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Adreneline

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About Adreneline

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    Mathematics, Music, Motorbikes
  • Location
    Derby
  1. M81+M82 HDR + Ha

    Decided to combine my mono and osc dual rig to image M81 and M82. This is: I took 8 each of 300s, 360s, 420s, 480s and 540s using the Atik414+SW-ED80DS separately pre-processed in PI and then each master registered, background extraction applied and then combined using the HDRComposition process. The HDR image was then stretched using ArcsinhStretch followed by colour and detail enhancement using MLT and ColourSaturation. At the same time I also took 15x600s of Ha using the Atik428+WO-ZS71 (I also took 8x900s but chose not to use them). The 600s were pre-processed in PI and then AdaptiveStretch applied. The HDR and Ha images were then combined in PS using a lighten layer with 50%Ha mixed to the Red channel. Any feedback on how I might improve the result with the data I collected would be much appreciated. Thank you for looking. Adrian
  2. M42 Orion Nebula

    I really like your image. Personnaly I prefer to see Orion set against a dark sky background - it seems more dramatic to me. I understand that some prefer the more dynamic image when all the surrounding nebulosity is also imaged. I guess you pays your money and you takes your pick. Did you take one image from DSS into PS (using the separate Groups for the two different exposure settings) or did you stack the different exposures separately and then combine them as an HDR image within PS? I am experimenting with an HDR approach at the moment with some images I took of M81/M82 (15 each at 300s, 360s, 420s, 480s and 540s along with 15x600s of Ha) using HDRCompsition in PixInsight and combining them in PS using layers and masks. It gives me something to do on the cloudy nights! Thank you for sharing. Adrian
  3. Which Refractor?

    I also love my SW-ED80DS-Pro + flattener - it works really well with both my Canon 70D and Atik 414osc. The only word of caution I would add is that my experience with the supplied focusser was not good; I wasted a lot of imaging time because the focussing unit would tend to slip during imaging. I tried the published fixes but for me it did not solve the problem. I am aware others have found it to be satisfactory or they have found the fixes to work. I solved the problem by fitting the Baader Diamond SteelTrack - since then it has been perfect and holds its focus irrespective of load/position. Adrian
  4. Hi. Well I recently took a series of lights at iso200, 400, 800 and 1600. I pre-rocessed each iso in PI and then did an initial stretch of each stacked image iso (using ArcsinhStretch). I then combined the registered iso masters in PS using http://www.astropix.com/html/j_digit/laymask.html It worked for me. HTH
  5. M31 under a full moon : RGB+L+Ha

    Hi Carole, Thank you. It's not too bad to the north through east - south could be better - as for anything to the west, well the house is in the way! I wasn't expecting to get anything great. I was exploring using the 70D with the 428 and combining the images. I used Registar as well but in the end PI did it the registering very well and so I went with that. I am finding the combination of PI and PS much easier to manage, especially regarding colour and combining the various components of the image. It's all good fun - and it makes my brain work - that is the most important thing. If I use it hopefully I won't lose it! Thanks again. Adrian
  6. Hi Everyone, I am trying to get to grips with the best way to use my new dual rig. Despite the full moon at the weekend I thought I would give it a go anyway. This is 32x60s for ISO200, 400, 800 and 1600 from a unmodified Canon 70D on a SW-ED80DS-Pro. Pre-processed in PI and stretched carefully and conservatively with ArcsinhStretch. The four non-linear images were then combined in PS using the Lodiguruss method. Combined image processed in PI according to LVA tutorials. At the same time I took 20x180s L followed by 10x300s Ha with the 428ex on a WO-ZS71. Pre-processed and processed in PI and StarAligned/registered with the RGB image in PI. The registered RGB, L and Ha were then combined in PS with 20% Ha added to Red in 'Lighten' mode and 40% L layered on RGB. I prefer subdued colours so I have intentionally held back on the colour saturation. It's far from perfect and has a host of problems but the processing exercise was informative and the end result not too bad despite the full moon - but that is my opinion and I would value yours, along with any advice on improving the processing method. Thank you for looking. Adrian
  7. M51 - Which Version - Please help me decide!

    I also prefer Version 2. A very nice image - I really like the fact the colours are not over done. I wish I'd taken it! Thank you for sharing
  8. Hi Goran, I have a MBP running 10.13 and although I don't use it for guiding I have used it with both my Altair IMX224 and my ZWO AS120M and on both ocassions it did not require drivers to be loaded; most things you plug into a Mac run in native mode and they just seem to work - unlike Windows, which gets upset if you plug into a different USB port. If I use Windows running within Parallels on the MBP then everything needs a driver - just everything! - and even then it might not work I would just plug it in and see what happens. What do you have to lose? HTH. Adrian
  9. RAW to FITS batch converter for Linux

    Hi Oleg, This is the version I use - running on a 2013 MacBook Pro. My programming experience is very dated - 6502 processors on home computers, IBM8080 and Fortran IV on ICL1900 mainframes - all way back in the 1970's and 80's. Since then I've been a GUI 'wrapped in cottonwool' user I'm afraid. I am currently trying to get to grips with Linux (via VirtualBox on the NUC) and programming an Arduino (via the MBP) and at my age it could be too much! Thank you again for a very useful utility. Adrian
  10. RAW to FITS batch converter for Linux

    I have Raw2Fits running under Ubuntu Astronomy within VirtualBox on a NUC-PC (I gave up with the MacBook!). This is a really steep learning curve for a non-Linux person. I have tried the current version and it worked perfectly on my Canon raw files, converting them to individual RGB .fit files. Thank you. Adrian
  11. M42

    That is certainly a very impressive and beautiful image Goran; even if I collect that much data I am not sure i have yet achieved the processing skills necessary to achieve that sort of result. In one respect I quite like the 'isolationist' image of the nebula against a dark'ish background but then I also like the full drama of the complete nebula and surrounding nebulosity. I have seen dramatic images of M81/M82 with surrounding IFN but then also like to see them set in solitary isolation. I guess you pays your money and you takes your pick. My biggest battle at the moment is ensuring the image is in focus and that I treat the noise reduction sympathetically / correctly / appropriately, etc. etc.! Noise is my nemesis! And have you noticed how cloudless nights and full moons always seem to go together? What's all that about!? Adrian
  12. M42

    Thanks Goran for the advice on where to go next. Even at 15s I seemed to get some clipping on the star cores, in fact I had a major problem with 'pink' cores which I've not had before and had to address by separating out the RGB channels and using a soft brush in PS to address the problem on each problem core before recombining the individual channels; there may have been a much better way to fix it in PI but the recommended Repair HSV Separation script produced some wild results! A thread on CN seemed to imply it was a problem with the interpolation from 14 bit to 16 bit and resolving clipped signal levels; I really don't know enough to comment. ISO1600 will definitely require a moonless night so fingers crossed for a couple of weeks time from now - I might even try and grab NGC2024 at the same time - or is that asking too much? Thank you again. Adrian
  13. M42

    My first attempt at combining different exposure images in PS. This is 20x15s + 20x90s using an unmodified Canon 70D with an SW-ED80DS-Pro. Pre-processed in PI and ColourCalibration and ArcsinhStetched in PI plus the usual noise reduction and detail enhancement using MLT. I tried unsuccessfully to get the HDRComposition to work satisfactorily in PI hence the move to PS using http://www.astropix.com/html/j_digit/laymask.html I also took 20x30s and 32x60s but I am not sure if there is any great value in adding those to this image. Any comments, observations or advice would be most welcome. Thank you for looking. Adrian
  14. Seagull Nebula IC2177

    Carole, I am so impressed! Something to aspire to - along way down the track for me I fear. Thank you for sharing.
  15. RAW to FITS batch converter for Linux

    If only I could get Ubuntu to run on my 2006 MacBook I would like to give your software a go - it looks very interesting. Back to the MacBook
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