NGC 7789, Caroline's Rose, was described by Caroline Herschel in 1783.It is a very beautiful open star cluster formed by a thousand stars in the constellation of Cassiopeia, not far from Caph. Its particularity is to present an aspect of rose petals, drawn not only by chains of stars but also by dark corridors. It appears much richer visually because no photography is able to restore the rose as it can be perceived at the eyepiece.
16" Dobson, eyepiece observation with Ethos 13mm and EAA with SiOnyx Aurora NV camera in afocal mount behind a 9mm Nagler eyepiece, good conditions of seeing and average transparency. Drawing on black Canson with dry and wax pastel pencils. Quercy region, South France, september 16, 2020. Digital formating.