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2022-05-29: APP 2.0.0-beta2 has been released !

Release notes

Download links per platform:

windows 2.0.0-beta2

macOS x86_64 2.0.0-beta2

macOS arm64 M1 2.0.0-beta2

Linux DEB 2.0.0-beta2

Linux RPM 2.0.0-beta2

Have to click on overy frame

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(@hubert-hautecler)
White Dwarf Customer
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Topic starter  

I have 71 frames of comet C_19 L3. When I do the comet registration I have to click on every frame to click on the nucleus.  Is this normal?


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(@hubert-hautecler)
White Dwarf Customer
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Topic starter  

Sometimes it skips 1 frame and then I have to click again. Is this because it's a faint comet? 


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(@vincent-mod)
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Joined: 5 years ago
Posts: 4850
 

No, it does that when it can't really detect the nucleus properly. Is it very faint or amongst a lot of stars? Are you using the latest APP version?

If so, we'd love to have the dataset, just so we can test better algorithms for your data as well.


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(@hubert-hautecler)
White Dwarf Customer
Joined: 5 years ago
Posts: 19
Topic starter  

Hi Vincent, it's near a star, so maybe that's the problem and yes it's faint. I have to confirm almost every frame.  See my pasted image. I will load up the dataset but how do I have to do this?

 

image

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(@vincent-mod)
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(@hubert-hautecler)
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Topic starter  

I'm still processing them and will load them up when I'm finished. 


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(@hubert-hautecler)
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There are uploaded.


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(@vincent-mod)
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Excellent, thanks Hubert! We will work with your and other data which proves more difficult.


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(@hubert-hautecler)
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Topic starter  

Vincent, this is the final registration. It worked fine. Can you tell me from this streched image of this is due vignetting or light pollution? I use flatframes.

image

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(@vincent-mod)
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Kind of looks like vignetting, are you sure the flat frames are correct and applied as well? I'll have a look at the data as well, so can probably tell. Light pollution is also possible, but you'd have a lot then indeed. The LP tool should work pretty well on it.


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(@hubert-hautecler)
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@vincent-mod 👍 


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(@vincent-mod)
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Loading in the lights I noticed in the FITS header that the mosaic type could be different to what is reported. Which is kind of odd to me. I changed it manually to RGGB and that looks better, otherwise the blue channel was more pronounced which didn't make much sense to me.


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(@vincent-mod)
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Applying the masterflat, it does work but seems to over-correct a bit, I think the flats could be better in that case.


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(@vincent-mod)
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It indeed does involve a few manual actions, but it also processes quite a few automatically. I think the data is somewhat on the borderline of what the algorithm can nicely detect. Nonetheless, always perfect for trying to optimize it.


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(@vincent-mod)
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So yes, the flats do have an issue. Not all dust spots are removed and it's over-correcting. This usually is the case with either a bias or dark not being correct or an issue in the flats.


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(@hubert-hautecler)
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Topic starter  
Posted by: @vincent-mod

Loading in the lights I noticed in the FITS header that the mosaic type could be different to what is reported. Which is kind of odd to me. I changed it manually to RGGB and that looks better, otherwise the blue channel was more pronounced which didn't make much sense to me.

I use Sharpcap Pro and in Sharpcap I can click on Inverted. Sharpcap suggest that this is for APP. Is reverse the bayer. Is that what you are saying?

image

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(@hubert-hautecler)
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Posts: 19
Topic starter  

What do you suggest I do to get correct flats? Bias and darks are from last month.


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(@vincent-mod)
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Posted by: @hubert-hautecler
Posted by: @vincent-mod

Loading in the lights I noticed in the FITS header that the mosaic type could be different to what is reported. Which is kind of odd to me. I changed it manually to RGGB and that looks better, otherwise the blue channel was more pronounced which didn't make much sense to me.

I use Sharpcap Pro and in Sharpcap I can click on Inverted. Sharpcap suggest that this is for APP. Is reverse the bayer. Is that what you are saying?

image

Ah how interesting, never seen that before. When I loaded in your data, the standard pattern as reported in the fits header is used and that was showing GBRG. Which I overruled manually to RGGB in tab 0. I guess the setting in Sharpcap will do that then.

 


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(@vincent-mod)
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Posts: 4850
 
Posted by: @hubert-hautecler

What do you suggest I do to get correct flats? Bias and darks are from last month.

That depends on how exactly you're taking them. What procedure do you follow exactly and what program do you use to capture it. How are you taking proper bias and darks..

 


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(@hubert-hautecler)
White Dwarf Customer
Joined: 5 years ago
Posts: 19
Topic starter  
Posted by: @vincent-mod
Posted by: @hubert-hautecler
Posted by: @vincent-mod

Loading in the lights I noticed in the FITS header that the mosaic type could be different to what is reported. Which is kind of odd to me. I changed it manually to RGGB and that looks better, otherwise the blue channel was more pronounced which didn't make much sense to me.

I use Sharpcap Pro and in Sharpcap I can click on Inverted. Sharpcap suggest that this is for APP. Is reverse the bayer. Is that what you are saying?

image

Ah how interesting, never seen that before. When I loaded in your data, the standard pattern as reported in the fits header is used and that was showing GBRG. Which I overruled manually to RGGB in tab 0. I guess the setting in Sharpcap will do that then.

 

I will set the values back to normal. 


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