Liverpool-Maidanak monitoring of QSO 2237+0305 in 2006–2019.
|Band||Total frames||Selected frames (a)||Epochs/nights||⟨Tframe⟩ (b) (s)||⟨Tnight⟩ (c) (s)||FWHM(d) (″)|
|g||277||260||203||253||318||1.54 ± 0.16|
|V||731||695||180||290||1124||1.26 ± 0.14|
|r||366||328||253||200||255||1.46 ± 0.15|
|R||2295||2192||445||260||1290||1.25 ± 0.15|
|I||705||678||179||200||758||1.17 ± 0.13|
Number of individual frames after removing those with relatively poor quality. The removed frames produce anomalous photometric results and account for 4–10% of the total in each optical band.
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