APP is not analyzing stars  

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Molecular Cloud Customer
Joined:1 week  ago
Posts: 3
November 11, 2017 00:10  

APP is not analyzing stars so I cannot register my data. I am using a DSLR camera. I must be missing a step or something. Anyone else have this problem?

 


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Galaxy Admin
Joined:7 months  ago
Posts: 805
November 11, 2017 00:37  

Hi bdmccarver,

In version 1.055, I adjusted some details regarding how stars are detected from the data. This was needed, especially for very high quality data with lots of nebulosity.

In 4) analyse stars, you have the detect above noise kappa setting. Can you please check what happens if you lower the kappa value?

The default value is 80, which in some cases seems to be much too high. So lower it to a value of 20-40, then APP should really start to detect stars.

Let me know if this helps and solves your issue.

Kind regards,

Mabula

 

Main developer of Astro Pixel Processor and owner of Aries Productions


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Molecular Cloud Customer
Joined:1 week  ago
Posts: 3
November 11, 2017 01:14  

I had to go down to 10 before it worked. Thank you for your help and quick response!

 


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Galaxy Admin
Joined:7 months  ago
Posts: 805
November 11, 2017 01:26  

Hi bdmccarver,

Thank you for your feedback. 10 is quite low indeed. I am happy it works now.

Can you share the specifics of your data? Like camera, iso/gain, exposure time and OTA + focal length? That will be very valuable for me to know.

I am thinking of adjusting this kappa setting to a more automated setting that will just work for all sorts of data. But it will complicate quality comparison between the frames, so I need to give it more thought.

Kind regards,

Mabula

Main developer of Astro Pixel Processor and owner of Aries Productions


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Molecular Cloud Customer
Joined:1 week  ago
Posts: 3
November 11, 2017 23:56  

I am using a modified Canon T3i, ISO 1600, William Optics ZS71ED with .8 focal reducer, fl of 335mm. My exposure time is 2.5 minutes.


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Galaxy Admin
Joined:7 months  ago
Posts: 805
November 13, 2017 12:07  

Hi bdmccarver, thank you for the details. That helps 😉

Mabula

Main developer of Astro Pixel Processor and owner of Aries Productions


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