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INDI Library v2.0.6 is Released (02 Feb 2024)

Bi-monthly release with minor bug fixes and improvements

ALS - Astro Live Stacker

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  • Thank you received: 133

So I just wanted to give it a try. Got two of the nightlies, but both segfault with a coredump because of errors parsing /etc/fonts/fonts.conf :(
woodstock:~% ./als-0.7-dev-77e1b4e.run 
Fontconfig warning: "/etc/fonts/fonts.conf", line 5: unknown element "its:rules"
Fontconfig warning: "/etc/fonts/fonts.conf", line 6: unknown element "its:translateRule"
.....
Fontconfig error: "/etc/fonts/conf.d/90-synthetic.conf", line 6: invalid attribute 'version'
Fontconfig error: Cannot load config file from /etc/fonts/fonts.conf
Fontconfig warning: FcPattern object weight does not accept value [0 205)
Segmentation fault (core dumped)
(installed is fontconfig-2.13.1-2.5.x86_64)

Then I tried to get the git version and do the venv install. But this one fails with installing the requirements, as there is no opencv-python==4.1.0.25 available.
Using (available) 4.1.2.30 instead collides with the requested numpy version. At that point, I gave up....
The following user(s) said Thank You: Frédéric CORNU
3 years 10 months ago #53415

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Hi DerPit and thanks for your report and your efforts
Would you mind telling me what system you tried ALS on ?
We'll find a fix

Thanks again
The following user(s) said Thank You: Peter Sütterlin
3 years 10 months ago #53420

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Sorry for not stating explicitly. As in the signature, this is an openSUSE Tumbleweed (rolling release, so quite recent packages of everything).
I can also open a ticket in you issue tracker, if you prefer that.
The following user(s) said Thank You: Frédéric CORNU
3 years 10 months ago #53424

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Yes, please. A ticket would be great
Thanks in advance :)
3 years 10 months ago #53425

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Some news : ALS v0.7-alpha2 is out !

Just needs a few little cleanups before an official v0.7 release.

What's new since we last spoke :
  • switchable night mode
  • switchable 'save on stop' mode
  • allow manual choice of Bayer pattern for demosaicing
  • Various eye candy and stability stuff

This was made possible by the feedback you guys gave us. This is MUCH appreciated

Test away => als-app.org/assets/releases/v0.7-alpha2/

Thanks again and clear skies to all
The following user(s) said Thank You: Steven Kleinberg
3 years 10 months ago #54382

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Hello et Bonsoi,

before ALS I used AstroToaster based on Deep Sky Stacker Enginge.

ALS is now my choice, but I miss Kappa-Sigma Clipping for an even better result / for filtering out planes, and an automated restart of stacking if slewing to a new target.

Are there any plans for that?

Greetings
Steven
3 years 2 months ago #65485

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hi and thanks for the feedback

Filtering outliers would indeed be very usefull. We'd need to check its impact on performance.
Regarding auto-restart : as ALS is not connected to the mount (and won't be in a near future) we would need to rely on repeated alignment failures to assume user slewed to a new target. Would be worth a test.

Please fee free to create feature requests as issues on ALS's repo at github.com/gehelem/als .Who knows, we might find some time or horsepower to put them into ALS

cheers

--
Fred
3 years 2 months ago #65490

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Hi there - really enjoying this program and hope it will continue to develop! I'm finding tho that I would like to apply flats to my stacked images to remove donuts etc.  Any thoughts on how I can do this prior to the file hitting the scan folder? I thought to use a script like the one below but it's not working as expected. Before I spend a ton of time and effort debugging it are there any other alternatives?

workpath="./caliwork/"
calipath="./calibrate/"
rawpath="./raw/"
scanpath="./scan/"

var = 1
while var == 1: 
  list_of_files=os.listdir(rawpath)
  if len(list_of_files) == 0:
    time.sleep(1)
  else:
    imagefile = list_of_files[0]
    print("Processing "+imagefile)

    # Move the file to the work folder
    shutil.move(rawpath+imagefile,workpath)
    imagedata = ccdproc.fits_ccddata_reader(workpath+imagefile, unit='adu')
    masterflat = ccdproc.fits_ccddata_reader(calipath+"flat.fits", unit='adu')
    imagedata = ccdproc.flat_correct(imagedata, masterflat)

    # Write out calibrated result to the ALS scanpath for stacking
    hdu = fits.PrimaryHDU(data=imagedata)
    hdu.writeto(scanpath+imagefile, overwrite=True)

 
Last edit: 2 years 11 months ago by Gord Tulloch.
2 years 11 months ago #70014

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