pHUBBLE’S VARIABLE
NEBULA Edwin would be
proud of this image of his
namesake nebula taken with
the orbiting observatory that
also carries his name!20 FEBRUARY 2020 • SKY & TELESCOPE
The author documents two
decades of NGC 2261’s variability
through sketches.uCHANGING MORPHOLO-
GIES The author’s sketches
are displayed in chrono-
logical order. Noted are
the observation dates and
telescope specs.SHIFTING SHADOWS by Howard Banich
March 10, 1999
20-inch f/5 at 413×February 9, 2005
28-inch f/4 at 457×