I believe I grew this a great many years ago, and it was probably killed off by using Cygon 2e. This is a mule ear Oncidium, is it not? I would check out Jay Pfals site,
http://www.orchidspecies.com/#sec1 , an orchid encyclopedia, for culture. Jay has a lot of errors, but it is good for a first pass, then compare it to info from other sources on the internet. My guess is going to be medium light, like a Catt, and intermediate temps, but it has been too many years, and I used to practice 'one culture fits all', which I certainly don't do any more.