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Scope and cold weather

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  • 27-11-2010 9:00pm
    #1
    ArseLtd
    Registered Users Posts: 214 ✭✭


    I was out with the rifle last night after mr fox. It was absolutely freezing but anyway no sign of him. I was out for about an hour or more and i came back in. I just looked though the scope and nothing! The inside was frozen, or im thinking the gas inside had some reaction to the cold, anyone else ever seen this?

    After a while inside it was perfect again. I have tissue paper wrapped around it and tape so im hoping that will work tonight. :cool:


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    #2
    Tackleberrywho
    Closed Accounts Posts: 8,590 ✭✭✭Tackleberrywho


    ArseLtd wrote: »
    I was out with the rifle last night after mr fox. It was absolutely freezing but anyway no sign of him. I was out for about an hour or more and i came back in. I just looked though the scope and nothing! The inside was frozen, or im thinking the gas inside had some reaction to the cold, anyone else ever seen this?

    After a while inside it was perfect again. I have tissue paper wrapped around it and tape so im hoping that will work tonight. :cool:

    That should be frost on the lense not the inside, takes severe cold for gas to freeze.
    If you give the lense a wipe of isopropyl alcohol it will not condensate and freeze


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    #3
    ArseLtd
    Registered Users Posts: 214 ✭✭ArseLtd


    Tackleberrywho wrote: »
    That should be frost on the lense not the inside, takes severe cold for gas to freeze.
    If you give the lense a wipe of isopropyl alcohol it will not condensate and freeze

    Nope! It wasn't on the outside. Of course thats the first thing i tried, i wiped front and back lens. But i could see on the front lens it was on the inside.


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    #4
    ormondprop
    Registered Users Posts: 1,398 ✭✭✭ormondprop


    what sort of scope is it


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    #5
    ArseLtd
    Registered Users Posts: 214 ✭✭ArseLtd


    ormondprop wrote: »
    what sort of scope is it

    Simmons 8-Point 3-9x40. I got it off ebay over a year ago and this is the first problem i've had with it.


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    #6
    ormondprop
    Registered Users Posts: 1,398 ✭✭✭ormondprop


    as was said before the gas inside should not freeze unless some moisture has managed to get inside somehow and that is whats freezing, have you had it long and is it still under warranty as i would email simmons about it


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    #7
    clivej
    Registered Users Posts: 7,057 ✭✭✭clivej


    As you got the scope off the bay I would think it was opened at sometime in the past and the ANTI fogging nitrogen gas escaped out. The water vapour in air inside the tube will freeze now just as you have seen for yourself.
    It will also start to fog up when the dew point of the air inside gets below a certain point and starts to condensate on the inside of the colder glass lens.


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    #8
    ArseLtd
    Registered Users Posts: 214 ✭✭ArseLtd


    clivej wrote: »
    As you got the scope off the bay I would think it was opened at sometime in the past and the ANTI fogging nitrogen gas escaped out. The water vapour in air inside the tube will freeze now just as you have seen for yourself.
    It will also start to fog up when the dew point of the air inside gets below a certain point and starts to condensate on the inside of the colder glass lens.

    That sounds right Clivej. I think i'll see if i can send it away to Simmons for repair. I remember it saying it had warranty on it. Thanks for that.


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