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Hi
Tony, all David
Malin has some pictures of globular clusters in its
web page. This is an example: http://www.aao.gov.au/images/captions/aat070.html
..... with blue stars. Jose
Fernandez -----Mensaje original----- Hello Steve, Tonight I will
calibrate my CCD on a G star like our sun, I have a standard RGB filter set
from SBIG with IR cutoff filters. If anything, I come out just a tad green so I
suspect that my ideal exposure times should be 1.0 RED, .95 GREEN, and 1.6
BLUE. But I suspect there really are blue stars in M13... I see them show up in
tricolor film shots as well as a host of CCD shots... just too many instances
to call this a fluke. Tony |