The BHTom 2 system is designed to facilitate collaborative astronomical observing projects, enabling users to manage target lists, request observations, and process resulting data efficiently.
Click here for BHTOM2 API documentation. Click here for BHTOM2 instalation documentation.
We strongly recommend running BHTOM2 using Docker to streamline the setup process and ensure a consistent and simplified experience. Docker eliminates many potential configuration issues, making it easier to get started quickly and focus on using BHTOM2 without worrying about environment-specific dependencies.
Note: the documentation is still in preparation.
In the meantime, you can listen to a recording on the BHTOM2 presentation by Lukasz Wyrzykowski from Malta 2023 workshop
Please contact us if you plan to use the data in a publication. By downloading the data from BHTOM you agree to follow our data policy and to use this acknowledgment:
The data was obtained via [BHTOM](https://bhtom.space), which has received funding from the European Union's Horizon 2020 research and innovation program under grant agreement No. 101004719 (OPTICON-RadioNet Pilot).
For more information about acknowledgement and data policy contact us and visit https://about.bhtom.space
Brokers in BHTOM search for time-series archival data in photometric (and soon also radio and spectra) archives providing publicly available data. We access the data either via API's provided by each service, or we access copies of archives stored in the Whole Sky Data Base (WSDB), maintained at the Institute of Cambridge, UK, by Sergey Koposov.
Webpage: https://gsaweb.ast.cam.ac.uk/alerts
Oficial Gaia DR3 data release. Limited to selected sources only.
ALLWISE is an archival MID-IR WISE data, while NEOWISE is a new on-going scanning mission, providing data every 6 months for targets from all-over the sky
Read directly from Caltech archive, contain neary 10-year long time-series for most of the sky (North and South) except the Galactic Plane. Observations were taken in a broad-band clear filter we call CRTS (CL)
From WSDB.
Problem: only mean epoch JD is stored in that table. Returns flux in miliJanskys (ReducedDatumUnit.MILLIJANSKY). Filter name: FIRST(Flux 1.4GHz)
ZTF data is read from most recent Data Release and ANTARES broker (newest data).
Reads WSDB archive, DR14 is read, typically 1 observation per filter per epoch, but for targets from e.g. Stripe82 there are way more epochs.
WSDB is read for typically single epochs in multiple bands.
Uses WSDB. About 10 years-long timeseries in a clear filter we call LINEAR(CL).
Old service, Cambridge Photometric Calibration Server, now used only as a repository of old observations prior to BHTOM2.
We use ASASSN SkyPatrol to query the lightcurves at given coordinates. The ASASSN id is first searched for within 7 arcsec around the Ra,Dec, and the light curve (g and V band photometric observations) are aqcuired from http://asas-sn.ifa.hawaii.edu/skypatrol/objects/{asassn_id}. Additionally, we search for ASASSN transients by parsing this page https://www.astronomy.ohio-state.edu/asassn/transients.html
The data from this Survey orignate from ATLAS Webpage: https://fallingstar-data.com/forcedphot/. For a new target created, the request is sent to this service. It typically takes up to 15 minutes for the request on the entire ATLAS time-span to be generated. The data are then automatically loaded to the target. Then, an automated process is taking care to keep ATLAS light curve up-to-date, with refresh time of 12h. Note, we download magnitudes which include reference flux (if available).
ATLAS data is automatically cleaned from extreme outliers (scipy.stats.z_score>10) as well as limited to 5>mag>22, including negative magnitudes (limits), which are not currently stored nor showed.
Cite: Tonry et al. (2018), Smith et al. (2020), Heinze et al. (2018), Shingles et al. (2021).
https://astro-colibri.com/ is a web service providing a current and archival list of multi-messenger transients from surveys like Einstein Probe, Virgo-LIGO-Kagra, Swift, Fermi, etc. Every BHTOM target is searched for AstroCOLIBRI target to within 0.1 deg. The alias name is provided in Target Detail which is also a link to their webpage for this transient.