8 replies to this topic

[Dorin Fetche]

Good morning,

 

I have imaged Cosmic Horseshoe a gravitational lensed system. located at 5.628 Billion ly away (foreground galaxy) and 18.884 Billion ly (lensed galaxy), but I had problems with SPCC. used a mono camera, the combined RGB frame is localised by the ImageSolver, but when applying Spectrophotometric colour calibration, I get this error. Any idea on how to solve it? 

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[R Botero]

Are you running SPCC on a stretched image? It may be your PSF settings if so. 
 

Roberto

[Dorin Fetche]

Are you running SPCC on a stretched image? It may be your PSF settings if so. 
 

Roberto

No. It was the next step after RGB combination. It was able to Image Solve. It is only the colour calibration. 

[R Botero]

There's reduced coverage for some parts of the sky.  What are the coordinates for this target?

[Dorin Fetche]

There's reduced coverage for some parts of the sky.  What are the coordinates for this target?

Right ascension 11h 48m 33.1s Declination 19° 30′ 03″. You can find it in image solver if you type cosmic horseshoe

[R Botero]

Yes, very strange.  I just generated a FoV with those coordinates (Catalog Star Generator) in PixInsight, solved it and applied SPCC to it:

 

 

It works just fine detecting the coordinates.  Obviously my image is just a grayscale converted to RGB and there's not fitting possible but it had no issue finding close to 500 stars to compare.

 

Maybe post to the PixInsight forum also?

[Dorin Fetche]

Yes, very strange.  I just generated a FoV with those coordinates (Catalog Star Generator) in PixInsight, solved it and applied SPCC to it:

 

TestSPCC.jpg

 

It works just fine detecting the coordinates.  Obviously my image is just a grayscale converted to RGB and there's not fitting possible but it had no issue finding close to 500 stars to compare.

 

Maybe post to the PixInsight forum also?

I have posted there as well. I am just waiting for some advice. Thank you anyway for that, it is encouraging. 

[Dorin Fetche]

Yes, very strange.  I just generated a FoV with those coordinates (Catalog Star Generator) in PixInsight, solved it and applied SPCC to it:

 

TestSPCC.jpg

 

It works just fine detecting the coordinates.  Obviously my image is just a grayscale converted to RGB and there's not fitting possible but it had no issue finding close to 500 stars to compare.

 

Maybe post to the PixInsight forum also?

I received a reply on PI forums. The area my frame covers is not covered by DR3/SP. Here is the link to the image, let's see if you can apply SPCC to it. 

https://drive.google...?usp=drive_link

[R Botero]

I suspected that but was surprised the simulated field generated no errors. You'll have to wait for a few more GAIA rotations!