How can I safely clean optics

[DRL333]

I am about to purchase a second hand 10 " Mead LX200R. The catch is that the front correction lens has a buildup of dust (outdoor grit I expect) as a result of dirt buildup on dewy nights. It resists a blower brush.

There must come a point in the life of any such instrument where cleaning becomes necesary. How can I clean the correction lense without damaging the lens or coatings?

Any suggestions welcome

Derek

[xstream]

Derek,
UHTC cleaning solution is what you need, if you go here (http://www.bintel.com.au/Accessories.html)you will find it under cleaning aids.

[dannat]

york optical also sell a god litle clean kit, with solution, little blower & cotton buds (of sort) to clean lens with.

[Matty P]

Derek, try this link http://www.arksky.org/asoclean.htm
Good luck.

Matt

[acropolite]

Derek, as John said, stick with the Bintel snake oil but follow Dr Clay's cleaning instructions as listed by Matt. Mixing up a batch of Dr Clay's snake oil is an expensive exercise and you'll have enough to last a thousand lifetimes, it's cheaper to buy a bottle from Bintel (or any other reseller if they have an equivalent)