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19 June 2021: Our upload server https://upload.astropixelprocessor.com/ has been migrated successfully to our new office with higher upload and download speeds (nearly 10MByte/sec up/down ) ! We now have 1 general upload user called: upload with password: upload. The users upload1 - upload5 have been disabled.

31 May 2021: APP 1.083-beta2 has been released ! APP 1.083 stable will follow soon afterwards. It includes a completely new Star Reducer Tool, New File Saver Module, Improved Comet registration and much more, check the release notes here!

DOWNLOADS are available HERE!

 

Problems selcting the nucleus if a comet  

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 Wolf
(@airwolf599)
Hydrogen Atom Customer
Joined: 2 years ago
Posts: 1
September 20, 2021 13:39  

Hi,

 

I have problems during comet processing to select the nucleus of comet C/2017 K2 (PANSTARRS) I captured last night. When clicking on the nucleus the cross is jumping to the next star.  Is there a way to adjust the sensitivity of the process? I'm using Version 1.083-beta2.

See attached screenshot

 

Best

 

Wolf

APP comet

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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3861
September 22, 2021 13:01  

Mmm, looking at the amount of noise it might be that APP is not able to detect a proper nucleus amongst it. We did notify Mabula as well.


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(@mabula-admin)
Universe Admin
Joined: 5 years ago
Posts: 2729
September 29, 2021 16:45  

Hi Wolf @airwolf599,

Can you upload your comet data so I can test it?

Please upload it here: https://upload.astropixelprocessor.com/

username and password: upload

Please make a folder with your name and let me know once uploaded then I will test it a.s.a.p. 😉

Mabula

 

 


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(@chris-fi)
Hydrogen Atom Customer
Joined: 2 years ago
Posts: 1
October 11, 2021 09:53  

@mabula-admin hello, is there a solution for this problem or a work around? I have the same issue. But only with some frames. 


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3861
October 11, 2021 10:19  

Not for this specific issue as it needs extra programming to hopefully get that to work on tricky data. If you upload your data of the frames that fail, Mabula can test on that.

I made a folder on our server called "comet-id-problems" in which you can put the frames.

Go to https://upload.astropixelprocessor.com and for the username and password, use: upload


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(@geertvdbulcke)
Brown Dwarf Customer
Joined: 4 years ago
Posts: 9
October 18, 2021 11:20  

I used the 1.083-beta2 to test this comet mode.  The comet is 67P and the images were guided on the stars with subs of 120s (because JPL changed its Horizons interface and I could not activate comet tracking).  The comet nucleus showed as a short trail.  During the APP registration process I had to re-click on the comet a few times and sometimes APP selected a point just next to the comet trail.  But in the end the result was acceptable.  I have uploaded these files for APP testing.

Maybe it would be better if the user would be able to click on the nucleus in each image instead of letting APP trying to do this in the image sequence? (MaximDL works in this manner, the user clicks on the nucleus in each image, the program selects the brightest part at this position).


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3861
October 18, 2021 14:08  

Thanks Geert, yes that may be interesting to include, however I think the algorithm should be able to distinguish this unless the nucleus is very faint. Thanks for uploading, I'll pass this on to Mabula!


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(@mabula-admin)
Universe Admin
Joined: 5 years ago
Posts: 2729
October 21, 2021 21:26  

Hi Geert @geertvdbulcke,

I have tested your 67P data in the current code for the stable 1.083 release and all works well. Since the comet is not guided well, you still need to select the comet in some of the frames, but each time the comet nucleus is detected properly, also when you click not directly on the comet.

The current code has been further refined and improved from the 1.083-beta2 code for the comet nucleus detection.

Comet detected properly in all frames
Comet detected properly in all frames 2

Mabula


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(@geertvdbulcke)
Brown Dwarf Customer
Joined: 4 years ago
Posts: 9
October 23, 2021 10:11  

Thanks Mabula.  When I ran the image set, on one of the images the crosshair did not center on the comet but just below and to the right of it.  But the result afterwards looked OK.

 

Geert


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3861
October 24, 2021 13:47  

Understood, but the above is beta 3, not released just yet. 😉 So it's fixed.


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(@mabula-admin)
Universe Admin
Joined: 5 years ago
Posts: 2729
October 28, 2021 12:39  
Posted by: @geertvdbulcke

Thanks Mabula.  When I ran the image set, on one of the images the crosshair did not center on the comet but just below and to the right of it.  But the result afterwards looked OK.

 

Geert

Hi Geert @geertvdbulcke,

Yes I understood, but now in the current code the crosshair works correctly on all the frames 😉 as well.

Mabula

 


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