[Grahame (Grahame)]

Hi Guys,

Tonight I have removed and washed the primary mirror from my 10" GSO dob. Upon Finishing I took a closer look and saw "speckles" on the surface (have a look at the attached image) the droplets you see are a mixture of 70% isopropyl alcohol and 30% ethanol for quick drying and displacing water.

Is it "normal" for a coated mirror to look like this - or should the coating be more like the standard household mirror in which you cannot see these specks?

Grahame.