When was the 1st amateur narrow band image taken?

[Aramcheck]

Hi folks,

Does anybody know when narrow band imaging started to become popular in the amateur astro world? (I'm aware of the 1995  Pillars of Creation Hubble / SHO palette)

Many thanks
Ivor

 

[Gfamily]

A quick search through Google Books for content that included the words  << narrowband, filter, astronomy, amateur >> for books from the 20th Century brings back snippets of text from some older books. 

The earliest reference from 1972 relates to the ability of amateurs to use a Narrowband Solar filter for observing Solar Prominences since about 1967

The use for Solar observing is also mentioned in the 1986 Yearbook of Astronomy

For non solar work (adding OIII to the search) the references seem to come later - with a mention made in a 1994 issue of Astronomy Now magazine.  

[Aramcheck]

Thanks @Gfamily!

Much appreciated
Ivor