. 26 x 30 sec ISO 1600. 23 x 240 sec ISO 200. PixInsight and Photoshop. 2 August 14 . re-processed 24 April 2016 to include the additional subs ( the first version only made use of the 23 x 240 sec ISO 200 subs ) and putting use the processing lessons I have learnt over the past year.© Copyright Mike O'Day 2016 - all rights reserved
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From the album: Mike's Images
Orion Nebula Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO800, JPEG Fine, Long Exp. NR on. HDR processed in PixInsight - 20x120sec, - 20x30sec, - 20x 8sec, - 12x4sec. Individual groups aligned and integrated. Then four integrated images aligned and HDR combined. 17 January 2015 - reprocessed 25 Apr 2015© Copyright Mike O'Day 2015 - all rights reserved
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From the album: Mike's Images
IC2948 Running Chicken Nebula in Centaurus ( bright star is Lambda Cenauri) (RA 11h 39.6m - Dec -63deg 37.2'). Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT (on Pier) Orion auto guider - PHD2 (RA only - Dec ungiuded). Baader MPCC Mark 3 Coma Corrector, UHC-S (Nebula) filter, Nikon D5300 (unmodified), Long Exp Noise Reduction on, 14bit NEF, 13 x 300 sec ISO 200. PixInsight & Photoshop 28 March 15© Copyright Mike O'Day 2015 - all rights reserved
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Also known as the Theta Carinae Cluster, The Southen Pleiades is a very bright open cluster in the Carina constellation. It was discovered by Abbe Lacaille during his visit to South Africa in 1752. Containing around 60 stars, IC 2602 shines with an overall magnitude of 1.9 and its brightest member is Theta Carinae with a visual magnitude of 2.7. This cluster of young blue stars is relatively close to us at "only" 479 light years. 5 May 2018 The Southern Pleiades open star cluster ( IC 2602 ) in Carina ( please click / tap on image to see larger and sharper ) Image details can be found here.
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I know I am unreasonable, but there is so much good free software around for astro-imagers, I have a certain resentment about paying for software. But a string of circumstances that have all arrived together is making me seriously consider Pixinsight. At €276 (including VAT) it isn't cheap, but I have been exploring a series of videos that show what it can do and, apart from making my coffee, it seems to cover just about everything that I can envision wanting. But I have a very specific question for current users of PI: Is there anything about it that makes you wish you had not bought it? Alternatively, if you tried the free trial period and then did not buy it, what was it that made you think it was not worth it? Getting all the bad news up front will possibly persuade me out of it, or at least I will know what the potential issues might be before parting with my cash. Thanks.
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I have a problem with stacking images from my 5D MK3, the files are huge, I’ve tried both- Astroart V5 and DSS, Astroart fails to stack the CR2’s because of a memory issue? Deep sky stacker gets there in the end but the colour is washed out and no amount of tweaking can get an acceptable result. Pixinsight – er well it’s so long winded I cannot for the life of me understand it; I suppose I would have to batch convert all the .CR2 files into .Fits then process .. am I correct? Any thoughts? -
File Dirbble 1.4.0 1. This version can see the fits and xisf header information. 2. You can edit the fits file header. 3. You can use full automatic file moving function by clicking the button. It uses fits and xisf's header info. FileDribble_setup_v1.4.0.zip
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At @swag72's request, I'm putting together a quick guide as to how to use the Pixinsight annotate script, including how to produce and use custom catalogues. [Mods - please feel free to move as needed if this isn't the right place to put this!] I'll use an image to demonstrate this - this is the (unprocessed!) L channel from an image of the region containing and to the north of the Coathanger. First step is to solve the image - most of the time, this is simple to do using the Image Solver script. The Image Solver needs some initial coordinates to setup the search. You can search for the image coordinates using the Search function if they aren't already set - if they are being dragged through from the image (eg from SGP) they will already be populated (or at least be close). The coordinates don't need to be accurate, but the closer the better - at the least, make sure the image contains the seed coordinates. Here, I've searched for "Collinder 399" and it returns the coordinates of the Coathanger (at the bottom of the image). Set the focal length, pixel size, and hit OK - you shouldn't need to change params unless it fails to solve (beyond the scope of this guide!). If it all goes OK, then you'll get a set of coordinates, image size displayed in the Process Console. (HINT: It's sometimes easier to solve a linear image if a non-linear refuses to solve). At this point, the image has a solution, and it will be retained as long as you don't crop, rotate, scale, resize, etc the image. (it'll warn you if the action you are performing will affect the solution). At this point, we can move onto the annotation. The default settings for the Annotate script (Script > Render) are shown - this is a very simple set of parameters (though, the NamedStars and Tycho catalogues will result in a very busy annotated image!!). The options available for each of the catalogues allows the user to set options such as the colour of the marker/text, the size of the text and the relative position of the text with regards to the centre of the object. The user can also choose to include other catalogues in the routine - there are quite a few catalogues available to the user by default - these can be found by using the "+" button below the "Layers" list of catalogues: At this point, hitting "OK" is usually good enough to get an annotated image produced - the result of using the script with the VdB and Sharpless catalogues added, and with the Tycho/Named stars catalogues off. Next up is how to create new catalogues for more obscure targets....- 12 replies
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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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Hi SGLers, I’m hoping a PixInsight guru can help me. I’m a PI beginner, but am having fun learning. My question is about the level of noise in my images. After integrating and performing an STF stretch, the resulting image always looks quite smooth. But it doesn’t take long at all – just a DBE really, maybe then a gentle stretch – for the image to become really noisy. And then a lot of my editing is centred on battling that noise. My camera is an ASI2600MC-Pro, which I cool to -10. For a recent experiment, I gathered 20 hours of data from 120s subs. With that much integration time, and the low-noise camera, I was hoping for lower noise than I actually got. (I am shooting from Bortle 8, however). So my question is: are my expectations wrong, and actually the amount of noise I have is what’s to be expected? Or, have I messed something up in pre-processing or integration? In case it’s useful, I ran SCRIPT -> ImageAnalysis -> Noise Evaluation on the image straight out of integration and got the following: Ch | noise | count(%) | layers | ---+-----------+-----------+--------+ 0 | 2.626e-01 | 18.39 | 4 | 1 | 1.037e-01 | 12.01 | 4 | 2 | 1.636e-01 | 11.10 | 4 | ---+-----------+-----------+--------+ I’ve also uploaded the file (1.16Gb) for anyone kind enough to help investigate further: https://drive.google.com/drive/folders/1wB3May69oEWniF8hikueUkSS-TJvjMKC?usp=sharing Thanks! -Lee -
I've got a 5 year old desktop, which i think performs decently and does my Pixinsight processing pretty well. However, i want to change to a laptop for the form-factor, but i don't want to compromise on performance. This is my rig: https://www.userbenchmark.com/UserRun/27054387 What machine do you use and how does it perform with Pixinsight? Any folk familiar with computer hardware able to provide steer on whether i'm due an upgrade? Looking to understand how others do their processing. -
I recently posted a picture of B33 using my Optolong L-Enhance filter which was not too bad, a bit red, for my first time trying out Pixinsight. Last night I managed to get nearly 2 hours using my IDAS D2 LPS filter and after watching many Youtube videos I've managed to get the following using my Esprit 100ED and modded canon 450D, 21*300s Lights, flats, darks and bias frames. I think I'm starting to get my head around post processing.
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Galaxy Centaurus A ( NGC 5128 ) in the southern constellation Centaurus ( please click / tap on image to see full size ) ............ Updated again - to try to bring out more faint detail ... ............ Updated images ... ............. Originals ... ( 100% crop ) Centaurus A is relatively near to us in the local group of galaxies and is around 11 Million light years away. The unusual shape of Centaurus A is believed to be due to an ancient collision between a large elliptical galaxy and a much smaller spiral galaxy. With an apparent magnitude of +6.8, Centaurus A is the fifth brightest galaxy in the night sky and in the middle of the 20th century it was identified as being the strongest radio source in the Centaurus constellation. Details: Galaxy - Centaurus A ( NGC 5128 ) Image ( Nova.astrometry.net ): Center (RA, hms): 13h 25m 28.924s Center (Dec, dms): -43° 01' 25.486" Size: 60.5 x 41.1 arcmin Orientation: Up is -89.9 degrees E of N Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ). Corrector: ASA 2" Coma Corrector Quattro 1.175x. Effective Focal Length / Aperture : 1410mm f4.7 Mount: Skywatcher AZ Eq6 GT Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2 Camera: Nikon D5300 (unmodified) (sensor 23.5 x 15.6mm, 6016x4016 3.9um pixels) Format: 14bit NEF Long exposure noise reduction: off Filter: none Calibration: No darks, just master bias and master flat HDR combination of eight sets of exposures (27, 28 & 29 April 2017): 85 x 240 sec ISO 800 16 x 120 sec ISO 800 16 x 60 sec ISO 800 16 x 30 sec ISO 800 16 x 15 sec ISO 800 16 x 8 sec ISO 800 16 x 4 sec ISO 800 16 x 2 sec ISO 800 Pixinsight May 2017 Links: 500px.com/MikeODay photo.net/photos/MikeODay www.flickr.com/photos/mike-oday
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Hi SGL Hive Mind, I’ve got a real head-scratcher of a problem, and I’m hoping someone here can help me solve it. I’ve been experimenting with seeing the effects of increasing integration time on background noise levels. My understanding is that the greater the total integration time, the smoother the background noise should appear. But I’m finding that beyond one hour of integration, my noise levels see no improvement, and even maintain the same general structure. I flagged this in another thread but think it deserves its own thread, so I thought I’d begin anew. I figure either my understanding of integration and noise is incorrect, or maybe I’ve messed up something in pre-processing. I’ve conducted a lot of tests with different settings, copied below, but nothing seems to make much difference. I’ve uploaded my data to GDrive, in case anyone’s feeling generous with their time, and would care to see if they get the repeated noise pattern! (Being GDrive, I think you need to be logged into a Google account to access). My telescope is an Askar FRA400, and the camera is a 2600MC-Pro. All a series of 120-second images shot from Bortle 8 skies. For each test, I applied some basic functions in PixInsight just to get images to compare: ABE, ColorCalibration, EZ Stretch, Rescale to 1000px. I used SCNR to remove green from the first tests, but forgot that step for the second batch. Any idea what's going on? Why isn't the noise smoothing out past the one hour mark? Here are my PixInsight ImageIntegration settings:
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I've written a walk through on how to download and use custom VizieR catalogs to annotate your images. This is a really neat feature of PixInsight. http://blog.andrewluck.me.uk/?p=1157 Andrew
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I closed the process explorer from the left bar earlier and I can't figure out how to get it back. It did reappear once when I restarted it, but now it's gone again. And that's not the only thing about it's interface I don't get, but the rest can wait until later... for now at least I have a workaround, which is to select from the process menu instead. Not much in it, apart from old habit of using the bar on the left...
