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Woodbine
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- Woodbine
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I have an OSC and a dual band Ha OIII filter. I am still learning how best to use them, especially post-processing. My thoughts so far; firstly I think that an important limitation is that the Bayer filters are not very selective, so the Ha “bleeds”…
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In case this helps someone, I was able to solve this by using a Frankenstein mash up of the rejection and substitution techniques. The GAME rejection method didn't work on my data because I had too many bad frames (they occurred after a meridian fl…
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The thought has occurred that I may be seeing this because I have a high percentage of bad frames, probably a little over 50%. So that will really mess up any statistical algorithm that relies on a somewhat normal distribution. My median value will …
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No, I used used GESD following the tutorial, I’ll try winsorized sigma clipping and report back. Still - why aren’t the zero value pixels being rejected? Shouldn’t the rejection be independent (additional to) whatever rejection algorithm is in play…
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Hmm - I've tried this and must be doing something wrong, but can't see what; I have low range rejection selected and low range set to zero. However, the integration isn't rejecting the zero value pixels inside the GAME ellipse. When I look at the pi…
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Hi Adam, Absolutely - more than happy to spread the word. I'm working on calibrating and integrating the troublesome dataset now (smarter people than me pointed out that the light is coming from Deneb, not very far away from the scattered light on …
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I just jumped to the Pixel substitution link and the thumbnail looks exactly like what my Pelican Nebula frame looks like after a meridian flip. At least I know what I'm dealing with now and will watch and absorb the lesson. What a brilliant resourc…
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Thanks Adam, I am rewatching the entire WBPP lessons again as I begin to appreciate the importance of really understanding this step in the process. I’m now trying to get my head around the weighting process and whether/when adding a lower quality…
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Now I have my cooled camera up and running, I took a look at the difference between 20 x 3 min exposures and 3 x 30 min exposures for dark frames. The result was interesting and surprising to me and I thought I'd share. The shots below are what I t…
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Hi Adam, Thank you so much for taking the time to answer my question so thoroughly and carefully. I think I understand the video more clearly now. Also, sincere thanks for creating this course and sharing your knowledge. I am quite new to Astrophot…