[PhotonCollector (Paul)]

Originally Posted by tornado33

Howdy
Theres even a lecture at an astro gathering called the Bart Bok memorial lecture. On the HST pic they mention a South African astronomer A.D.Thackaray who apparently first spotetd these particular globules, see
http://antwrp.gsfc.nasa.gov/apod/ap020108.html
I know ones in the Rosette nebula are referred to as Bok Globules. An AAT pic of IC2944 also refers to them as Bok Globules. http://www.aao.gov.au/images/captions/aat077.html
Scott

Hi Scott,

I think what the article at http://antwrp.gsfc.nasa.gov/apod/ap020108.html forgets to say is that Thackeray first spotted these dark globules in IC2944 (in 1950), rather than what the article does say which is first spotted these dark globules.

But Bart Bok first drew attention to them in 1947 - 3 years prior to when Thackeray found them in IC2944. Apparently Bok studied these dark nebulae extensively. After Bok's discovery Thackeray went on to find these dark nebulae in IC2944.

See http://heritage.stsci.edu/2002/01/caption.html where there is better wording that makes this apparent.

Nevertheless is does seem that Bok Globules and Thackeray Globules are indeed the same objects. Perhaps they should be called Bok-Thackeray Globules. Just for the record I thought Bok and Thackeray Globules were different types of dark globules.

Paul