M27-12.3 hours

[stargazer]

hi guys,
recently I showed you my prelim. result on M27.
now I have some O3 in addtion to OSC and Ha.
what started last year in july, ended now...
when I still had my one shot color CCD (M25C) I collected some 3.8
hours of data in a night of not very good seeing last year..
in june and july 08 I acquired H-alpha and O3.
more than 12 hours total exposure time...phew - I think this gonna
become normal...
I think the image is deep in both, Ha and O3 now, and it is another
combination of different CCDs.
one shot and mono.
as for the sensitivity of CCD:
boy - that was a tremendous difference!
2.5 hours of O3 (2x2) showed much more data than 6 hours of Ha (2x2).
the SX H16 is very sensitive to green obviously, but way less
sensitive to red...unfortunately.
NP - it's just a matter of exp-time...*g*.
on the other hand - the 4021 chip is nice to handle, as it is qute
"calm"...
o.k. - end of speach - here we are with more than 12 hours tot. exp-time:
Stargazer - A Private Observatory In The Heart Of Europe
thanks for looking.
best regards,
Dietmar

[budguinn]

Diets, another beautiful image.....with tremendous depth....I don't think I've ever seen anyone add the OIII like this.

did you hint that you have sold the M25C?

[stargazer]

thanks Bud, my friend!
oh - I am afraid I have to affirm your question.
yes, I sold it - mostly because I needed the money to fund some other things.
I sure miss the lower noise (H16 is fine though) and the high sensitivity.
if there was only a monochromatic version of that chip!!!

[neilfleming]

Bastard <g>

...Neil