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BlockHead
About
- Username
- BlockHead
- Joined
- Visits
- 257
- Last Active
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- Member, Administrator
Comments
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By stretching...I am guessing you changed the PSFs of stars to such a degree...they no longer look like stars to a StarNet++. Perhaps SXT would do better... but why stretch at all before removing them? That is the test right?...if you do not stretc…
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That requirement for properly drizzled data is a killer.And you also know that the colors have a crossover between filters- decreasing color contrast.Fine...I am probably behind in my assessment. My experience to date has been the colors simply lack…
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OSC color is already a detriment... there is a loss of contrast right off the top for a number of reasons. -the Blockhead
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Your image does look like pretty good data to me. I can certainly see the bluish OB associations that you can boost in terms of color contrast. Yeah, there are many different approaches. As I mentioned in a recent e-mail I will be making "Deep Sky A…
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This looks like the long path issue to me. (This is not a new problem with PixInsight).Please review this video: -the Blockhead
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Hi Dean, Your image has significant artifacts. The brighter round thing with the dark top right is not a real feature of the sky. It could be due to either flat field errors or...that crazy moon. -the Blockhead
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No, MultiScale Gradient correction does not mitigate the primary ill-effects of the bright moonlight.The increased brightness of the sky will always add (photon) noise to your data.. making it harder to achieve the contrast the dark skies provide. N…
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Astrometric solutions are computed for masterlights.To apply your logic, you would assume that WBPP knows you are making more than one master set as a set of RGB images that as a triad will make a single color image. This is true that in this case y…
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Yes, roughly correct. You can take Luminance if you have enough color data...and just pound away- but isn't the same time savings as was previously done with CCDs by binning. Today a compromise is to also combine the RGB masters to create a syntheti…
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Hi Shannon, 1. You do not need to have folders separated by filter. You can if you want- but you can put all data in each filter into folders that require matching calibration frames. The reason is because WBPP always matches files based on filter b…
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Yes, these are new features and I have not yet updated FastTrack Training... this takes me a little time to do (usually a month or so to redo an entire course). ImageSolver has been moved to the Astrometry script menu now. You will find there are s…
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Yes, your initial description of binning is correct. However it isn't "quadruple the light sensitivity" because you still have readnoise. In addition, CMOS detectors do not have much in the way of benefit in terms of binning for the purposes of sens…
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Yes, you have it correct (and yes, I do explain it later in the sections about image rejection and normalization). When you stack images you will be rejecting pixels. Thus a stack of pixels that is averaged will have fewer values than the total nu…
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Hi, First the fact that the shadow was corrected...but the smudge and other stuff was not corrected is indicating your optics are changing (the smudge and dust) So, something got onto your green filter... after you took your data (if I understand t…
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Bernard, I would like to explain what the problem is so that people understand the underlying issue.When TL (or anyone) makes master FITs from 16-bit integer images and saves them as 32-bit float images- this is not a normalized data format like Pix…
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Hi Anders: This is the video you need if you want to correct the values in the FITS headers:https://www.adamblockstudios.com/articles/batch-fits-header-editor-script Alternatively, you can load the files using the CUSTOM button in WBPP and specify t…
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Ah yes... this is a photometry tool (e.g. measuring FLUX). Requires linear. Basically any tool that measures stuff... basically needs a linear image. -the Blockhead
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Hi Roger, 1. You will need to look at the official forum for the details of the MARS data.2. MARS data is certainly corrected by some method...but as far as we are concerned the MARS data/references are considered free of gradients- and the differen…
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Yep...that will be an issue.... -the Blockhead
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Yeah, unfortunately this isn't a service like YouTube. My videos are physically hosted on Amazon servers- but they are just simply streamed to viewers.There are no other mechanisms behind the scenes. (Basically I am not really a streaming service li…