Please vote for the event(s) you’re most interested in.
Cliquez sur les noms des événements ci-dessus pour en savoir plus ou téléchargez tous les détails ici.
Veuillez voter pour les événements qui vous intéressent le plus :
New Astrophysical Transient Alert: TCP J19522056+0929231
We invite all amateur astronomers to participate in the follow-up observations of this exciting new transient event. For more details, including visibility and coordinates, please visit the Astro-COLIBRI platform: TCP J19522056+0929231
Alerte Nouvel Événement Transitoire Astrophysique : TCP J19522056+0929231
Nous invitons tous les astronomes amateurs à participer aux observations de suivi de ce nouvel événement transitoire passionnant. Pour plus de détails, y compris la visibilité et les coordonnées, veuillez visiter la plateforme Astro-COLIBRI : TCP J19522056+0929231
New Astrophysical Transient Alert: AT 2025acft
We invite all amateur astronomers to participate in the follow-up observations of this exciting new transient event. For more details, including visibility and coordinates, please visit the Astro-COLIBRI platform: AT 2025acft
Alerte Nouvel Événement Transitoire Astrophysique : AT 2025acft
Nous invitons tous les astronomes amateurs à participer aux observations de suivi de ce nouvel événement transitoire passionnant. Pour plus de détails, y compris la visibilité et les coordonnées, veuillez visiter la plateforme Astro-COLIBRI : AT 2025acft
Information provided by Lukasz Wyrzykowski:
There is a bright and potentially interesting microlensing event found in Cygnus constellation: BHTOM | Login
My prediction is that it will peak within next month, at about 14 mag in red bands, so it should be easily accessible by most of the telescopes.
Very high cadence (at least couple of times a night, ideally every 1-10 minutes) observations within next 2-3 months in multiple bands (gri/BVRI, minimally in g+r+i or V+R+I), could reveal some potential planetary anomaly if we are lucky. Or help constrain the mass of the lens and identify a black hole if lensing.
Please make sure you have good quality flatfield images applied to your data. Also, make sure the exposure time is long enough to obtain enough signal to noise for our target as well as stars within the field of view (ideally down to V~18 mag).
Please upload your observations to BHTOM as soon as possible so we can trace the evolution of the event and react quickly if there is an anomaly.
Clear skies!
Lukasz
on behalf of the BHTOM Team