In fact the filter you are › Forums › Uranus › Uranus in opposition on October 24, 2018 › In fact the filter you are 17 June 2018 at 6:43 pm #579613 MaksymowiczParticipant In fact the filter you are using covers all the methane rays, 619nm, 750nm+/- and above. Can you think possible to perform on the 619nm only or the 750nm only (the filter needs to be found)? Stanislas
