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The 3 ly distance star is an error. Iota Persei is about 34 ly away.

See: http://www.astronexus.com/scripts/eos/eos_star.php ?IDType=HD&ID=19373

angel'o'sphere

The closest they get is HD 10307. The entire list is:

Tau Ceti, 11.9 light years
Alpha Centauri B, 4.35 light years
Epsilon Eridani, 10.5 light-years
Epsilon Indi A, 11.8 light-years
http://www.glyphweb.com/esky/stars/keid.html">Omic ron 2 Eridani, 16 light years
Beta Canum Venaticorum - 27.31 light years
HD 10307, 41.2 light years
HD 211415>/a>, 44.4 light years
18 Scorpii, 45.7 light years
51 Pegasus, 40 light years

There is also a top 50 list

The closest they get is HD 10307. The entire list is:

Tau Ceti, 11.9 light years
Alpha Centauri B, 4.35 light years
Epsilon Eridani, 10.5 light-years
Epsilon Indi A, 11.8 light-years
http://www.glyphweb.com/esky/stars/keid.html">Omic ron 2 Eridani, 16 light years
Beta Canum Venaticorum - 27.31 light years
HD 10307, 41.2 light years
HD 211415>/a>, 44.4 light years
18 Scorpii, 45.7 light years
51 Pegasus, 40 light years

There is also a top 50 list

I like David Nash's list of 50 nearby sunlike stars within 50 light years.

18 Scorpii is on there, as is the infamous Tau Ceti. 18 Scorpii was one of the four closest matches.

Orange street lights produce less light pollution.

The light is produced from a single transition in the Sodium atom, therefore the light is confined to a single wavelength and is trivial to filter.

The light from the white lights is, obviously, spread across the spectrum and is therefore hard to filter.