HAT-P-61b exoplanet transit observation

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HAT-P-61b exoplanet transit observation. The observed values differ quite a lot from the catalog values: the duration of the transit was 85 min (vs. 100 min) and the dimming was 17.3 mmag (vs. 10.4 mmag). The focus was done poorly and maybe the choice of reference stars was not quite right. This object has been observed in Taurus Hill Observatory before last April, of course even then the dimming was greater than predicted, 21.9 mmag.

HAT-P-61b exoplanet transit observation. Light curve credit TRESCA ETD.