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Messages - hvb356

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1
Mike,

my proposal in a very short form:

0. Generate a good starmask, take MaskGen.js

1. Apply little convolution to the mask

2. Subtract continuum (R) from Halpha with CS.js

(use the mask)

this will create the emission line image Ie

3. Add the emission line image to the R-channel with PixelMath

$T + Ie * f * ~mask

Start with f = 1, modify, if necessary

4. Continue with AdvSharpening.js, Morph... Etc.

Scripts are available here

http://www.skypixels.at/pixinsight_scripts.html

Regards

Hartmut

2
Tutorials and Processing Examples / Re: MaskGen script
« on: 2019 July 04 00:11:51 »
Hi Steve,

I've found this topic a few minutes ago.

As Andres wrote, the astrometry was "re-invented" with the latest updates of PixInsight. The new methods exposed with ImageWindow object are today, what I was looking for since long. Thanks to Andres and the team.

In some cases, distortion can be a problem. When you see star centers not matching the mask, tweek your ImageSolver with higher magnitudes (i.e 14..17). This takes more time but should give you better results.

If you have doubts on non-masked stars, please verify the positions with Simbad and send me the coordinates.

Regards

Hartmut

3
General / Re: MaskGen
« on: 2019 June 21 14:43:33 »
 Sorry, this kind of errors is beyond my scope. I do not want to rule out that the error lies in the method getPixels, which could be replaced by getSamples. Before doing so, I will try to find out the difference.

4
General / Re: MaskGen
« on: 2019 June 19 23:42:51 »
Thanks all for comments on my latest work and thank you Juan for your invitation. I followed the link and joined GitLab. At next, I need some further guidance there.

Hartmut


5
General / MaskGen
« on: 2019 June 17 23:59:01 »
Visitors of Herbert's wonderful www.skypixels.at know my new mask generator MaskGen. This tool needs an astrometric distortion corrected solution. One can create masks with variable diameter for stars up to mag 21.

Hartmut

Sent from my HUAWEI P20

6
Wish List / Re: Decompression of fz-files
« on: 2019 May 18 10:51:06 »

7
New Scripts and Modules / Re: Pattern subtraction scripts
« on: 2019 May 06 06:05:04 »
Hola Vicent,

welcome to the club.

Hartmut

8
General / Re: PPMX layout
« on: 2019 May 06 05:29:03 »
Hi Andres,

Thanks so much

Hartmut

9
General / PPMX layout
« on: 2019 May 06 03:58:59 »
Hi,

who can help me to find the document about the PPMX catalog?

Thanks in advance

Hartmut

10
Thanks Rob for pointing me to line 217. The corrected script is ready for download from https://www.skypixels.at/pixinsight_scripts.html and from my repository.

Regards

Hartmut

11
New Scripts and Modules / GAME 1.4.2
« on: 2019 March 04 06:06:45 »
Hi Gamer,

GAME updated to version 1.4.2 with a new output option: Gradient Edge Mask. This is a contribution developed by Ken Meyfroodt.

Thank you Ken

Hartmut

Please see https://www.skypixels.at/pixinsight_scripts.html

12
Wish List / Re: WebView
« on: 2019 February 15 21:52:41 »
Hi Juan,

I understand.
For my latest script I looked for a workaround. I convert my pdf into a collection of jpeg images, put them into a file and display each with a Frame control. Works excellent.

Thank you

Hartmut

13
Wish List / WebView
« on: 2019 February 13 10:35:01 »
Hi,

WebView works nice with HTML content. When I try to load a pdf, nothing happens. No view, no error.
Is there a trick to convince this control to act like a browser?

Thank you

Hartmut

14
Wish List / Re: SIP
« on: 2019 January 09 10:27:00 »
Hello Andres,

thanks for your fast answer.
Well, can you provide me a good document, which describes the math? The transformation from image coordinates to celestial coorninates is not the problem. The follow up correction with the splines (*.csv) is currently out of my focus.

Best regards

Hartmut

15
Wish List / SIP
« on: 2019 January 09 08:39:07 »
Dear,

on my wishlist is the storage of the SIP (Simple Imaging Polynomial) polynoms in the FITS header after plate solving.

Thank you

Hartmut

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