[NOT REQUIRED] Secondary mirror 8" F5

[Michael_Bibby (Michael)]

Does anyone know a good supplier for secondary mirror's for a 8" f5 Newtonian? Mine has some very subtle scratches on the surface presumably from improper cleaning, along with a few imperfection. The scratches are only really visible when the mirror is illuminated. Its probably not effecting views very much but my understanding is that the secondary mirror is more critical than the primary (I'm thinking of the story of the Mcdonald observatory having its 2.7 meter primary mirror peppered with bullet holes by a disgruntled employee which hardly even degraded the image).

Thanks in advance for any help.

[croweater (Richard)]

Hi Michael. Bintel and Teststar both normally have these for around $85. (Size 62.5mm for GSO 8" f5 mirror) Both list as out of stock. Maybe call to see how long to come in. Agena Astro in the US have them and will ship to Au.
Cheers, Richard