Acquire
Timestamped HDF5 spectra remain the primary observational source.
Results, experiments and candidates stay separate.
ARAS keeps reproducible Galactic H I observations, experimental datasets and ongoing extragalactic searches visibly distinct. Calibration faults, null results and revised analyses remain part of the record rather than being hidden.
0reproduced results
0observed / analysis datasets
0ongoing projects
0archive entries
OBSERVATIONS
Observation library
From RF to scientific product
Flag
Warm-up intervals, hardware failures, RFI and bad channels are explicitly marked or excluded.
Calibrate
ON/OFF work is performed in linear power with pre/post or time-dependent reference regions.
Reference velocity
Spectra are placed on a common LSRK velocity frame before scientific comparison or stacking.
Repeat & challenge
Independent nights, jackknifes, broad-line tests and null-transit controls are used before stronger claims.
Publish transparently
Spectra, waterfalls, reports, animations and limitations are kept together for inspection.
Current H I system
Antenna120 cm offset dish
Fixed-pointing drift scans and repeated target crossings.
Front endSAWbird H1
Externally powered 1420 MHz LNA/filter front end.
ReceiverSDRplay RSPdx-R2
Timestamped spectral acquisition into the ARAS workflow.
SiteKadıköy · İstanbul
Approx. 40.988° N, 29.028° E.
What a status label means
Reproduced
Independent recordings support the same astronomical structure or profile.
Observed
A real observational dataset or experiment exists, but the label does not automatically imply a source-detection claim.
Ongoing
A target is still being stacked, repeated or challenged with null/control tests.