In 1949, NGC 2261, Hubble's Variable Nebula, was the first object photographed by the 200" Hale Telescope atop Mt Palomar. In 1916, Edwin Hubble discovered that not only a known variable star produced a variation in this object but the nebulosity itself was also a variable source of illumination.
Although this object is described as comet-shaped, I liken it to having the appearance of a sail of a boat. I observed it Thursday evening (12-26) from my home under conditions of excellent transparency produced by very low humidity accompanying a high pressure system entrenched over California. I suspect 6.5 to 7 magnitude visual skies were likely visible from Mt Pinos during this time.
http://casjobs.sdss.org/ImgCutoutDR7/getjpeg.aspx?ra=99.78936154118313&dec=8.757267313333333&scale=0.39612&opt=&width=512&height=512
and:
http://observing.skyhound.com/archives/jan/NGC_2261.html
Although this object is described as comet-shaped, I liken it to having the appearance of a sail of a boat. I observed it Thursday evening (12-26) from my home under conditions of excellent transparency produced by very low humidity accompanying a high pressure system entrenched over California. I suspect 6.5 to 7 magnitude visual skies were likely visible from Mt Pinos during this time.
http://casjobs.sdss.org/ImgCutoutDR7/getjpeg.aspx?ra=99.78936154118313&dec=8.757267313333333&scale=0.39612&opt=&width=512&height=512
and:
http://observing.skyhound.com/archives/jan/NGC_2261.html