First of all I think I've seen every Cen A image on the web
and I think I may never image Cen A again
Gary, I saw Yohannes excellent Cen A in my extensive web surfing and for sure his large 50% size colour image is also quite deep, although as presented on his web site it is clearly not as deep as either my 50% size "Deep Field" here:
http://www.pbase.com/strongmanmike20...69579/original
or 50% size "Ultra Deep Field" version here:
http://www.pbase.com/strongmanmike20...33927/original
Yohannes's roll over enhancement is great but in Luminance only so not a true full "colour" image and it is displayed rather small so hard to analyse properly. I have a deep luminance only image at my site too, just not with the scroll over (and a larger image size so the noise is more obvious):
http://www.pbase.com/strongmanmike20...29117/original
Les, that deep UK Schmidt plate was just a single 70min exposure then photographically enhanced using image amplification by David Malin, amazing huh? The UK Schmidt is a 1.2m aperture F2.5 astrograph that takes 14" square plates
. It is sure to have gone somewhat deeper than my effort but it is of course not in colour though
. I actually have that image cropped to match mine and displayed at my web site with all the other versions of my Cen A done with the same data set....
.
http://www.pbase.com/strongmanmike2002/centaurus_a
Greg, yes all 19.5 hrs (over 20hrs including a few subframe discards) were taken from Wiruna, which has very dark skies and at over 1000m ASL, with good seeing, clear and transparent for three nights in a row, not to mention a flawlessly operating portable rig, sheesh... I think I got lucky
...oh and I've got a long way to go to be in the Gendler marathon league, that guy is a machine
Mike
