step pattern in int...
 
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2022-05-29: APP 2.0.0-beta2 has been released !

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step pattern in integrated immage


(@ofergol)
White Dwarf Customer
Joined: 2 years ago
Posts: 25
Topic starter  

In my integrated image of the horsehead nebula, I notice steps pattern on the right side (attached).

The integration included two sessions (60s and 120s).

A meridian flip was done during the 120s session.

I suspect the the pattern is somehow related to a problem in normalization.

Help with the issue will be much appreciated.

Thanks

Ofer

IC434 3

 


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(@vincent-mod)
Quasar Admin
Joined: 5 years ago
Posts: 4919
 

Mmm, I guess so, but the image doesn't look right either. It shouldn't be so dark nor over-saturated. Was this done to show the stepping? Could you describe what you do for calibration, your procedure, software used etc?


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(@ofergol)
White Dwarf Customer
Joined: 2 years ago
Posts: 25
Topic starter  

Sorry. the image was processed to highlight the stepping.

now I see that the stepping happened when I rotated the image in APP.

I attach the non-processed image and the rotated one.

IC434 session 1 session 2 crop  90degCW 1.0x LZ3 NS St
IC434 session 1 session 2 crop St

 


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(@vincent-mod)
Quasar Admin
Joined: 5 years ago
Posts: 4919
 

Oh interesting, I'll ask Mabula if that would make sense, thanks for showing!


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