Revisiting the Heart and Soul in Narrowband from Pier 14
By old_eyes on Monday, 21 August 2023
Posted in Latest Images
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Two-panel mosaic of Heart and Soul (Jobs 2256 and 2257).

Approximately 1.25 hrs Ha, 3 hrs O3 and 2.5 hrs S2 for each panel in 300 sec subs.

Image processed in PIxinsight and cropped and downscaled from the original.

I had a troublesome colour gradient I could not seem to fix so some of the faintest detail is lost, but still pretty pleased with it.

Despite using the pedestal method to stop flat overcorrection, I was still left with a troublesome gradient I could not get rid of. AS a result of the fainter detail is missing, but I still think it works OK.

old_eyes
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9 months ago
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Despite using the pedestal method to stop flat overcorrection, I was still left with a troublesome gradient I could not get rid of. AS a result of the fainter detail is missing, but I still think it works OK.

nice work on that....you can also add a value in Pixel math Just use this    $T+0.1   and apply it to your master flat that will sort it out....you can play around with the value a little if you are still getting an over correction...its such a small value that DBE will also do a great job on it

 

petershah
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9 months ago
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Thanks Peter. I will give that a go. I added an initial small pedestal as an absolute count in the ImageCalibration step of creating the master flats.

old_eyes
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8 months ago
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