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Droogie 2001

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Everything posted by Droogie 2001

  1. Couldn't resist having a quick go! (Added to my first post) Not much brighter but if I push it too far it becomes too apparent. Anyway I will consider the effects of HDR more scrupulously in the future.
  2. Hi Graem, Thanks for the comments. No problem with pointing out suggestions and I really appreciate the feedback. I agree with you that I have over done the HDR. The original output was very bright with little detail and so was aiming to reveal the columns / pillars of gas located within the nebula, the end result does however lack depth. I did ponder this at the time as I really wanted to obtain that detail, looks like I went too far. I will see if I can edit it to a better result or come back to this when I have obtained some O3. Thanks you everyone's comments.
  3. Thanks Rodd. Yes the mono look can really bring out the detail. Still would like to add more Ha but at least with O3 I can produce a colour version. I will get an SII filter at some point but the Chroma 3nm are £485 and having barely had chance to get O3 it will have to wait a while.
  4. Whilst waiting for the California Nebula to rise to a decent altitude I thought I would try out NGC7822. This is a 6 hour Hydrogen Alpha image. I would like to add some O3 to the image but will have to see if the weather allows this. Please click the image as the preview loses a lot of detail.. Scope: William Optics Star 71 Mount: Celestron AVX Camera: Moravian G2-8300 – Mono Filter: Chroma Ha 3nm 14x1500s exposures (6 hours) at -30c Total 6 hours. Flats & BIAS Processed in PixInsight Revised 14.10.18 - Brighten Core
  5. I have the Chroma Ha & O3 3nm. Purchased them from Bernard at Modern Astronomy. https://www.modernastronomy.com/product-category/filters-wheels/chroma-filters/ Copied this from the Modern Astronmy website: "Try the Astronomy filters professionals use at many major observatories, NASA and JPL – Chroma! In business for 24 years and experienced in many scientific disciplines, Chroma has made filters for several US “famous name” companies, but now operates under its own banner in the Astronomy field." Have been very pleased with them though I have never had Astrodon's to compare against. I went for the Chromas as they offered the ability to placed them into an ASI 1600 filter wheel, whereas (apparently) you could not do this with the Astrodon's? I think they are worth the money no halos and stars are easier to control.
  6. I use PI and after a steep learning curve I am starting to achieve some satisfying results. But be aware my first outputs from PI were terrible. Take you time and save separate project files so you go easily go back and try other settings. I spend a lot long on post processing that capturing the original data. This can range from 5-10 hours in ,most cases. This may seem crazy and maybe down to me to still learning PI but I have found the results very rewarding.
  7. Thanks for the tips, I will have a look into this.
  8. Thanks. I have tried deconvolution in the past but found it offered me no visible benefits. Clearly I am missing something and will have another go at the deconvolution process. When I look at other similar exposed images on similar equipment their images seem a lot sharper. My image above looks like it has lost a lot of detail until you click on it, I suppose that's the forums display method. If anyone have any further tips on sharpening in a Pixinsight then much appreciated.
  9. Manage to add some O3 data to my previous Ha data captured from last year. The Veil Nebula certainly contains a lot of O3 as the pre-processed sub was nearly as bright as the Ha. I seem to struggle with sharpening without introducing more noise, this is true with all of my images. 6 Hours is not especially long so maybe more subs is the answer? Scope: William Optics Star 71 Mount: Celestron AVX Camera: Moravian G2-8300 – Mono Filters: Chroma Ha 3nm & Chroma O3 3nm 16x900s exposures (4 hours) at -25c 11x900s exposures (2 hours 15mins) at -25c Total 6 hours 15 mins Flats & BIAS Processed in PixInsight
  10. Thanks. I find them to work well with my setup. Stars are quite easy to work with no halos.
  11. Despite the recent good weather we are experiencing in the UK I have not had many opportunities to go out imaging. As the Pelican Nebula is well placed I thought I would give it a go, would be nice to get more subs. Decided on an RGB blend. Scope: William Optics Star 71 Mount: Celestron AVX Camera: Moravian G2-8300 – Mono Filter: Chroma Ha 3nm, OIII 3nm 7x1800s exposures (3.5 hours) at -25c 3x1800s exposures (1.5hours) at -25c Total 5 hours. Flats & BIAS Processed in PixInsight
  12. Have been watching these videos for a few years. Try and find the videos when they goto the VLT in Chile. Amazing location .
  13. I too tried to use Meta Guide but I failed to improve my guiding. Probably me rather than the program as it sounds like a well thought out idea but sadly not for me.
  14. I also had a great time viewing the moon on Sunday night. I am usually an imager but made a promise to myself earlier in the year to get back to basics and enjoy some visual astronomy again! Had a good look at Posidonius, I could clearing see two rilles running across the crater. Then spent some time at Lacus Mortis observing the rilles within its perimeter. Worked my way up the terminator and took in Rupes Altai and of course the stunning Theophilus crater. Lastly as it was nearby I went over to see if I could spot the Apollo 11 landing site. After many comparisons with various books I am 99% I got the location. The precise location is distant from any significant craters (well in mind it is!) making it more difficult than I had anticipated. You can see why they chose the location for its barren landscape, resulting in a safer landing spot. Though of course in reality I understand that there were many large boulders and craters that had to be negotiated before landing. All in all, a good night.
  15. Love the colours, what blend are you using? Is the reworked image a crop of the original or a new one? If its a crop then it has retained alot of the nice details.
  16. No problem. I have been and done that before. I find I start to lose focus if I keep working on an image for too long.
  17. Personally I prefer the previous image as it just seems more natural to me. Just my preference, both are still excellent images.
  18. I really like both of them but the re-worked one looks better, the stars are more nature looking.
  19. They are 5mm and 10mm M48 spacers so 15mm not 17mm. Will still leave you off by 2.72mm. I mentioned Star Light Express as you noted it in your original post, the filter wheel being part of the imaging train. Sorry can't help anymore.
  20. So you are over by 12.28mm already and you need to reduce this as opposed to my issue where I needed to extend the distance? Can Starlight Express offer any help? It doesn't seem right that you need to remove distance. That send it took me a fair while to get my head around this too. The only comfort I can bring is once its sorted you can just move on.
  21. Not sure why your M48 / T2 would slip inside the focuser? I purhased an Altair Astro M48 17-29mm Variable Spacer Set (3 part) which attach nicely to the M48 on the OTA. https://www.altairastro.com/m48-17-29mm-variable-spacer-set-3-part.html I then used the 5mm and 10 mm only to get the back focus I requried. All I would add is that I have an OAG so you may need to select the correct rings for your setup. I now only need to extend my focuser 3mm to gain focus.
  22. Very nice. Maybe I should dust off my 8SE? Looks like you have managed to really work that tube
  23. Good luck with the new camera. Just read through the spec differences between my Mark 1 and 2. Aside from shorter download times (will save me 6 secs an image...) and adjustable adapters there does not seem to be a huge difference. I do like the new look of the Mark 2 though. If they are priced the same as the Marks 1 then all good. Unfortunatley I cannot justify trading in my Mark 1 for a Mark 2. It's interesting to see Moravian aren't rushing out the latest and greatest CMOS chip but instead evolving their exisiting cameras.
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