Comments: Excellent seeing. Good details around the STrD/GRS interaction area. The SPR Red Spot is approaching the meridian. Two tiny two-tone spots are on the NTB before and after the meridian.

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Observation 1
Feature(s)	GRS
Filter(s)	rgb
Date	2018-02-17 18:30:00
Julian day	2458167.2708333335
System I	38.61°
System II	247.23°
System III	90.34°
Illumination	99.0%
Phase angle	10.399999618530273°
Solar longitude	301.6°
Eq. diameter	37.59″
Derotation	9.0 min