Re: [APML] 7331 (again!)

["mike and dianna" <galaxy@ncweb.com>]

Excellant Tony,

Looks like hypering is the only way to get this film to record really well,
and Well at that !
I did another test shot last night with the RG200 (un-hypered) on M31. With
an 8" F3.5 newtonian, a 70 minute exposure didnt record much more than a 45
minute exposure. The only real thing I noticed between the two is the dust
lanes are a bit darker in the 70 minute exposure. You are right, the film
seems to stop recording well in fast systems after a certain time. One plus,
no evidence of sky fog....mabey 90 minutes is in order next.
Did you say that Fugi hq100 keeps recording well ? Was that hypered ?

Mike Leitch
galaxy@ncweb.com
http://www.ncweb.com/~galaxy/home/astropho.htm

----- Original Message -----
From: <Tonyhallas@aol.com>
To: <astro-photo@seds.org>
Sent: Saturday, September 22, 2001 12:41 AM
Subject: Re: [APML] 7331 (again!)


> Hello everyone,
>
>     Last night I used TWO HOUR hypered Kodak Royal Gold 200 @ 90 minute
exposures of 7331 (great test object) and recorded a LOT more than the
previous negatives. Tracking was very good, as was the focus this time. I
"polluted" these better negatives with the original Picture Window result
and came up with a new image and a close up.. you can see H II regions and
galaxies everywhere... in the close up, the companion galaxy to the upper
left even has two faint H II regions showing. As the signal to noise ratio
is increased through PW more detail and color is showing up... almost CCD!
:-)
>
> You can see these at:
>
> http://www.astrophoto.com/7331.htm
>
> and:
>
> http://www.astrophoto.com/7331CU.htm
>
>      Tonight I am taking the LAST images of this galaxy in an attempt to
repeat last night's results... then I will have four really good negs to
work from. This has been a real learning experience...
>
>       Tony
>
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