Richard136
-
Posts
231 -
Joined
-
Last visited
Content Type
Profiles
Forums
Gallery
Events
Blogs
Posts posted by Richard136
-
-
Thanks, all.
So this sounds like I'm concerned over nothing. Good to know.
What then is the general practice with dew heaters?:
- turn on the lowest useful setting to prevent dew whilst scope is outside. How warm do they get and doesn't this heating creates thermal currents in the tube?
- leave the heater on when bringing the scope inside after observing(?)
I'm assuming the heater does not prevent dewing-up when bringing the scope back indoors, i.e. it doesn't heat it up that much.
I'm clear on the points about not packing the scope away whilst wet; that makes total sense.
-
Hi.
I am getting a second hand triplet refractor. It's air spaced.
I am concerned about the potential effects of dew between the elements of the objective.
Concern is along the lines of:
- dew builds up on all cold surfaces, including presumably the inner surfaces in the overall objective.
- dirt, water marks etc condense on the inner faces.
- it's not practical to clean these inner faces.
- potentially leaves an uncleanable lense
Is this concern grounded or off base?
I don't have a dew heater yet. I'll get one of course. The question is do I need one for the care of the objective in terms of dew, or just to extend observing sessions.
Thanks for the advice. R
Dew on triplet refractors
in Getting Started General Help and Advice
Posted
Thanks, Neil.
Sounds like a different experience to the others if you are getting inner condensation. Love to see a pic of the objective after the dewing has gone, if possible please.