Getting rid of dew

[Dom1961]

Just came in from looking at the meteors and all of my eps and my filter are really wet from dew. Is there a special way that I need to leave them to get dew off them? Also will the dew leave any marks or damage the ep or filter?

Thanks

[Floater]

Pretty sure you should just leave them to dry.

There will be no damage.

[John]

The trick is to keep your eyepieces and filters slightly warmer than outside temperature. I keep mine in a foam lined case which seems to retain a little warmth.

If eyepieces get too cold you will find that they can mist up when you get your eye close to them.

[brantuk]

Yup - I keep mine in a foam line flight case too, and close the lid each change. You can also keep the "next one" that you intend to use in a pocket to warm it up a little before swopping in. Those are the "free" solutions - some folks use an eyepiece dew band and dew controller which will cost around £80 at cheapest - but most of the time I don't find them necessary. Hth

[Bart]

If the scope has a rack to keep the EPs in at the telescope, I attached a piece of camping mat (or whatever you like) above them like a flap and just pick them out and replace the EP i took from the focusser. Works just fine for a couple of years now. If you're interested i could post a picture.

Barry

[Bart]

You can see the 'cover' to the right of the scope where the eyepieces are. Hope this helps

Barry

[Scott]

were they wet before you brought them in? bringing something very cold into somewhere warm will do this. I leave my stuff in the shed til the next day to try and reduce condensation. I've also heard of people puting their ep's into a sealed plastic back when bringing indoors to keep the warm air off the ep. not tried it though

[John]

The main thing is to let the moisture evaporate from the eyepieces / filters naturally. By all means mop off the bodies and barrels but avoid the tempation to wipe the lenses.

[Mark in Macc]

While observing I keep all my filters and eyepieces in a foam lined (camping mat) plastic food container with a lid. I only take out what I need. If you need to take things inside after a session observing, leave them to equilibrate and all will be fine.