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Gary Palmer

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Gary Palmer
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  • Mike,Have you seen the conversation posting I left on the PI Forum? I violated Croman's dictum today with tolerable results, and I have previously followed it with less good results, so I will have to experiment some more with that. Gary
    in Narrowband Color Mapper Script Comment by Gary Palmer October 2023
  • Mike, That's really good to know. Thanks. Gary
    in Narrowband Color Mapper Script Comment by Gary Palmer October 2023
  • Mike, Thanks for the comments. I will get back with examples the next time I work on one of the CEERS images. My workflow, such as it is, is pretty simple: crop the six filter images, apply NBColourMapper with background neutralization, ColorCalibra…
    in Narrowband Color Mapper Script Comment by Gary Palmer October 2023
  • Adam and Mike, I am assuming you would like some constructive feedback on NBColourMapper. The more I use it the better I like the ability to see changes on the screen as I edit swatches. But I’ve also generated a few questions. 1. I have some new …
    in Narrowband Color Mapper Script Comment by Gary Palmer October 2023
  • I tried NBCM and didn't do very well. Today, after a little more time thinking about background neutralization and color mapping, I tried it again and I like it. My experience is described at this LINK. Will NBCM become a process?
    in Narrowband Color Mapper Script Comment by Gary Palmer September 2023
  • I was reluctant to upgrade, as the upgrade was new and I worry about bugs in new software, but I did upgrade and so far all is well. Thanks for the comments.
    in Narrowband Color Mapper Script Comment by Gary Palmer September 2023
  • I'm going to try the NBCM on the JWST NIRCam and MIRI images, which use wideband and medium band IR filters. Do you forsee any problems? Gary
    in Narrowband Color Mapper Script Comment by Gary Palmer September 2023
  • Adam, I installed 16.8.9-2 and ran the updates. All is well. The NBColour Mapper is there. Thanks. Gary
    in Narrowband Color Mapper Script Comment by Gary Palmer September 2023
  • I ran the Feature Script and NB Color Mapper doesn't show up. I ran the update again and rebooted and I'm still not seeing it.
    in Narrowband Color Mapper Script Comment by Gary Palmer September 2023
  • I have 1.8.9-1 Ripley. Going to 1.8.9-2 was next on my list. I was waiting to see how it would be received, but maybe it's time. But I see that Pixinsight has just frozen up again. I don't remember any prior problems with Pixinsight freezing or cras…
    in Narrowband Color Mapper Script Comment by Gary Palmer September 2023
  • Adam,I agree. I watched that one this morning and got a lot out of it. Since then I've been trying to apply the techniques in those two videos by continuing work on CEERS Pointing #2. I will attach a few small jpegs. This pointing did not have as ma…
    in CEERS/JWST DATA Comment by Gary Palmer September 2023
  • Hi Adam, The issue is that my ignorance of how to use STF was profound. As you noticed, I didn't know how to use the zoom function, but it is a bit tricky, as you noted in the video STF and HistogramTransformation. I think the video has given me the…
    in CEERS/JWST DATA Comment by Gary Palmer September 2023
  • Here is a link where it can be downloaded. But there is nothing special about it. Any of the downloadable files at the CEERS page referenced above would serve as well.
    in CEERS/JWST DATA Comment by Gary Palmer September 2023
  • I watched the video and payed particular attention to the manipulations of the STF triangles. It was amazing to see the star jump out from such faint data. But with this data from CEERS Pointing #2, I find that whether I work with a monochrome image…
    in CEERS/JWST DATA Comment by Gary Palmer September 2023
  • I tried to find it in your list of videos, but I hadn't looked on YouTube yet. I will now.
    in CEERS/JWST DATA Comment by Gary Palmer September 2023
  • If I select truncating the out of range values, the clipping in the shadows is extreme.
    in CEERS/JWST DATA Comment by Gary Palmer September 2023
  • I anticipated this and tried  {0, 1}, {0, 65535} {0, 4.294967296000000e+09}, {-1,1}, {-65535, 65535}, .... The result for {0,1} and {-1,1} was almost identical (differed by .001 on min in Statistics) and looked identical under STF. The result for …
    in CEERS/JWST DATA Comment by Gary Palmer September 2023
  • I think it is quite possible that you are on the right track. I know when I inspect them in FITS Liberator that they show negative values. I did import the above file with Pixinsight and the max and min are evident in the screen shot that I included…
    in CEERS/JWST DATA Comment by Gary Palmer August 2023
  • Shawn,I have made some progress since this posting, and I have been able to produce a few good images, not great, but OK. But there are problems, so I am going to start a new thread tonight. The combination you asked about in this thread is easily s…
    in JWST Data Comment by Gary Palmer August 2023
  • I hope you get a good answer to this. I had the same problem, but I also found that sometimes I didn't get any color after combining filters. I would like to know exactly how one takes gray scale images from JWST and combines them into an appropriat…
    in JWST Data Comment by Gary Palmer September 2022