• my 3rd visit in Izaña Observatory on 2012, September
• my 4th visit in Izaña Observatory on 2014, September 26
• my 5th visit in Izaña Observatory on 2015, October 8
• my 6th visit in Izaña Observatory on 2016, November 3
• my 7th visit in Izaña Observatory on 2017, September 12
• my 8th visit in Izaña Observatory on 2019, May 30
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