Re: [NTLK] Red Backlights for Astronomy

>>>>> "Adam" == Adam Goddard <pashosh@tpg.com.au> writes:

    Adam> Mr Grier(owner of adago.net) just replied and suggested using
    Adam> a red filter as well. Power for led lighting is no problem,
    Adam> and will probably be easiest and cheapest way to do this, but
    Adam> I just thought it'd be cool to have a dedicated "Red
    Adam> Newt". :-) I'll look into some options on filters at some
    Adam> point in time.

Red filters are not likely to work very well due to a lack of overlap in
the spectral range of the green backlight and the bandpass of the red
filter. With my laptop and a ruby red acrylic cover which I use for
astronomy, blue completely disappears (no surprise) and green is very
hard to see. Red works quite well (again, no surprise) as does white.

Red LEDs shining on the Newton might work okay. The native green is
rather blinding at night. If you use your telescope in the field were
dew is an issue, try putting it in a cardboard box lying on its side so
you access the box from the side. This helps to inhibit dew on the
Newton.

regards,

roland

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Roland B. Roberts, PhD                             RL Enterprises
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roland@astrofoto.org                           Brooklyn, NY 11220
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