#aavso
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space.robozor.cz
⭐ Eclipsing binary XZ Andromedae "winks" in NASA's Astronomy Picture of the Day. The light curve was made by Ogetay Kayali with Citizen Astronomy, an open-source differential photometry tool: it identifies field stars via Gaia DR3 and VSX, fits periods and exports AAVSO-ready reports […]
Original post on space.robozor.cz
space.robozor.cz
September 24, 2026 at 12:12 PM
astroarxiv.bsky.social
Investigating the Light Curves of 5 Long Period Variable Stars: A Study Cross-Harmonics using VStar, MESA, and GYRE. G. M. Sherren et. al. https://arxiv.org/abs/2609.08065
Figure 1 AAVSO visual photometric data of L$_2$ Pup (blue) (bottom) and a select region of pulsation (top) fitted with a model accounting for the dimming event (red). Z UMa AAVSO visual photometric light curve in three select regions of earliest to latest in descending order. The light curve of V CVn displayed in three regions. The amplitude and period variability is apparent, as well as double-peaks during multiple maxima.
September 10, 2026 at 2:00 PM
cosmos4u.bsky.social
There is a new 7th magnitude nova located very conveniently in the constellation Sagitta, right next to its 3.8 mag. star Delta a.k.a. Zuoqi: www.cbat.eps.harvard.edu/iau/cbet/005... = detailled report, apps.aavso.org/webobs/resul... = observations, www.facebook.com/photo/?fbid=... = a picture.
AAVSO-generated map down to 8th mag.
August 26, 2026 at 5:17 PM
astroarxiv.bsky.social
Fourier Morphology Diagnostics of Delta Cephei MESA-RSP Light Curves. Zuhoor Elahi et. al. https://arxiv.org/abs/2608.24481
Observed Johnson \(V\)-band light curve of { Phase-aligned morphology progression for the accepted model sequence. The curves are normalized and aligned at maximum brightness, so the figure compares shape rather than absolute amplitude. The accepted synthetic curves remain much smoother and more nearly sinusoidal than the observed Johnson... Fourier morphology comparison between the observed AAVSO Johnson \(V\)-band template and the final accepted synthetic -BC \(V\)-band model with \( =0.400\) and \( =0.095\). The observed curve has much stronger harmonic content and asymmetry, while the synthetic curve remains much smoother and m... Fourier fit to the observed Johnson \(V\)-band light curve of . The fit quantifies the observed amplitude, harmonic content, and asymmetric Cepheid morphology.
August 26, 2026 at 4:46 AM
astrothad.bsky.social
🔭 Saw this release from AAVSO - mag 7.3 nova in Sagitta - N Sge 2026 - first found in outburst less than 24 hours ago. This will be an easy target (though a very crowded field) for northern hemisphere observers, and still decently high for southern hemisphere
August 25, 2026 at 9:56 PM
kdawson.tldr.nettime.org.ap.brid.gy
A second AAVSO MyNewsFlash just now, same observer, reported magnitude 4.1.
August 24, 2026 at 6:39 PM
kdawson.tldr.nettime.org.ap.brid.gy
According to an AAVSO MyNewsFlash, the Blaze Star T CrB, in Coronae Borealis, may finally have gone nova again. This single report puts it at magnitude 3.1. Between eruptions (on a roughly 80-year period) the star sits at magnitude 10.2. In previous eruptions, in 1866 and 1946, it has brightened […]
Original post on tldr.nettime.org
tldr.nettime.org
August 24, 2026 at 4:53 PM
astroarxiv.bsky.social
Time-dependent multi-energy neutrino emission from symbiotic recurrent novae: the role of accretion disks. Rui Xu et. al. https://arxiv.org/abs/2608.13814
V-band data (blue dots) and fitting curve (red solid line) of RS Oph 2021, T CrB 1946, V407 Cyg 2010 and V745 Sco 2014. Data is taken from AAVSO {https://www.aavso.org/LCGv2/ Schematic diagram of the geometric structure of a SymRN. The predicted luminosity of T CrB for MeV (black) and GeV (black) neutrinos. Estimated optical (red) and gamma-ray (green) light curves for the next outburst of T CrB. Optical data (red points) and fitting curve (solid line) of RS Oph from 4th August to 2nd September 2021. The peak of optical luminosity is about 27.6 h after the starting point of the eruption. The onset and peak time are presented with red dotted and grey dashed lines.
August 17, 2026 at 2:21 AM
newsarea.bsky.social
Liverpool Telescope Autonomously Classifies Live Nova in Taurus in Days

Liverpool Telescope nova spectrum data published today confirm Nova Tau 2026 as a classical Fe II-type nova that brightened 25,000-fold in one week, captured autonomously by a 2-metre robotic SPRAT spectrograph with zero human…
Liverpool Telescope Autonomously Classifies Live Nova in Taurus in Days
Liverpool Telescope nova spectrum data published today confirm Nova Tau 2026 as a classical Fe II-type nova that brightened 25,000-fold in one week, captured autonomously by a 2-metre robotic SPRAT spectrograph with zero human intervention -- the AAVSO now wants binocular photometry from amateur observers worldwide.
news-area.com
August 13, 2026 at 7:57 AM
mujeresconciencia.com
#HaceOchoAños Margaret W. Mayall: el cielo cambia
Un artículo de Manuel San Martín Fernández de Heredia
Margaret W. Mayall: el cielo cambia - Mujeres con ciencia
Margaret Walton Mayall. Astronomía. Annie Cannon. Margaret Hardwood. Estrella variable. Espectrometría. AAVSO.
mujeresconciencia.com
August 7, 2026 at 5:20 AM
jaanaval.bsky.social
AAVSO Observations Help Confirm Betelgeuse's Long-Suspected Companion | aavso
www.aavso.org
July 28, 2026 at 4:12 PM
filipp-romanov.bsky.social
On 2026-06-20 I remotely obtained a spectrum of T CrB using the 2-m Liverpool Telescope and submitted to the AAVSO: apps.aavso.org/avspec/obs/2...
The intensity of the Hα line appears the same as in 2024.
Previous:
apps.aavso.org/avspec/obs/1... 2024-06-20
apps.aavso.org/avspec/obs/1... 2025-07-18
July 27, 2026 at 3:10 PM
astroarxiv.bsky.social
A Reproducible AAVSO Johnson-V Fourier Template for the Prototype Cepheid Delta Cephei. Zuhoor Elahi et. al. https://arxiv.org/abs/2606.29543
Figure 1 Figure 2 Figure 3 Figure 4
July 1, 2026 at 2:32 AM
astrophsr-bot.bsky.social
Zuhoor Elahi, Wafa Gull: A Reproducible AAVSO Johnson-V Fourier Template for the Prototype Cepheid Delta Cephei https://arxiv.org/abs/2606.29543 https://arxiv.org/pdf/2606.29543 https://arxiv.org/html/2606.29543
June 30, 2026 at 6:52 AM
starcourier.bsky.social
[2606.29543] Zuhoor Elahi & Wafa Gull: A Reproducible AAVSO Johnson-V Fourier Template for the Prototype Cepheid Delta Cephei. link
June 30, 2026 at 4:51 AM
krxiv-astro-ph.bsky.social
A Reproducible AAVSO Johnson-V Fourier Template for the Prototype Cepheid Delta Cephei
https://arxiv.org/pdf/2606.29543
Zuhoor Elahi, Wafa Gull.
https://arxiv.org/abs/2606.29543
arXiv abstract link
arxiv.org
June 30, 2026 at 4:02 AM
paspjournal.bsky.social
A recent article published in @paspjournal.bsky.social presents a flare-detection and flare-frequency analysis of the active M dwarf star AD Leo using long-term, ground-based photometry provided by the American Association of Variable Star Observers (AAVSO). iopscience.iop.org/article/10.1....
Example flare detection and envelope expansion from AD Leo. From Bertollini (2026).
June 16, 2026 at 2:29 PM
glytxh.bsky.social
Starscream V2.0

Terminal instrument for AAVSO CSV sonification

It makes stars scream.

newest additions;
-can pull from AAVSO archive directly
-cute new oscilloscope
-palette options
-additional object metadata
-cleaner export
-included sample data

Play with it here

github.com/glytxh/StarS...
June 14, 2026 at 2:39 AM
heidivdv.bsky.social
Hiep hoi voor amateurs! Hier draaien de meteorencamera's en worden alle observaties van veranderlijken aan de AAVSO-database toegevoegd. You can do science, you!
May 15, 2026 at 12:26 PM
filipp-romanov.bsky.social
Supernova SN 2026kid in NGC 5907 imaged using 0.43-m iTelescope.Net T21. My photometry:

2026-05-02.19501 15.722 V
02.20261 16.939 B
02.21015 14.944 Rc
02.21924 14.152 Ic

I also observe SN 2026gzf and upload photometry to the AAVSO database.

@astrodave.bsky.social
@davidbflower.bsky.social
May 10, 2026 at 11:14 AM
arifsolmaz.bsky.social
Transform your consumer smart telescope into a robotic variable star observatory that works autonomously every clear night, contributing real science to the AAVSO astronomical database.

https://github.com/edjuh/seevar

#VariableStars #CitizenScience #RoboticAstronomy
Transform your consumer smart telescope into a robotic variable star observatory that works autonomo
March 23, 2026 at 1:01 AM
hoosierskywatcher.bsky.social
It's high time that I started the learning curve to do variable star photometry with my SeeStar S50. I need some kind of "guide for dummies." Here's an image of the galaxy M101 I took last week. #SeeStarS50 #AAVSO
Galaxy M101 imaged with my SeeStar S50 last week. 20 minute exposure with no editing.
March 16, 2026 at 5:55 AM
mrjeffknox.bsky.social
Cyrus Fernald, "Solar Transit of Unknown Object, 15 February 1964," AAVSO Abstracts, April 1963, p. 7;
Clinton D. Ford, "An Explanation of Fernald's Observation," AAVSO Abstracts, April 1963, pp. 7-8;
www.aavso.org/sites/defaul...
February 15, 2026 at 9:04 AM
mujeresconciencia.com
"Margaret W. Mayall: el cielo cambia"
Esta astrónoma nació tal día como hoy, hace 124 años
Margaret W. Mayall: el cielo cambia - Mujeres con ciencia
Margaret Walton Mayall. Astronomía. Annie Cannon. Margaret Hardwood. Estrella variable. Espectrometría. AAVSO.
mujeresconciencia.com
January 27, 2026 at 12:32 PM
shaidorsai.bsky.social
If I ever wind up with a permanent home observatory, I’m planning on doing some variable star automated observation for AAVSO. That’ll require some photometry equipment that’ll have to be maintained in calibration, so I’ll be joining him…
January 27, 2026 at 4:11 AM