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(@ippiu)
Main Sequence Star Customer
Joined: 1 year ago
Posts: 42
March 25, 2020 14:39  

Hi mates @mabula-admin  and @vincent-mod

Neutralized background in tool 5) is usually checked by default.

Annotazione 2020 03 25 143459

Even if i usually do a complete and precise "remove light pollution", that includes remove background, do i have to leave it checked or unchecked ((in 5) Normalize)?

Thanks

Andrea


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 1746
March 27, 2020 10:52  

Hi Andrea,

You can leave it checked, but calibrating the background later on (tools menu) is important as it might supress nebulosity a bit in the background if you don't do that.


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(@ippiu)
Main Sequence Star Customer
Joined: 1 year ago
Posts: 42
March 27, 2020 11:00  
Posted by: @vincent-mod

 it might supress nebulosity

Does bold red "it" refer to background calibration in 5) Normalize?

Is background normalization in tools menù already applied? Remove light pollution tool included background normalization, right?


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(@ippiu)
Main Sequence Star Customer
Joined: 1 year ago
Posts: 42
March 28, 2020 09:37  

To sum up:

Immagine

What's your advice? @mabula-admin @vincent-mod


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 1746
March 28, 2020 09:50  

You're doing it right yes, IT meant "neutralize background" in the normalize tab, 5. Because that might (might) lower the amount of signal in the background a little bit, "calibrate background" later on is adviced to always do as well.


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(@ippiu)
Main Sequence Star Customer
Joined: 1 year ago
Posts: 42
March 28, 2020 09:52  

Thanks @vincent-mod.

So between all 3 background calibrations, i usually skip the 3rd one, because it is included in the 2nd one: right?


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 1746
March 28, 2020 10:10  

No, that is a different proces from removing the light pollution tool.


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(@ippiu)
Main Sequence Star Customer
Joined: 1 year ago
Posts: 42
March 28, 2020 10:26  

@vincent-mod

So i understand that is better to apply all 3 background calibrations in order, always.. right?


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 1746
March 28, 2020 11:32  

Adviced yes, though you might skip 1 if you have a lot of very faint nebulosity in the background and already very nice data from dark skies for instance.


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