Note:

Photometric analysis performed with 1 comparison star and 2 check stars.
Binning: 1x1 (1.15 arcsec/pixel)
Filter: Rc
Meridian flip: none, sessions tarted altready flipped. 
Moon: 30% illuminated at 63 degrees, set at 23:05.
Sky: clear; seeing 4/5. 
Defocus: defocused, initial FWHM ~ 9 arcsec. 
--- Weather conditions ---
Int: temp inside the observatory dome (read on focuser sensor)
Ext: temp, humidity, pressure read from a weather station 2 km South of the observatory, at lower altitude and out of the town boundaries:
http://www.associazionemeteosenese.it/siena4/wxindex.php
      TEMP°C
Hour  Int  Ext H% Pres(hPa)
19:00 11.8 6.5 72 1025
20:00 10.9 4.6 78 1026 
21:00 10.0 3.6 83 1026 
23:20  7.3 1.4 88 1026 
00:05  6.9 0.9 89 1026 
00:40  6.3 0.4 89 1027 

Transits déterminés

• 2460739.42166 (04/03/2025, 22:07)
  Désignation de la planète: TOI-2154 b
  HJD_mid: 2460739.42222 +/- 0.00177
  Correction héliocentrique: 0.00056
  Profondeur de transit (Mag): 0.00767 +/- 0.00085
  Durée du transit (Min): 137.05 +/- 7.89
  Écart-type (mmag): 1.8
  Index de qualité des données: 3
  Densité des données (data/min): 0.28
  Algorithme d’ajustement: ETD original
  Note:

  Photometric analysis performed with 1 comparison star and 2 check stars.
  Binning: 1x1 (1.15 arcsec/pixel)
  Filter: Rc
  Meridian flip: none, sessions tarted altready flipped. 
  Moon: 30% illuminated at 63 degrees, set at 23:05.
  Sky: clear; seeing 4/5. 
  Defocus: defocused, initial FWHM ~ 9 arcsec. 
  --- Weather conditions ---
  Int: temp inside the observatory dome (read on focuser sensor)
  Ext: temp, humidity, pressure read from a weather station 2 km South of the observatory, at lower altitude and out of the town boundaries:
  http://www.associazionemeteosenese.it/siena4/wxindex.php
        TEMP°C
  Hour  Int  Ext H% Pres(hPa)
  19:00 11.8 6.5 72 1025
  20:00 10.9 4.6 78 1026 
  21:00 10.0 3.6 83 1026 
  23:20  7.3 1.4 88 1026 
  00:05  6.9 0.9 89 1026 
  00:40  6.3 0.4 89 1027

  Aperçu du diagramme TTV:
• 2460739.42211 (04/03/2025, 22:07)
  Désignation de la planète: TOI-2154 b
  HJD_mid: 2460739.42267 +/- 0.00166
  Correction héliocentrique: 0.00056
  Profondeur de transit (Mag): 0.00959 +/- 0.00062
  Durée du transit (Min): 154.96 +/- 7.16
  Écart-type (mmag): 1.87
  Index de qualité des données: 3
  Densité des données (data/min): 0.28
  Algorithme d’ajustement: ETD original
  Note:

  Photometric analysis performed with 1 comparison star and 2 check stars.
  Binning: 1x1 (1.15 arcsec/pixel)
  Filter: Rc
  Meridian flip: none, sessions tarted altready flipped. 
  Moon: 30% illuminated at 63 degrees, set at 23:05.
  Sky: clear; seeing 4/5. 
  Defocus: defocused, initial FWHM ~ 9 arcsec. 
  --- Weather conditions ---
  Int: temp inside the observatory dome (read on focuser sensor)
  Ext: temp, humidity, pressure read from a weather station 2 km South of the observatory, at lower altitude and out of the town boundaries:
  http://www.associazionemeteosenese.it/siena4/wxindex.php
        TEMP°C
  Hour  Int  Ext H% Pres(hPa)
  19:00 11.8 6.5 72 1025
  20:00 10.9 4.6 78 1026 
  21:00 10.0 3.6 83 1026 
  23:20  7.3 1.4 88 1026 
  00:05  6.9 0.9 89 1026 
  00:40  6.3 0.4 89 1027

  Aperçu du diagramme TTV: