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ultranova

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Posts posted by ultranova

  1. That's come out nice

    That's one angry looking gas cloud,

    looks like a monster from the depths of the abyss, lol

    A bit to low for me to capture in the UK,

    But nice to see something from down under.

    Nicely processed.

    Paul  

    • Thanks 1
  2. Hi, I am unable to download and look at the pictures at the moment,

    But I can offer some advice,

    In General broadband targets when the moon has come up and is less than

    a 1/4 you can get some good results, if you pick a target facing as far away

    from the moon as possible, some broadband light pollution filters, will help a little

    as well, but not by much.

    • DSS debayers the image (I've used generic RGGB for FITs), resulting image has greenish tint hardly any colour even though its a colour DSLR.  is this normal?

    This is quite normal, The color Bayer matrix in your camera by its very definition RGGB, ( this is a filter that sits on top of your pixels )it has only one red, one blue but two green covering each pixel, , consequently,  your camera is more green sensitive than any other color.

    If the moon is out, the data you collect, the signal from the target needs to be stronger than glow coming off the sky glow from the moon,

    otherwise the sky glow will wash out the image, or you will get bad gradients in your image.

    If you live in a area, where the light pollution is low, and the moon is less than 1/4, you should get some fair results,

    but if you live in a moderate to high area of light pollution, even with the moon not out it will seriously affect your image

    chuck the moon in the mix as well with broadband  imaging, its a real struggle to get a decent image.

    I have been there and done that so to speak.

    possibly go down the route of getting your camera modified, at least this would enable you to use narrow band

    imaging, to a certain degree.

    Unfortunately, no amount of processing can get the detail out of a image if it is drowned in sky glow,

    or has a really bad gradient,

    Don't get me wrong,, I am only talking about really bad sky glow, caused by the moon, or street lighting,

    you will be amazed to what information can be drawn out of a image with software,

    On you tube there are loads of good tutorials , try this one for a starting point

    https://www.youtube.com/watch?v=W66Okjh4P2g

    Patience and persistence, is what is required, when i get back later i shall look at your images. 

    hope this helps a little

    Paul

     

     

     

    • Like 1
  3. Hi Graham,

    I am looking at it on my phone screen at moment,  but it does look more sharp...don't know what you have done but good job.

    Thats the only thing with PI it doesn't have selective masking as such.

    Something like photoshop  you can select what parts in detail you want to select.

    Paul

    • Like 1
  4. Wow, that's come out lovely Adam,

    Your Camera scope combination is working a treat.

    Is it my eyes or does there appear to be a bit of O3 trying to squeeze,

    through in a little round patch  with what looks like a bit of HA on the 

    first image , Middle, just over 3/4 of the way to the right, i can not remember,

    seeing that in other images of this target.

    its probably my eyes, lol, ether way a cracking image.

    well done

    Paul

     

     

  5. That a good take, in these horrible conditions,

    just as well you were on a balcony,

    if you were on the ground, your rig would have floated off,

    Its amazing you manged to capture the data you did, with the rain the UK been having.

    Nicely done 

    Paul

     

  6. Congrats on a nice image, and only your 3rd dso,

    10 times better than when i started out,

    As tomato said a slight blue tinge, stars look good, and overall 

    processing looks good, as Ouroboros said you should be able to squeeze 

    a bit more data out of the image, mainly by selective stretching of M31 maybe,

    but in saying that, its better to under stretched than over,,, 

    its finding that happy medium that's the hardest.

    Nicely done, and looking forward to your next target.

    Paul

    • Thanks 1
  7. Congrats getting on with the AsiAir, 

    All appears to be working well, your second take on M31 looks

    a tad green to me, unless its my monitor, also, make sure you take dark 

    frames, and flats if you haven't,  i can see the censor read noise top right,, i get it on my 294pro.

    apart from that a very nice take on M31,

    well done

    Paul

     

     

    • Like 1
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