Let's turn our attention to the open cluster NGC 6704, discovered by the outstanding German astronomer and comet-hunter Friedrich August Theodor Winnecke with his 3-inch Mertz comet seeker
To prevent condensation from forming on a telescope when we bring it indoors after observing on a cold, damp night, he recommends placing it in a tightly sealed garbage bag, a procedure that works easily for my stubby 6-inch f/4 comet seeker
Barnard's automatic comet seeker
(S&T: May 1979, page 420).
A few years later, while completing a 13 1/2-inch comet seeker
, he came up with a novel eyepiece holder based on kinematic principles.
And I talked about my work on comets and introduced Minerva, my 6-inch comet seeker
Her debut book, The Comet Seekers
, was published last year in seven countries including the UK, USA and Canada, and selected as one of the best books of 2016 by outlets including Glamour magazine.
French astronomer Charles Messier first put together a catalog of non-comet celestial objects, called "Catalogue des NAaAaAeA@buleuses et des Amas d'AaAaAeAatoi ("Catalogue of Nebulae and Star Clusters"), in 1774 to help comet seekers
by telling them what they should not waste their time on.