All Fogged Up

[Gargoyle_Steve (Steve)]

Speaking of stubbie holders ..... if anyone else is like me and tends to take a break for a little while, leaving a larger sized ep (bigger than standard plossl's for instance) in the focusser unprotected to get all dewey and such - just slip a wetsuit type stubby holder over it - they fit beautifully over my Hyperion / Stratus ep's and keep them nicely protected!

NB : make sure it's a clean DRY stubby holder, not the one you just pulled your empty stubby out of!


PS: Thanks Eric!!

[Don Pensack]

AstroAJ,
Don't breathe on the eyepieces and try not to let your wet, warm, eye get too close. I often remove the rubber eyecups in the winter so more air circulates between the eye and the lens.
Exhale through the corner of your mouth away from the eyepiece, blowing the breathe away from the eyepiece as you exhale. Sometimes it helps to rotate your head so the exhalation is above the eyepiece (warm air drifts up, you see).
And definitely leave any/all eyepiece surfaces capped until use. Otherwise, dew will condense on the cold glass.
Once dew forms, use an ear syringe to blow the dew away from the eye lens.

[KG8]

sounds complicated Don, why not just use a snorkel


Just teasing ya

[casstony]

Longer eye relief allows your eye to stay farther from the eyepiece and helps avoid fogging. For example you can use a longer focal length plossl with a barlow lens rather than a short focal length plossl.