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Found 8 results

  1. Hi all, new to astronomy. Have bought a Williams 81, canon D450 had it modified. Celestron advance gt mount. I want to use Eos backyard, (apparently it can only use 32 bit as there are no (canon)drivers for 64bit I need to buy a computer to run the above programmes 32/ 64 bit ?haven't a clue what requirements I need.or if a new computer will run it. I also need to buy a Photoshop programme. Think it needs 64 bit to run it Need all to be compatible any help would be appreciated.
  2. Hi everyone, my first post on here, still finding my feet with PS. I have the Noel Carboni Astronomy Tools Action Set, I am trying to remove the purple halos around stars in an image of the Large Magellanic Cloud, however when I use the tool it removes a lot of the colour in the nebulosity of the (dwarf) galaxy (I also used Defringe in Lightroom which had the same effect). I have tried to select the galaxy with the lasso tool and invert the selection and then run the action, however it applies the action to everything regardless. I wonder is there a simple way to separate out the galaxy, run the action and then put the galaxy back in? Can it be done using a mask and then blended back in? If so I'm not quite sure how to do this. Thanks in advance.
  3. Newbie here. I need your help in trying to bring out the nebulosity from my M45 image. To give you a background, this image is a stack of 54x2mins exposures with 43 dark frames. This was taken in our neighborhood with quite a bit of light pollution. I already stacked it in DSS and removed the gradient (using GradientXTerminator) and tried to adjust the levels and curves and all I got was this. Hope you guys can help me on this one. P.S. I also attached the RAW stacked file just in case you need it as well. Thanks! Autosave004.zip
  4. 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/
  5. From the album: CCD venture

    A h-alpha shot of the pelican nebula in Cygnus. 2 x panel mosaic. 10 min subs. 9 x 10m + 9x10m stacks stitched together in ms ICE. ED80 - ATK16HR - Ha clip filter - EQ6 - finderguider 9x50mm PhD2 - photoshop - DSS.
  6. Hey guys I know we all have our own favourite way of doing star reduction (i have used Noel Carboni's action, and i also like using the Minimum filter in PS too) but i think i may have stumbled across another new way, and i actually quite like it! The NC action tends to darken the image a bit, and it also doesn't seem to work well on extremely large stars, and the minimum filter does tend to soften the stars a bit (which can look quite nice, depending on the image) but this technique, if anything, actually seems to tighten up the stars, and you also get an Opacity slider to play with as well, so you can set as little or as much of it as you like. Also, the minimum filter tends to obliterate really small stars, whereas this method doesn't seem to at all, so depending on what you are trying to achieve this hopefully might prove useful to some. So here goes: 1. Create a 'Starless' version of your image. For this i use one of Annie's Actions and finish it off by using the Spot Healing Brush on any remaining star remnants. 2. Put this Starless layer at the bottom and set the blend mode to Colour (the blend mode isn't critical here, especially if you've done the starless image carefully, but using Colour will always ensure you don’t lose any hard-earned detail). 3. Add your Master Luminance (or what you had as your pre-star-reduction image before) on top of the Starless layer. Then duplicate it so that you have 2 of them on top of the Starless layer. So 3 layers in total. 4. Now change the Blend Mode of the Top layer to ‘Pin Light’. 5. Finally, bring down the Opacity of the Middle layer. 70% - 80% seems to work well, and can have quite a big impact, especially so on really big stars, but i wouldn't go any lower than this. I've shown a Before and After example below so you can see the effect. (apologies for the lack of resolution, it's from a very severe crop!) But i'd be really interested to see what others think of this, and whether or not the technique can be improved , or even if it's just to find out if it's actually no good at all! (i have no way of analysing images statistically, i simply rely on my own 2 eyes! lol). I know my way around PS pretty well these days (all thanks to AP) but it's basically all down to trial and error, so i don't consider myself an expert by any means. Just wanted to let people know that in advance!
  7. Hi Folks, Hoping someone can help me with this one as I am a bit puzzled. I have Photoshop CS2 installed on my windows 10 pc and had no problems with it. It happily opens autosave.tiff files that deep sky stacker has created with no issues whatsoever. However I have since got a copy of photoshop CS4 and I thought great, a newer better version. I installed it without any issues but when I try and open my autosave.tiff file that CS2 opens I get the message, Could not complete your request because there is not enough Ram. Now considering that CS2 opens it without issue and that my pc is a HP250 with an Intel core i7 quad core processor with 8GB Ram running Windows 10 with a 2TB hard drive I know that it is not underpowered, also On another Pc the same thing happens. I have tried altering the preferences tab to increase the performance setting regarding Ram useage and scratch discs etc but no joy. Is it just the fact that CS4 will not open these types of files whereas the older version will. If that is the case then I will just use CS2 but it does seem strange that an upgrade gives less usage. Has anybody else encountered this and if so how did you get round it. Thanks in advance
  8. Hey guys, I'm new to this post processing malarky and my previous astro photos wasn't affected by vignetting that much. Now I have a coma corrector it is very much a problem when taking photo's of nebulae. I see some people use an expensive plugin to remove their vignetting/gradient around their borders but if its easily doable manually then I'd like to give it a shot. Could someone help me out by sending me a guide to remove such objects from my photos please? I have many years using Photoshop, but AP post processing is a completely different beast to tame. Cheers, Tom
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