Released #dftk version 0.7.19: https://dftk.org/releases with support for #hubbard corrections (#DFT+U) and various #gpu-related #performance improvements.

#densityfunctionaltheory #condensedmatter #dfpt #response #physics #simulation #planewave

I managed to get a few shots of NGC7293, The Helix Nebula on 10/16. This is usually pretty low on my horizon so it's difficult to capture. Well worth the effort though...The first shot is natural color, the second and third are Hubble Palette and Foraxx Palette narrowband images. Thanks for looking. Ps8:3-4

#lightbucketastro #astrophotograpy #nebula #helixnebula #planewave

I had an opportunity to shoot IC5146 The Cocoon Nebula, and The area around the star cluster NGC6883 over the last couple nights. Attached are the results. One pic of the cocoon nebula, and then several views of NGC6883 in narrowband palettes and natural color. Enjoy!

Rom1:20
#lightbucketastro #nebula #planewave #astrophotography

Last night was clear and no moon, which makes for some good pictures. Attached are three shots of Sh2-171 / CED214. The first is in visible light, the second and third are narrowband images with different color palettes.

Ps8:3-4
#lightbucketastro #astrophotography #nebula #planewave

New preprint: https://arxiv.org/abs/2509.07785

We present an implementation of AD-DFPT, a unification of #automaticdifferentiation with classical #dfpt response techniques for #densityfunctionaltheory (#dft). We demonstrate its use for #property predition, #uncertainty propagation, design of new #materials as well as the #machinelearning of new #dft models.

#condensedmatter #planewave #response #physics #simulation #computation

I had a couple more opportunities to snap a few pictures. Included here are SH2-155 The Cave Nebula, and a well-known favorite for this time of year M-16 The Eagle Nebula made famous by the Hubble Telescope's shots of it, and particularly the area in the center called The Pillars of Creation. These shot include natural light, plus a couple alternative color palettes to show varying details.

Ps 8:3

#astrophotography #telescope #planewave #lightbucketastro #nebula

I have some new pics for you! Over the past couple weeks I've managed to open the observatory roof to clear skies. With a good collection of targets, I got behind on processing. Nonetheless, here they are - IC5070 The Pelican Nebula, and The Cygnus Wall in NGC7000

#Lightbucketastro #nebula #astrophotography #planewave

A few more of my recent shots taken over the week of July 20th - including some lesser-photographed objects.

NGC6995 (eastern veil nebula), IC5068 (forsaken nebula), and SH2-132 (lion nebula).

I'm still working out some of the kinks in the new setup, but it's starting to come together! #planewave #astrophotography #nebula #lightbucketastro

It's been a while since I was able to get out in clear skies. I've been working on getting my new scope setup, but in the meantime, I was able to get some shots of the Sh2-108 and NGC6910 areas in the constellation Cygnus. What a beautiful area of the sky!
#planewave #lightbucketastro #astronomy #nebula

As part of the #cecam workshop on perspectives of the atomistic simulation environment (#ase) I delivered a talk on our #materials #modeling ecosystem juliamolsim.org written in the #julialang
programming language and showed some examples: #automaticdifferentiation through the simulation pipeline, seamless #gpu usage, #error propagation and many more

Slides: https://michael-herbst.com/talks/2025.06.23_ASE_perspectives.pdf
#julialang demo: https://michael-herbst.com/talks/2025.06.23_ASE_perspectives_demo.tar.gz

#dftk #densityfunctionaltheory #condensedmatter #planewave #simulation

Released #dftk version 0.7.14: https://dftk.org/releases with another round of #performance improvements for #nvidia GPUs as well as a faster algorithm for response calculations based on our recent #preprint http://arxiv.org/abs/2505.02319.

#densityfunctionaltheory #condensedmatter #dfpt #response #physics #simulation #planewave

New publication https://doi.org/10.1103/PhysRevB.111.205143

New algorithm for the #inverseproblem of Kohn-Sham #densityfunctionaltheory (#dft), i.e. to find the #potential from the #density.

Outcome of a fun collaboration of @herbst with the group of Andre Laestadius at #oslomet to derive first mathematical error bounds for this problem

#condensedmatter #planewave #numericalanalysis #convexanalysis #dftk

New preprint from our team: https://arxiv.org/abs/2409.04372

A new algorithm for computing #material properties in #densityfunctionaltheory (#dft) based on inexact #krylov methods: we safe 40% computational cost by an adaptive selection of convergence tolerances inspired from #mathematical analysis.

#condensedmatter #planewave #dfpt #response #physics #simulation #computation

I got a partially clear night on wednesday so I rolled off the roof and took a few shots of M81 before the clouds came in. This is a stack of 20x60sec shots. Not bad given only 20min of total time.
#lightbucketastro #galaxy #astrophotography #planewave

Winter hasn't been great for me to snap pictures. Between the brutally cold, cloudy weather and re-configuring some of my setup, it just didn't happen much. However, on 3/9 I managed to do a quick capture and process M42 - The Great Orion Nebula before it disappears for the summer. This shot is a stack of 40x60sec exposures. Shot using my TSO130 scope with a ZWO2600MC camera. Enjoy -

Ps 8:3-4

#lightbucketastro #nebula #planewave #astronomy

I had another clear night of taking pictures on 8/22. This time I focused on NGC6960. Here's the shots from two different systems, the first one is a wider field of view, and the second set is more zoomed in.
#astrophotography #nebula #lightbucketastro #planewave #skyshedpod

I captured this on the night of 7/27. It's NGC6888, The Crescent Nebula. Taken with RASA11 scope on Planewave mount, with ZWO6200 mono camera. Total of 160x30sec photos over approx 2hrs. with/without stars...enjoy
Psalm 8:3-4
#astrophotography #nebula #planewave #skyshedpod

Waxing Gibbous Moon. 2024/02/18 22:37:13 UTC.
Showing Ptolemaeus, Alphonsus, Arzachel then Thebit & Thebit A. Then Purbach, Regiomortanus & Walther. iTelescope t18 AstroCamp at Nerpio, Spain - MPC Code - I89. Telescope: Planewave 12" CDK Aperture:12.5"
Corrected Dall-Kirkham Astrograph Focal Length: 1683 mm. F/Ratio: f/5.3
CCD: QHY600M-PH-US Mono CMOS Sensor. South is Up. West is Left.#MoonHour #planewave #LunarPhase #lunar

C/2021 S3 (PanSTARRS) 2024-01-28 04:01:25 UTC.
t73 Deep Sky Chile at Rio Hurtado Valley, Chile - MPC TX07. Telescope: Planewave CDK 14" Aperture: 14". Focal Length: 2563mm. F/Ratio: F7.2. CCD: ZWO ASI2600MM Pro Mono CMOS Sensor. South is Up. West is Left. #panstaars #Planewave #comets

Waning Gibbous Moon. 2024/01/28 13:22:24 UTC.
Le Gentil B, Casatus E & Newton D Circled.
iTelescope t30 Deep Space - Siding Spring Observatory Australia - MPC Q62
Telescope: Planewave 20" (0.51m) CDK Astrograph. Aperture: 508mm.
Focal Length: 2262 mm. F/Ratio: f/4. CCD: FLI-PL6303E
South is Up. West is Left. #Planewave #MoonHour