PST "rust"

[PeterW]

If you have owned a PST for a while it may be wise to check the coating on the front lens. In some of them the coating has degraded and this affects the image quality, though supposedly not the safety of usage.

I found out about this issue on the cloudynights forum (solar observing section) and have just had mine repaired under warranty though Telesceope House.

Cheers

PEterW

[centroid]

Hi Peter

Your's is the second one I've heard of in the past few months.

I bought mine last year, and up to now it's still ok, but I'll be keeping a check on it while it's still under warrantee.

Dave

[FLO]

Worth noting that this issue only applies to the original PST, the one being sold today has different coatings.