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Topics - OldSkyEyes

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Does Pixinsght use AVX2?

Does it make a big speed difference?


Is it possible to define an area to be analyzed instead of the full frame?
If not it's maybe possible to misuse the weight formula to select an area?
On the other hand maybe not that hard to edit the script to crop the frames before 'Measure'.

I would like to have some of these nice statistics for a certain area in the image.

edit: nevermind, I found the 'Region of interest' in the version from the process menu.
edit2: see below

New Scripts and Modules / Debug Environment for Scripts?
« on: 2019 January 28 10:50:34 »
How do you debug your script, just full run and then hope the error will guide you???

For small script try and error is ok but for large scripts I need to be able to set a breakpoint or something to see what is going on.

General / PI Marketing material? 30min. presentation in club
« on: 2019 January 06 02:57:04 »

In our astronomy club there are not many users of PI and I was asked to give a more or less sales presentation of PI "Try to convince us to buy PI"
Unfortunately I don't have any experience with alternatives, since I did choose to start with PI.

Does there exist some PowerPoint or other document I can use?
Instead of having to make it all myself. (The FAQ is a bit helpful)
I don't have that much experience in PI and I would probably miss some important points.

So I'm looking for a collection of 'all' reasons compared to alternatives, not just a few examples.


Off-topic / Many Threads Windows bug?....
« on: 2019 January 03 13:46:42 »
Someone with a threadripper or epyc PC running Windows may want to read this:

Would be interesting to know if this also have an influence on PI CPU performance.

General / Making a distortion model for 18mm DSRL lens, Error?
« on: 2018 August 01 05:06:01 »

I'm trying to make a distortion model for my DSRL camera lens since the imagesolver never can't figure out the stars no matter how I try to point it in the right direction.
So I assume with a distortion model generated by the manual image solver it would work much better.

But generating the model always gives me an singular matrix error, see picture.
"Error: SurfaceSplineGenerateD(): Low-level API function error (0x0049): Singular matrix"
Am I doing something wrong or does the program not work right?

My Swap benchmark score dropped about 25%  :(

Anyone else seeing the same thing?

Anyone got a good image during the total solar eclipse with stars on it?
To repeat the experiment they did in 1919 to prove bending starlight.
Maybe not visible but present in your image data. (it doesn't need to be bright only the location is important)

You would need a very high angular resolution though, like 0.5 arcseconds/pixel or better. (chance to detect range 0.3 to 1.75 arcseconds.)
But in reach of armature equipment.

I assume pixinsight can help with these measurements?

Since .NET Core 2.0 is made to be a multi platform library and that is important for PixInsight I was wondering this could become a second library to build core modules on besides C++ ?

Since C++ is a bit trickier than C#
(more people can program C# just like there are more people able to program JavaScript than C++)

My plan was to image solve this picture and add labels.
(as an exercise to learn the program)
But it always failed, no matter what I tried.

So I wanted to start from an image that was generated that would certainly work right? NO! even worse it hangs.

1) generate starts image (no problem)
2) imagesolve the generated image, starts good but then hangs, (memory usage keeps jumping between 0.9 and 2 GB)
see attached pictures to see when it hangs.

I added the 2 icon files (xpsm) so you can easily reproduce it. (PPMX.bin path will need to be updated)


Wish List / Video format .SER, frame(s) import module?
« on: 2017 April 29 01:54:18 »

Anyone working on a frame(s) import module, like .SER file, or does it already exist in some way?

This was the first thing I missed in PixInsight, you can say there are ways around it by using other programs first, but it makes sense to be part of this program, it's the same astro camera but another format.
I don't think it's a big deal to add it since what you need is already present: alignment, stacking, blink.
Maybe it should be added in the 'open file' in blink...

(new user)

edit sample code for the format:

General / 3Dplot script doesn't work?
« on: 2017 January 08 13:19:57 »

I tried this 3Dplot script with my trial version, do I have to install something more to make this work?
(I have an i7-6700 CPU/GPU on Windows 7, no extra GPU present.)


run --execute-mode=auto "C:/Program Files/PixInsight/src/scripts/3DPlot/3DPlot.js"

Processing script file: C:/Program Files/PixInsight/src/scripts/3DPlot/3DPlot.js

***** 3D Profiling Script *****

HistogramTransformation: Processing view: Image02
Processing gray channel:
Histogram transformation: done
54.963 ms
Computing 3D coordinates: 100%
Generating image output: DSC_0790_3dplot
Rendering 3D profile: 100%
Error: Graphics.end(): the graphics context is not active

General / Bias pixel value 600 of maximum 16350?
« on: 2017 January 01 04:13:15 »

Since you don't need much to make bias frames I gave it a shot, the process looks ok but the bias value (also single frame) is so high.

Maximum value overexposed is 16350.
My bias is going from 600 top right to 607 bottom left. (superbias)  Nikon D5500 14bit 1/4000s (same for ISO 2000 or ISO 100)
I was expecting something less than 10, not 600, is this normal or is there something wrong??



I'm just trying out pixinsight with a trial license. (I like the easy menu font sizing for my bad eyes.)

When I open a Nikon RAW file of my D5500 it is a lot darker.
STF Autostretch helps a bit but clearly not the same as what Nikon had in mind.
RAW/NEF looks ok in the Nikon Capture NX-D and windows viewer.

Here you find an example NEF file with JPG how it should be. (NEF 14bit)!AutrcYXPZoBZcOLcYna95qErv-4

I want to know what the real sensor value is that I can use to process further??


If I do a Fourier on this picture I see a clear difference between the jpg and the NEF, makes me think that maybe something is wrong with the raw decoding, just guessing.
(pictures to show the difference attached.)

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