I received today my "new" Lunt LS60tha with 12mm Blocking filter and found it shockingly dusty, with other possible issues. Pics here: https://www.cloudyni.../11551-lunt-60/
So, one issue is globs of what looks like glue carelessly applied and/or dripping/oozing, both near the blocking filter and aside the etalon. The glob near the blocking filter is very close to the glass. Also on the blocking filter glass surface are to "circles" that I could not capture an image of, which look kinda like looped hairs. About 2/3 to 3/4 of the circle is visible, terminating at the edge of the glass. One of the circles, at 5:30 in the photo, is maybe 3-4mm in diameter; the other circle, located at 8:30, is about half the size of the first. They are invisible until you shine a light at the proper angle, then they are really obvious.
The third photo is most worrisome, showing how thoroughly filthy the surface of the etalon is. In pic 2 you can see some of the objective's surface, also covered in dust.
Last photo shows an odd saw-tooth on one edge of the finder shoe of the clamshell. Is that intentional? It's sharp enough to cut a finger on.
On a cursory inspection of the outside of the OTA I see no obvious signs that the scope has been used, though it is dull and smudged all over, not clean and shiny. I've bought a lot of various new and used gear over the last 7 yrs and this is the sorriest looking piece of kit I've ever received. Ironically, and sadly, it is also the single most expensive piece of equipment I own (at full retail).
So, is any of this normal for this scope? Would anyone accept something in this condition? I'm particularly interested in hearing from people who have the Lunt 60, though other comments are of course welcome. My initial reaction is that this thing is so desperately dusty inside and out that it must be professionally cleaned before it is serviceable.
Edited by Usquebae, 17 July 2019 - 09:33 PM.