Comet C/2025 T1 (ATLAS)
Taken by Mieczyslaw Leszek Paradowski on November 19, 2025 @
Lublin, Poland
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
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Details:
Comet C/2025 T1 (ATLAS) on 19 November 2025 at 17:09 UT.
Details on the photo.
Measured total brightness in V band is mV=9.01 +/-0.02 mag @Dia=3.0' using aperture photometry performed in IRIS.
Determined effective nuclear diameter of the comet is Dn=3.5 +/-0.5 km using the method I published in Monthly Notices of the Royal Astronomical Society, Volume 492, Issue 3, March 2020 Pages 4175-4188, https://doi.org/10.1093/mnras/stz3597
The above photo is a composition of 2 photos stacked on stars and comet 25 calibrated frames (darks, bias and flats) exposured 30s each, using DeepSkyStacker, IRIS and GIMP.
Photographer's website:
No URL provided.
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