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M101 with SN2023ixf. 44min @ ISO800 F/5 Canon 600D
KevinPSJ posted a gallery image in Member's Album
From the album: Kevin Hurleys Deep Space Objects
M101 Pinwheel Galaxy with Supernova SN 2023ixf. Taken on Friday night 27th May around midnight. Setup: skywatcher 150p with Canon 600d at prime focus. Mix of lights - 24x45s subs, 3x60s and 35x40s. 20 flats. EQ3-2 with RA clock drive. Dithering by hand! I experimented with most performing random dithering in RA and Dec using the slow motion control for Dec and the hand controller for RA with eyeball via finderscope. Worked out pretty well as the noise seems significantly improved compared to my previous attempts.© Kevin Hurley, 2023
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A new post as this feels like a better place than my previous thread. I think I’ve got a reasonable plate solving setup now (albeit, it can still fail if it gets to a sot with few visible stars). I spent a bit of time trying to image M18, but had issues trying to process these in Siril (not enough stars, and when I relaxed this, it ended up rejecting 99 of the 100. I ended up stacking in Affinity, but I’m not seeing to much right now. As this was a first run / seeing if things were working attempt I didn’t shoot any darks/flats etc, only lights. A mix of 10, 20, 30 and 60s subs. I’ve attached a single Fits from one of what I thought looked a better shot… I guess my question is from anyone with more experience than me is - does this look any good (for a single shot)? equipment: Skymax 127 Asi678mc EQ3-2 / Ekos (unguided) m81.tiff M_81_Light_001.fits
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The last year I have ben using the Siril software to pre processing my astrophotos. It replace somewhat AstroImageJ and Fitswork I used a lot earlier. Siril is based on Iris which I used 20 years ago, very advanced at that time. Siril is today a 32-bit processing software and in these days an updated version 1.2.0 beta 2 is out. My tutorial isn't very deep and I'm still learning. There are already a good homepage with examples how to use Siril, my page is more how I personally use it. http://www.astrofriend.eu/astronomy/tutorials/tutorial-siril/01-tutorial-siril.html What I like is the color calibration and the new function to desaturate overexposed stars. Much to learn until it work perfect. For post processing I use the Gimp software which also is a 32-bit software and very advanced. Both Siril and Gimp are free to download. /Lars
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Rosette Nebula. 120 x 15s lights for 30min total exposure. ISO800 with Canon 600D modded.
KevinPSJ posted a gallery image in Member's Album
From the album: Kevin Hurleys Deep Space Objects
Canon 600D and Skywatcher 150P EQ3-2 unguided. 120x15s lights (plus darks and flats). Processed with Siril and Startools.© Kevin Hurley, 2022
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Hello all, I wonder if you seen this happen before. I’m trying to stack around 300 30” images of the Pleiades in Siril. I tried to do it using my computer hard drive but it needed to many GB so I’m using my SSD instead. When I was using my hard drive the processing was much faster but due to short storage it stopped half way through. Now that I’m using my SSD it has been 10 hours already and it’s still pre processing! any advice?
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From the album: Kevin Hurleys Deep Space Objects
Andromeda Galaxy. Canon 600D (astromodded, no filters) at primefocus of my skywatcher 150P on EQ3-2 with RA clockdrive - no guiding. 30 x 25s lights, 10 darks, 5 flats. Processed in SiriL and startools.© Kevin Hurley, 2022
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- skywatcher 150p
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m45_iso100_120x30s_siril_startools_manual_stretch.png
KevinPSJ posted a gallery image in Member's Album
From the album: Kevin Hurleys Deep Space Objects
Reprocessed the pervious image - using Startools again but this time stretched to the point where the noise is visible in the image. The nebulosity comes out now but it's accompanied by grainy bands unfortunately. 120 lights - 30s @ ISO 100, 20 darks, 23 flats, 20 biases. I think I needed more darks.© Kevin Hurley, 2021
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Hi All, Being mostly a visual observer, I am now beginning to venture more and more into astrophotography (mainly because of increasing light pollution). After some tinkering I managed to set up a learning rig consisting of my NexStar 102SLT, Canon 700D and Astroberry INDI server. I can set this up on my balcony, and once I have aligned and focused the telescope, I can control it remotely over WiFi from KStars on my laptop (and from the comfort of my bed). This way I took some subs of M36 to see what I can achieve with this modest setup, and while processing with Siril, detected what I first thought was an artifact - a tiny red dot next to the cluster. I had attempted to take some darks but did not intend to use them as I had overlooked setting the ISO on the camera. Now I checked these and could not see any hot spots. Kind of intrigued I checked the region on Stellarium (I had not downloaded catalogs on KStars for fainter stars) and had difficulty matching up the star fields. It looked like Stellarium was missing one of the stars near this object, and the red dot was also absent. I then did some Internet digging and found the red dot to be the carbon star A* OW Aur. I had read about carbon stars before but had never seen anything this red on my previous images, so this started me off on a quest to see if this was the reddest star known 🙂. This was easier said than done but after a while I managed to figure out that it has a color index of 5.5, and as it turns out it seems the crown for the title of the reddest star known might belong to V* DY Cru with an index of 5.8 . This list of the reddest stars in the sky does not include A* OW Aur, but it would have ranked 4th or 5th reddest if it did. The image is from 18 10 second subs at ISO 800, and Bortle 5 site - A* OW Aur in red circle. Thanks for reading!
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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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Hi All, Having had to move to an apartment where I could not use my CPC 1100, I decided that I have to see what I could do with my NexStar SLT 102 (alt-az achromatic 102mm f6.47 refractor). Setting up on my narrow balcony was challenging and the altitude bearing was so loose that it almost moved from the weight of the Canon 700D. I could not see M31 in the estimated 3.5 magnitude sky so I did a two star alignment and used the live-view to focus on a bright star. I then took a 15 second exposure after slewing to M31 which allowed me to see that I had it in the field of view. After a few more 15 second exposures and playing with the motion controls I managed to get it centered. The resulting picture is from 39 subs of 30 seconds at ISO 1600, 9 flats. The images were stacked and stretched with Siril and then I played with the curves on Gimp, cropped and scaled. Not too unhappy.
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Hello, we are glad and proud to announce that a new version of Siril has just been released and is now available to all users: Siril 0.9.7. 1 - Presentation: Siril is (was ?) meant to be Iris for Linux (sirI-L), but is also now working on Windows (tested on 7, 8 and 10). It is an astronomical image processing tool, able to convert, pre-process images, help aligning them automatically or manually, stack them and enhance final images. 2 - How to install the release: Each new version is produced with several packages for most OS we handled. We try to build maximum of packages and cheer you to check if a package does exist for your OS at this page: https://free-astro.o...tle=Siril:0.9.7 A packages is available for all these systems: GNU/Linux (deb, rpm, appImage) OS X Windows 3 - New features: Siril 0.9.7 is a stability release: it contains several bug fixes and some improvements over to the previous version, Siril v0.9.6. The most important feature we implement in this new version is the new automatic registration algorithm. This algorithm uses a robust RANSAC routine that optimize the first search. We sincerely hope you will enjoy using Siril and you will produce nice shots. The Siril development team
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Hi everyone, I'm pleased to share a good news with you. Indeed, thanks to Partha Bagchi (https://www.partha.com/) we are now able to provide you an .app file for OS X users. This is a good improvement because no Homebrew or Xcode are needed anymore. Also !! the app is 10% faster for stacking. You can download the app here. Enjoy !!
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Hello, we are glad and proud to announce that a new version of Siril has just been released and is now available to all users: Siril 0.9.4. 1 - Presentation: Siril is meant to be Iris for Linux (sirI-L). It is an astronomical image processing tool, able to convert, pre-process images, help aligning them automatically or manually, stack them and enhance final images. 2 - How to install the release: Each new version is produced with several packages for most OS we handled. We try to build maximum of packages and cheer you to check if a package does exist for your OS at this page: http://free-astro.org/index.php/Siril:0.9.4 People on Ubuntu 16.04 or Linux Mint 18.XX can now download PPA repository in order to simply install last version of Siril: sudo add-apt-repository ppa:lock042/siril sudo apt-get update sudo apt-get install siril We've also decided in this version to produce standalone application AppImages for using Siril in many GNU/Linux distributions. However, it seems that the package does not work very well on all systems yet. Remember that Siril is a software for UNIX-like system, in consequence it does not work on Windows. 3 - New features: Siril 0.9.4 is a stability and minor improvements release: it contains several bug fixes and at least 10 improvements over to the previous version, Siril v0.9.3. Fixed issues with SER in generic processing function Fixed inability to open FITS when filename had parenthesis Fixed selecting new images did not update the number of selected images Fixed histogram sliders lag on OS-X Fixed message "Error in highest quality accepted for sequence processing....." during stack of %, even if quality data are computed Fixed sequence export to SER with unselected images Fixed global star alignment with angle close to 180deg Fixed undo cosmetic correction Fixed crash in peaker function Fixed aborting global star registration summary Fixed sequence list which was unreadable with dark GTK theme Fixed the update of the list of images Added support of internationalization: French, Dutch, Chinese, Italian, Arabic Option for logarithm scale in histogram transformation Add siril.desktop in archlinux Added support for exporting sequence in avi format Option to make a selection for global star registration in a smaller region Read commands from a file Option to follow star in registration Added support for resizing exported sequence Added support for reading and writing SER timestamps Added support for RGB alignment Added functionality to fix broken (0 framecount) SER files We sincerely hope you will enjoy using Siril and you will produce nice shots. The Siril development team
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Hi, Been a long time since i posted any images, been on a break from astro and having some gear trouble. I collected a fair amount of data in the spring, but I haven't really processed it for various reasons. A constant problem has been heavy vignetting with my small 1,25" filters and my Altair Astro 115M camera, causing all kinds of calibration problems and processing woes. I have finally bit the bullet and ordered some 36mm filters and a new filter wheel, can't wait to use it in anger. Even though I have PixInsight I decided to have a play around with Siril and Affinity Photo, and I found that I really enjoyed working with those software packages, something I cannot say about PI.. So without further ado.. Quick and dirty first process with Siril and Affinity Photo. GSO 6"RC at 992mm Altair Astro 115M Baader 1,25" LRGB filters EQ6 NINA for acquisition About 2 hrs of L and 40 minutes of each i RGB.
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From the album: Kevin Hurleys Deep Space Objects
First attempt at doing dithering manually - with only a clockdrive. Seems to have gone pretty well. 60 x 30s light frames at ISO800. 10 flats. No darks. Dithered by hand. Every 5 frames or so I applied a little nudge to Dec or RA while ensuring the smudge of M33 stayed in the center of the finderscope. Quite challenging!! But less annoying that adding another 15 min of taking darks at the end of the session.© Kevin Hurley, 2022
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- m33 triangulum galaxy
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M33 Triangulum Galaxy. 60x30s subs, ISO800. Skywatcher 150P 750mm F/5.
KevinPSJ posted a gallery image in Member's Album
From the album: Kevin Hurleys Deep Space Objects
Re-processed the previous image but added 'banding removal' option in Siril. Seems to have made a significant improvement in noise reduction.© Kevin Hurley, 2022
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