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UPDATE FROM MABULA

I have had a very rough 2 months unfortunately health wise. I was struck 3x in a row with bacterial infections. The second infection occurred  after a routine hospital checkup and I became very sick. I had to rest and take a lot of antibiotics. Once I was recovering and restarting work 1 month ago, I again became sick. The infection was not yet gone, so even more antibiotics and rest was needed. Needless to say, it took a lot of my energy and I needed a lot of rest.

 

Finally, the infection is really gone and my energy is coming back step-by-step now and I have started work again. I am terribly sorry to have kept you waiting for support. I will address all outstanding questions and e-mails step-by step and will be on the forum daily from today.

 

APP 2.0.0-beta47 will come soon as well, a lot of work was already completed before I became very ill, so the release is also nearly ready for you. Beta47 will be much faster actually. Many workflows will be more than 2x faster, mosaics can even be 10x faster than before because registration really received a major boost... all compared to beta46.  Before I release it, I will make sure that everything is working properly and then I will release it.

Best way to integrate different exposures and gains

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(@lanties)
Red Giant
Joined: 9 years ago
Posts: 42
Topic starter  

I have about 20 hours of Ha on Orion (M42) All the same camera (ASI-1600MM-C) and focal length but with different exposure times and different gain settings. The idea behind this is to try and produce a High Dynamic Range (HDR)  image by blending the different images.

What I have are:-

  • 15 Second Subs at Gain 75/15
  • 180 Second Subs at Gain 75/15
  • 180 Second Subs at Gain 139/21
  • 9000 Second (15M) Subs at Gain 75/15 ( This was an accident when SGPRO changed seconds to minutes for some strange reason) Stack looks pretty good

 

My questions are:

  1. Is this the wrong approach. 
  2. If not what would be the best way to stack all this data to achieve the best HDR results

 

Thank you for your help


This topic was modified 8 years ago 2 times by lanties

   
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(@schurig)
Neutron Star
Joined: 9 years ago
Posts: 71
 

Hi,

I am not sure if APP can combine all integrations to a HD image. I would try it like this.

Combine all 15sec subs to a master light, also each 180sec subs (I don't think that there is much difference between the 75Gain ans 139Gain subs), and finally the 15min subs to a master light.

You could then try to integrate those 3 masters to single master light (average, no outlier rejection, equal weights). Then try to set the developments sliders (e.g. the HL) in order to reveal the inner parts of the nebula. But as I said I don't know if APP can handle this as desired.

I personally would do the HD Combine in Photoshop.

Stephan



   
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