RE: (IAAC) Re: Uranometria

I've got to admit I never myself used a PC in the field, but a friend of
mine at a recent public star party had his, and despite some light pollution
from a half-hidden streetlamp, the PC was bad for our eyes' dark adaptation.
Also, it should be noted that even a red flashlight with new batteries is
ruining dark adaptation... I've noticed that my MiniMagLite isn't really
powerful enough to let me clearly see everything on the charts and books,
but it's reflection is bright enough to harm my dark adaptation: when I look
up after checking my printed references with it, the sky distinctly appears
blue. And there's light pollution at this site too... The use of very matte
paper should be promoted ;-)
Pierre Paquette
Montréal (Québec)
Que les étoiles --et rien d'artificiel-- brillent au bout de votre route !
May the Stars --and nothing artificial-- Shine Upon the End of Your Road!
-----Original Message-----
From: owner-netastrocatalog-announce@atmob.org
[mailto:owner-netastrocatalog-announce@atmob.org]On Behalf Of Don Clouse
Sent: 28 septembre, 2001 10:11
To: netastrocatalog-announce@atmob.org
Subject: Re: (IAAC) Re: Uranometria
>Since such quaint items such as printed atlas' are really relegated to
>cloudy night items, it seems to me the 3 volume set is the way to go. A
>quiet library room, a fire, java with baileys... seems right to me. :)
I agree, browsing an atlas is a nice way to spend some quiet time.  But,
they are quite useful at the telescope to, of course.  Printed material and
computer software both have their place, but for me, of a book works best in
the field.  It doesn't need a power source, other than illumination, and it
transports easily.  It's random access, keyed, analog, non-volatile data
storage - sorry, couldn't resist.  Maybe a PC works best for the home
observatory.  The software I'm familiar with (MegaStar) certainly allows for
quick, easy access - like, "Now what is that smudge that's not even on my
Sky Atlas 2000?"  I must admit, however, that I've never attempted to use a
PC in the field.  It seems to me that the amount of light emitted by the
screen - even in red-mode - would preclude full dark adaptation.  After all,
even an adjustable red light at its lowest setting is too bright if it has a
fresh battery and you are fully dark adapted.
I'd certainly be interested in hearing about anyone's experiences using
PC's/laptops in the field.
Clear skies,
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