I've had the
I wondered what others do to deal with the dew after a session?
Regards
Graeme
notFritzArgelander wrote: ↑Sat Feb 20, 2021 9:11 pm With a closed tube scope I always let the humidity equalize before putting the OTA in its case. I leave the visual back open and unoccupied and the tube horizontal (dust, etc.) falls down. I'll often leave it this way overnight.
I've treated my Intes MK66 this way for the 17 years I've had it and the optics are whistle clean. (The OTA exterior is scuffed but, hey....)
Lady Fraktor wrote: ↑Sat Feb 20, 2021 9:18 pm In between sessions you could use dessicant to keep humidity low inside the tube.
A 35mm film canister with holes in the barrel can be placed in a 1.25" adapter to seal the tube.
You can also use a stainless steel tea ball and place it inside the focuser drawtube.
I bring theGraeme1858 wrote: ↑Sat Feb 20, 2021 9:45 pmnotFritzArgelander wrote: ↑Sat Feb 20, 2021 9:11 pm With a closed tube scope I always let the humidity equalize before putting the OTA in its case. I leave the visual back open and unoccupied and the tube horizontal (dust, etc.) falls down. I'll often leave it this way overnight.
I've treated my Intes MK66 this way for the 17 years I've had it and the optics are whistle clean. (The OTA exterior is scuffed but, hey....)
Thanks nFA. Good strategy. Do you bring it in after the session or leave it out in the external temperature? I think that my problem with the flocking paint was caused by bringing it indoors after a particularly humid session but I didn't leave it open. Well it's been indoors with both ends open for four hours and the sky was clear earlier, but it's clouded over now so I'll have to wait to test it!
Lady Fraktor wrote: ↑Sat Feb 20, 2021 9:18 pm In between sessions you could use dessicant to keep humidity low inside the tube.
A 35mm film canister with holes in the barrel can be placed in a 1.25" adapter to seal the tube.
You can also use a stainless steel tea ball and place it inside the focuser drawtube.
I have a good sized dessicant bag somewhere. And I'm sure I can find an old film canister.
Thanks
Regards
Graeme
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