[APML]: Color film/urban site

[Dan Baldwin <baldwin@ixtlan.colorado.edu>]

        I have been an astro photography fool this week with
our ver clear skies-- My photos are all well focused and
guided well (thanks for everyones help in figuring out
my ST4 problems)-- My problem now seems to be my suburban
setting and I'm wondering how to proceed from here. I know
that Steve Bell has achieved some good photos from a light
polluted location using hypered TP-- my question is can good
photos of dim objects using color film be achieved from a 
moderatly light polluted site ?  These are my results so far,
if someone could please advise me , I would greatly appreciate it.
I used four different films so far  1) Unhypered PPF 400 (UPP),
2) Hypered PPF 400 (HPP), 3) Unhypered Fuji 800 (UF8) and
4) Hypered Fuji 400 (HF4)-- I used my C11 at either f/10 or
at f/5.6 with a reducer. I am only judging the result as
good,fair,poor,etc--I realize that this is a crude way to
describe a photo. Poor refers to  lack of faint structure
ie spiral arms of M51 due either to under exposure or lack
of contrast between object and light polluted background.

Object          Film   f/ratio  exposure        result

M51                     HF4             f/10      60min         fair (can see spiral arms)

M82             HF4             f/10      60min         good

M27                     UF8             f/10      60min         fair-good

M17                     UF8     f/10      60min         fair-good

M31                     UF8             f/10      60min         fair-poor (some dark 
lanes)

M31                     HPP             f/5.6     25min     worse than above
                                                                                        
(lots of "fog",no structure)

M31                     HPP             f/5.6     45min         same as above

M42                     UF8             f/10      45min         good-excellent 
(thankfully !)

NGC 7531 (?) UF8        f/10      90min         fair-poor (no spiral structure)

M33                     UPP             f/10      90min         poor (faint spiral 
structure)   

M33                     HPP             f/5.6     40min         same as above 

M1                      UPP             f/10      90min         fair-good (can see red 
filaments)

M1                      HPP             f/5.6     25min         poor (no filaments, lot 
of fog)


As I'm compiling this, I can see that I still need to make some comparisons,
like UPP and HPP for M42 and M51 and also HF4 and UF8 for M33.

Should I give up on getting a good color photo of M33 from my suburban site ???
Do these results seem typical ? Any advice (please !) ?

Thanks,
Dan Baldwin