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    Re: Index checks with laser and without
    From: Alexandre Eremenko
    Date: 2007 Jan 4, 12:35 -0500

    
    Dear Ken,
    I mostly take Lunars from my balcony.
    Only once (in fall 2006) I took them
    from a nearby Nature reserve area
    (1 mile away) and the average error was +0.8'
    and pretty consistent in 3 DIFFERENT star-lunar distances.
    I mean I used 3 different stars.
    
    {}From the balcony about 50% of all Lunars are perfect
    (that is the averages are within 0.2')
    But another 50% have errors of 0.4' to 1'.
    
    Alex
    
    On Thu, 4 Jan 2007, Ken Muldrew wrote:
    
    >
    >
    > On 3 Jan 2007 at 23:45, Alexandre E Eremenko wrote:
    >
    > > What makes it really strange is that the error
    > > when present is usually constant in long series.
    > > So averaging does not help. I would almost say
    > > that it is constant during a day... though this is
    > > not always so. It looks like it depends on...
    > > weather:-) Thopugh I understand that this idea
    > > is absurd. Some new kind of strong abnormal refraction
    > > in Indiana?
    >
    > Does this intermittent error only show up when you take lunars from a
    > particular location (e.g. your balcony) or have you also suffered from it
    > in other locations?
    >
    > Ken Muldrew.
    >
    > >
    
    
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