Prajwel Joseph

YouTube video by IIA Bengaluru UVIT@10: IIA celebrates 10 years of UltraViolet Imaging Telescope on board AstroSat (4 Dec 2025)

Indian Institute of Astrophysics (IIA) celebrates 10 years of UltraViolet Imaging Telescope (UVIT) on board AstroSat

Do listen to the talk by Prof. Shyam Tandon, the programme manager of UVIT.

www.youtube.com/watch?v=DpLx...

A rare case of large AstroSat pointing drift captured in UVIT visible channel images

UVIT VIS channel captures images every second, used for telescope pointing drift correction. This movie, created from ~600 VIS channel images, highlights a particularly severe but rare case.

The new PRADAN AstroSat archive now hosts over 100 Level2 UVIT datasets, with many more to be added soon. Explore UVIT imaging data processed with the latest UVIT Level2 pipeline (version 7.0.2).

The figure shown is Figure 1 from the article on UVIT Data Release Version 7.

UVIT data release version 7 is now available on ISRO’s PRADAN AstroSat archive!

Archive: pradan.issdc.gov.in
UVIT Level2 pipeline version 7 article: arxiv.org/abs/2504.00982
UVIT Level2 pipeline GitHub repository: github.com/prajwel/UVPipe

AstroSat UVIT view of the WLM galaxy

There are three images. The first one is at nearly the original UVIT imaging resolution. The second has a slightly degraded resolution but reveals fainter features more clearly. The last one was more of an intentional experiment.

Blue: FUV
Yellow: NUV

AstroSat UVIT view of NGC 3718

This false-colour image of the galaxy NGC 3718 combines data from the UVIT onboard AstroSat. The FUV channel is shown in blue, while the NUV channel is shown in yellow.

The History of Astrometry The history of astrometry, the branch of astronomy dealing with the positions of celestial objects, is a lengthy and complex chronicle, having its origins in the earliest records of astronomical obser...

I'm deeply interested in how ideas in astronomy and physics have developed over time, which is what initially drew me to this article. It turned out to be an excellent read! Only towards the end did I realise who the author is and the significant contributions he made to astrometry.

ARTSonomy!

Bringing arts and astronomy together at the Indian Institute of Astrophysics, Bangalore.

#astronomy #arts #IIAPBangalore #bengaluru #bangalore #nationalscienceday

Had a wonderful time interacting with students about UVIT, sharing its capabilities and the exciting science it enables! Thanks to Vainu Bappu Observatory for the pictures.

I am happy to see my package (Aafitrans) usage statistics picking up. But who is using it!? 🧐🤔

AstroSat UVIT image gallery: https://www.flickr.com/photos/iiabengaluru/ @IIABengaluru

I'm forced to look at the destruction
Sometimes creation
They appear far, in a different time The intrigued blind steal my visions
I hear there are others like me
Their visions are taken too I'll soon die
someone else with better eyes
will be forced to take my place

Remember to give credit where it’s due! Each publication is a testament to the countless hours spent on software development and data generation. Let’s acknowledge these efforts by citing the software and data we use. #OpenScience #astronomy

AstroSat UVIT observation of SN 2023ixf! #AstroSat #UVIT #SN2023ixf

This AstroSat UVIT image showcases the exquisite beauty and grandeur of the Pinwheel Galaxy, revealing its graceful spiral structure and countless shimmering stars. Note: Created using publicly available UVIT observations from 2016. No supernova 🥲!

I'm thrilled to announce the publication of a new paper on astroSat/UVIT, which I had the opportunity to co-author. Our paper showcases a stunning image of NGC 5291. Peer-reviewed article: https://t.co/HmbPkem0M3 See: https://t.co/fPwyf5Mwkf

News for #AstroSat #UVIT users! The latest version of Curvit (1.6.1) introduces a new curve_orbitwise() function, perfect for studying the long-term variability of sources. Get the most out of your UVIT data using Curvit. Visit: https://t.co/ODuCI1MDfr #python #astronomy

Version 2: A simple @manim_community animation to show how AstroSat UVIT observes the sky in photon counting mode. If you are interested, the source code is at https://github.com/prajwel/manim_stuff

A simple @manim_community animation to show how AstroSat UVIT observes the sky in photon counting mode. source: https://github.com/prajwel/manim_stuff/blob/main/UVIT_photon_counting_mode_animation.py

Astrosat/UVIT image of Cygnus loop

Gazing into the celestial realm, the cosmic eye peers deep into the heart of the Helix nebula, its ultraviolet vision piercing the veil of gas and dust to reveal the brilliant, burning heart of this stellar nursery. Captured by the astro-photographic prowess of the AstroSat ...

AstroSat UVIT image of Helix Nebula Created by co-adding Helix nebula's publicly available UVIT data using Curvit (https://curvit.readthedocs.io/en/latest/api/combine_events_lists.html, threshold=8, NUM_NEAREST_NEIGHBORS=8, MIN_MATCHES_FRACTION=0.01). FUV channel in blue and NUV in yellow.

ChatGPT's take on dark matter in astrophysics 😁. #darkmatter

NGC 3603 is interesting. In this image created from HST data, there are different stages of the matter cycle in the Universe visible. #astronomy #Hubble

AP PHOTOS: Backbreaking work for kids in Afghan brick kilns KABUL, Afghanistan (AP) — Nabila works 10 hours or more a day, doing the heavy, dirty labor of packing mud into molds and hauling wheelbarrows full of bricks.

Heartbreaking
https://apnews.com/article/afghanistan-education-economy-kabul-aa352195f277a6d40a0f25f15601f693 https://x.com/ChrisMegerian/status/1572943511250694144

We studied the effect of Active Galactic Nucleus (AGN) on star formation in the galaxy NGC 3982 using GALEX, MaNGA, and VLASS data in a new article (Accepted in A&A). The manuscript (check out the interactive figure inside!): https://arxiv.org/abs/2209.04914 @sdssurveys @plotlygraphs

Colour composite images made from UVIT and JWST imaging of Stephan’s Quintet https://prajwel.github.io/stephans_quintet/

A giant galaxy with arms and legs grabbing small galaxies toward it, digital art #dalle

Got a DALL·E account!

A Thread on our MNRAS accepted paper "UVIT view of Centaurus A; a detailed study on positive AGN feedback". Manuscript at https://arxiv.org/abs/2208.10209