Comments: Many details visible for a 10.8-inch arc image.Susus Meridiani and Sinus Sanaeus stand out in the foreground in this photo.Hellas easily visible at 4 am but seemingly without much frost frozen losing its characteristic white color. Syrtis Major heading toward the center of the disk and south polar cap visible. What I thought at the beginning being an edge ring artifact actually is a dark region or prolongation of Ismenius Lacus that is situated exactly on the upper left edge. Resize 200% by first testing a Pierro Astro ADC. https://www.astrobin.com/344214/0/?nc=user

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Observation 1
Feature(s)	N/A
Filter(s)	N/A
Date	2018-04-28 09:19:00
Julian day	2458236.8881944446
System I	181.0°
System II	N/A
System III	N/A
Illumination	88.0%
Phase angle	40.29999923706055°
Solar longitude	22.3°
Eq. diameter	10.76″
Derotation	0.0 min