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PixInsight => General => Off-topic => Topic started by: caliu on 2012 May 03 03:45:04

Title: Squared and octogonal stars, at Star Mask
Post by: caliu on 2012 May 03 03:45:04

Hi to all,
Lately a very strange thing happens with StarMask, If the "Smoothness" is low, the results stars appear squared and octogonals, only disappear this molest effect if I upping Smoothness range .I seem that something bad in my procedure, but ¿what is?

Best Regards
Ferran.

Title: Re: Squared and octogonal stars, at Star Mask
Post by: Lex on 2012 May 03 06:52:25

Hi Caliu,

for me this is normal; lowering the smoothness creates less smooth stars. Lifting it creates more uniformly shaped stars.

Correct me if I am wrong..  ???

Title: Re: Squared and octogonal stars, at Star Mask
Post by: caliu on 2012 May 03 08:31:24

Thanks Lex,
I do not think like you, I think the stars should be round, always.....wait for an answer from the experts  :-\

BR

Title: Re: Squared and octogonal stars, at Star Mask
Post by: Andres.Pozo on 2012 May 03 09:03:01

Quote from: caliu on 2012 May 03 08:31:24

Thanks Lex,
I do not think like you, I think the stars should be round, always.....wait for an answer from the experts  :-\

Could you show an example?

Title: Re: Squared and octogonal stars, at Star Mask
Post by: vicent_peris on 2012 May 03 09:05:31

This is due to the morphological filter used in the process.


V.

Title: Re: Squared and octogonal stars, at Star Mask
Post by: Lex on 2012 May 03 11:19:26

Quote

This is due to the morphological filter used in the process.

Vicent,

so this filter causes the stars to change shape from round to edgey, by in or decreasing the smoothness?

Title: Re: Squared and octogonal stars, at Star Mask
Post by: caliu on 2012 May 03 12:36:09

Quote from: Lex on 2012 May 03 11:19:26

Quote

This is due to the morphological filter used in the process.

Vicent,

so this filter causes the stars to change shape from round to edgey, by in or decreasing the smoothness?

Vicent, I don't use in this time the Morphology, the image come directly from MST:

(http://www.caliu.fotografiaastronomica.com/Star_Mask_final.jpg)