X-Nico

3 unusual facts about V band


Dwarf nova

#SS Cygni stars (UGSS), which increase in brightness by 2-6 mag in V in 1–2 days, and return to their original brightnesses in several subsequent days.

Extremely high frequency

The upcoming Wi-Fi standard IEEE 802.11ad will run on the 60 GHz (V band) spectrum with data transfer rates of up to 7 Gb/s.

M band

The modern M band intersects with the V (50–75 GHz) and W band (75–110 GHz) of the older IEEE classification system.



see also

Airglow

At V band, the emission from airglow is V=22 per square arc-second at a high-altitude observatory on a moonless night; in excellent seeing conditions, the image of a star will be about 0.7 arc-second across with an area of 0.4 square arc-second, and so the emission from airglow over the area of the image corresponds to about V=23.

DM Lyrae

Observers at Kyoto University carried out V band CCD photometry with the 60 cm reflector and detected superhumps of 0.1 mag amplitude, thus reclassifying DM Lyrae as an SU UMa star.