6'' Orion SkyQuest f/5 12.5" Astrotel truss dob f/3.3 20" Super FXQ Starmaster William Optics 80mm ZenithStar ED II 1850/2500 Observing sessions grand total for 2013, 49. So far in 2014, 11
Quote:How would I pack a pristine, coated primary mirror for shipping via commercial carrier cross-country? I dread the development of sleeks on the coated surface on the bumpy over-the-road trip and associated handling.
Orion XT12i with Swayze-refigured primary & Protostar secondary
Televue NP101 refractor
William Optics Megrez 90 refractor
Universal Astronomics Deluxe Mounts
Quote:A lintless tissue paper (resembling tracing paper) should be safe to place in contact with the optical surface. More than one layer is a good idea. Scotch or masking tape is advised to snugly wrap things so as to keep the tissue immobile. The tape need only be applied around the side of the mirror and/or the back side. On top of the tissue, which can be delicate, layers of other, more durable paper can then be wrapped (and snugged with tape, too, if desired.)
Mike Lockwood - Owner, Lockwood Custom Optics. 20" F/3 MX Starmaster, 14.5" F/2.55 self-built Newt., nine self-built scopes, 4.25" to 30" http://www.Loptics.com/
Quote:Bill posted a link above to my packing instructions.
Quote:Edit: An afterthought - Has anyone experience with using a layer of the stretchy plastic cling wrap used in the kitchen (example: Saran wrap) in contact with coatings?----C
Best regards, Patrik Iver 60°N, 22°E
Quote:So is pure cotton bad? may not be ideal but will it damage? what if it is kept like that for a few months? (like my 8" zambuto that is awaiting completion of its new home?)
Quote:What is a good source of acid-free paper?
Quote:I had to send some mirrors back to Royce for rework and he recommended using Viva paper towels to cover the mirror front surface (Taped only on the towels not the glass). These are very soft and oil free towels and offer a ready alternative to optical paper.
Shane in black-zone New Mexico
Quote:Quote:I had to send some mirrors back to Royce for rework and he recommended using Viva paper towels to cover the mirror front surface....I did this once, and placed corrugated cardboard over the paper towel. BAD MISTAKE! Do not use corrugated cardboard! During shipping, the coating picked up fine scratches that matched perfectly the corrugations in the cardboard.The Viva paper towel was not an innocent player here. Maybe Royce has had good luck with Viva paper towels, but my one bad experience will ensure that I'll only ever use optical paper in the future.
Quote:I had to send some mirrors back to Royce for rework and he recommended using Viva paper towels to cover the mirror front surface....