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robertdzudzar.bsky.social
Robert
@robertdzudzar.bsky.social
2.1K followers 3.9K following 180 posts
📡 Astrophysicist 📈 Data Person
🎨 Hobby SciArt Illustrator & Writer
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Robert @robertdzudzar.bsky.social · Jan 15
Something for #PortfolioDay... I mostly do space #SciArt. Here is my digital drawing of the Rosette Nebula, a large star-forming region which is about 5000 light-years away. 🔭
Upper left quadrant of my procreate drawing of the Rosette Nebula, a large star-forming region. Image depicts giant molecular cloud, and stars. Upper right quadrant of my procreate drawing of the Rosette Nebula, a large star-forming region. Image depicts giant molecular cloud, and stars. Bottom left quadrant of my procreate drawing of the Rosette Nebula, a large star-forming region. Image depicts giant molecular cloud, and stars. Bottom right quadrant of my procreate drawing of the Rosette Nebula, a large star-forming region. Image depicts giant molecular cloud, and stars.
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Work in progress. Few sessions done, more sessions to go. Painting of the Butterfly Nebula, a bipolar planetary nebula, acrylic on canvas 30x40cm
#painting #acrylics #SciArt #acryliconcanvas #ArtYear #Art #nebula
Mini canvas of a nebula painting next to larger blank black canvas. Black canvas with Butterfly nebula outlined with colored graphite First session of acrylic painting. Large portions of (blue, white, red, yellow) butterfly nebula are painted on black canvas. Second acrylic later of colours added to Butterfly nebula. Painting is slowly starting to have better shape and brighter colours.
November 12, 2025 at 6:04 AM
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Started playing around with Acrylics. Here is my painting of the Butterfly Nebula, a bipolar planetary nebula.
* acrylic on canvas (13x18cm) *in preparation to paint it on 30x40cm ☺️
#SciArt #Astronomy #Acrylic #AcrylicPainting #ArtYear #Nebula
Small acrylic painting of the Butterfly Nebula, a bipolar planetary nebula. From dusty centre are emerging two sides of space clouds and dust, spreading like butterfly wings.
October 19, 2025 at 5:45 AM
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Atomic Hydrogen content in and around M81 galaxy, painted with thick watercolour on paper.

#SciArt #ArtYear #Watercolour #AtomicHydrogen #Astronomy #Galaxy
Atomic Hydrogen content in and around M81 galaxy, painted with thick watercolour on paper with thick short dashed brushstrokes.
October 18, 2025 at 4:17 AM
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Jupiter's Great Red Spot, painted with thick watercolour on paper.

#Spacetober #SciArt #Watercolour #ArtYear #Jupiter
Jupiter's Great Red Spot, painted with thick watercolour on paper with thick short dashed brushstrokes. Storm swirling towards centre (yellow, brown, red) with chaotic surroundings.
October 3, 2025 at 11:58 PM
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Polar lights above mountains, painted with thick watercolour on paper.

Continuing thread with Van Gogh inspiration.
#SciArt #Astronomy #Watercolor #ArtYear #PolarLight #Aurora
Polar lights above mountains, painted with thick watercolour on paper with thick short dashed brushstrokes. Light to dark green and red stripes are spreading across the sky.
September 28, 2025 at 1:33 AM
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Sunrise at Denhams beach, NSW Australia. Painted with thick watercolour on paper.
#art #ArtYear #watercolor #Australia #sunrise #Blueskyart
Sunrise painted with thick watercolour on paper with thick short dashed brushstrokes swirling around. View of sandy beach, blue water, and red to orange to yellow to blue sky colour transition.
September 20, 2025 at 2:39 AM
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The Pleiades, open star cluster. Inspired by The Starry Night, and painted with watercolor on paper.

#SciArt #Astronomy #Watercolor #ArtYear
The Pleiades, open star cluster, painted with thick watercolour on paper. Style is inspired by The Starry Night - thick short dashed brushstrokes twirling around. Bright white stars with a dash of yellow; surrounding is dominated with bright blue colour which fades outward to black.
August 31, 2025 at 2:06 AM
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Digital drawing of a neutron star. Happy #NeutronStarWeek!
🐡🔭 #SciArt #Astronomy
Digital drawing in Procreate of a neutron star. Lines looping around the star show its strong magnetic field, while beams of radiation are being blasted out into space from north and south pole.
August 16, 2025 at 11:27 PM
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Tomorrow Mercury becomes closest planet to Earth and remains closest until 31st July 2026. I drawn Solar System bodies in Procreate. Distances can be explored in my Streamlit App: solar-system-distances.streamlit.app ps. there will be days in 2027 when Mars is the closest planet to Earth #SciArt 🧪 🔭
Screenshot of Streamlit web application "Distances in Solar System". Seeing distances from Earth to the Moon, Venus, Mercury, Sun and Mars for 28th June, and then below it for 29th June when Mercury becomes closest planet to the Earth, and remains closest for the rest of this year. Solar System bodies are illustrated in Procreate. Streamlit App: https://solar-system-distances.streamlit.app
June 28, 2025 at 12:08 AM
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Not sure what I was expecting as an outcome, but here is a version of our Moon, it's a sort of topographic paper cutout digital drawing #SciArt #Astronomy #Moon #ArtYear 🐡 🔭
Topographic map of the Moon in a paper cutout style, made in Procreate. On image one can see a layers of squiggly surfaces overlayed on top of each other where colour varies from black to white, giving indication of depth. Drawing is based of topographic image of the Moon (data Lunar Orbiter Laser Altimeter, author M.A. Wieczorek, original topographic map source is Wikipedia).
June 5, 2025 at 10:24 AM
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10 months & 20 astronomy written & illustrated pages later, I completed my first publishing cycle. Written in Panonian Rusyn & illustrated in Procreate for "Заградка"; 10 monthly publications. Here are examples of my 2 favourite sketch-to-page comparisons. #SciArt #kidlitart #kidlit #Astronomy 🔭 🐡 🧪
Comparison of sketch-to-page of a Astronomy article. Showing constellations visible in September on the northern hemisphere, focusing on area around milky way. Written in Panonian Rusyn, illustrated in Procreate. Comparison of sketch-to-page of a Astronomy article. Showing face on and edge on Milky Way galaxy. Enhanced spiral structure and marked our location. Written in Panonian Rusyn, illustrated in Procreate.
May 18, 2025 at 5:21 AM
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First Moon painting with watercolor on paper.

#SciArt #Moon #watercolor #ArtYear #Blueskyart #Art
Painting of Moon woth watercolor on paper, highlighting bright craters and dark seas. Watercolor on paper.
April 14, 2025 at 9:08 AM
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Painted another sunrise at Denhams beach, NSW, Australia; but this time watercolor on paper. Enjoyed playing with this one, and still need to practice mixing yellow and blue to avoid green sky 😀
#watercolor #art #ArtYear #Australia #sunrise
Watercolor on paper painting of a sunrise at the beach.
April 12, 2025 at 7:11 AM
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Digital watercolor painting of a sunrise at Denhams beach, NSW Australia.
#watercolor #procreate #ArtYear #Australia #art
Digital painting of a sunrise at the beach.
April 11, 2025 at 2:08 PM
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Digital drawing of the evolution of our Sun. Showing current state, red giant, and planetary nebula. Afterwards Sun is going to remain a white dwarf and cool down. (Sizes are approximate, not up to proper scale). #SciArt 🔭
Illustration of the evolution of our Sun, from current state, through red giant, and planetary nebula, after which Sun is going to remain a white dwarf and cool down. (Not up to scale). Digital drawing in Procreate.
April 4, 2025 at 5:18 AM
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Each day during March I spent about 15min to paint a sunset. All done with #watercolor: first half of the month I used brush&paper, which I haven't used since high-school. Second half of the month I used digital brushes and #Procreate. Here are top 4 digital that I like the most. #blueskyart #art
Digital painting of sunset over the hills, done with watercolor brushes in procreate. Digital painting of sunset, done with watercolor brushes in procreate. Digital painting of sunset over the trees, with a snowy sky, done with watercolor brushes in procreate. Digital painting of sunset, done with watercolor brushes in procreate.
April 2, 2025 at 1:39 AM
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Each day during March I spent about 15min to paint a sunset. All done with #watercolor: first half of the month I used brush&paper, which I haven't used since high-school. Second half of the month I used digital brushes and Procreate. Here are top 4 on paper that I like the most. #blueskyart #art
Watercolor painting of sunset over the mountains. Watercolor painting of sunset over the ocean. Watercolor painting of sunset. Watercolor painting of sunset.
April 2, 2025 at 1:37 AM
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Venus's surface drawn in procreate. Drawing is based on the radar image of Venus's surface which is originally mapped by Magellan spacecraft #SciArt 🔭
Digital drawing of Venus, in procreate. Image is based on the radar image of Venus's surface, which is originally mapped by Magellan spacecraft. On the drawing, one can notice bright red color, and lots of volcanic and highlands regions.
April 1, 2025 at 10:45 AM
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My first fan art attempt #daredevil #mattmurdock #fanart
My first fan art attempt #daredevil #mattmurdock. Pencil drawing in Procreate. Highlighting Matt Murdock and a Daredevil mask above him.
March 10, 2025 at 1:03 AM
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Playing with data: Renzogram of atomic hydrogen (HI) in galaxy NGC 4424 (contours) overlaid on SDSS color composite image. HI is moving: blue parts towards us, red away from us. HI tail probably makes it a Jellyfish type of galaxy. #radioastronomy #SciArt #science #python Refereces in Alt text.
Renzogram of atomic hydrogen (HI) in galaxy NGC 4424 (contours) overlaid on SDSS color composite image. We can see that HI extends way beyond the visible galaxy as a tail (resembling a jellyfish). References: * HI and SDSS data are from VIVA survey (VLA Imaging of Virgo in Atomic Gas) by http://www.astro.yale.edu/viva/ * Plot made with Python code * Image beautified with Procreate
March 7, 2025 at 9:41 AM
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Initial release of my "Color Extractor" #Streamlit app, was February 27th 2022.
- The apps logo and colormap example were clearly set in support of Ukraine.
- App allows you to create and extract individual swatches and then use them in #Procreate
- App: color-extractor.streamlit.app
Screenshot of Color Extractor Streamlit App - highlighting create colormap page with blue & yellow color, which is the color of Ukrainian flag.
March 1, 2025 at 2:42 AM
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For day 22 of #FebruARTy themed #Divide: here is my digital drawing of Ring Nebula. This nebula was created when central star ejected its outer layers into space. It has three distinct regions: the central cavity, the bright shell and the halo. #SciArt #Astronomy
My digital drawing in Procreate of Ring Nebula. This nebula was created when central star ejected its outer layers into space. Its three distinct regions: the central cavity, the bright shell and the halo (Wesson et al. 2023). On average,central blue colour is from Helium (HeII), green colour is from Oxygen [OIII], and red colour in shells is from Nitrogen [NII] (O'Dell et al. 2009).
February 23, 2025 at 1:13 AM
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It's been a year since SciStreams had a trial run. SciStreams was my attempt to expand my hobbies in which I would make a random science Streamlit App. Three #Streamlit apps were published and then the project went into a slumber. Perhaps there is interest to wake it up #Astronomy #Science Examples👇
Screenshot: Summary of 3 Streamlit Apps that were published a year ago, presenting Python package 'Maskfill', ECLE Galaxies and a dataset of Open Clusters.
February 15, 2025 at 12:01 AM
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For day 1 of #FebruARTy themed #BlueSkyArtShow: I created a mini web application in Streamlit. App shows distances, for a selected day, between bodies in Solar System. Art part of the App -> used illustrations are my digital drawings.
App: solar-system-distances.streamlit.app
#SciArt #Astronomy
Screenshot of Streamlit web application "Distances in Solar System". Application allows one to select a date, and reference body, and then see a table and illustrated order of distances to other bodies in Solar System. App can be accessed here: App: https://solar-system-distances.streamlit.app
February 1, 2025 at 12:03 AM
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Here is my #Space #SciArt digital drawing of the Dolphin Head Nebula (Sh2-308): blown by fast winds from a central Wolf-Rayet star. It's based on real #Astronomy images.
Upper left quadrant of Procreate digital drawing of the Dolphin Head Nebula (Sh2-308). It's a space bubble which shape resembles dolphins head. Upper reght quadrant of Procreate digital drawing of the Dolphin Head Nebula (Sh2-308). It's a space bubble which shape resembles dolphins head. Bottom left quadrant of Procreate digital drawing of the Dolphin Head Nebula (Sh2-308). It's a space bubble which shape resembles dolphins head. Bottom right quadrant of Procreate digital drawing of the Dolphin Head Nebula (Sh2-308). It's a space bubble which shape resembles dolphins head.
January 25, 2025 at 1:22 AM