IBF speglar

[Håkan N]

Kolla på dessa teleskop från RCOS.
De använder ION milling tekniken från ett Ukraniskt företag.
Se bilder på Stephan's Quintet mm och Tony Hall's bilder.
http://www.rcopticalsystems.com/telesco ... lling.html

"Ion Beam Figuring (IBF) was originally developed by the Eastman Kodak Company in 1988 and became operational in 1990. IBF is an excellent complement to conventional figuring. The optics are first polished (ground) conventionally and then final figure is milled by IBF. Ion Beam Figuring works on a molecular (atomic) level.
Without question, Ion Milling is the most important breakthrough ever in optical manufacturing!
RCOS offers the HIGHEST QUALITY and most economical ION MILLED OPTICS possible in the 0.37m to 1.00m sizes. We have supplied hundreds of telescopes with ION Milled Optics".


https://www.sbig.com/astronomy/hall-of- ... ny-hallas/