Re: [APML] R200SS first light and new website ...

["Arne Danielsen" <arnedani@online.no>]

Dear Philippe,

I wish my "first-lights" had been as good as yours! Congratulations on two
_very_ good images!!

You have managed to pick up quite a bit of signal in both images, but I'm
especially impressed by how much blue you've managed to pick up on the M45
shot. As Chris Schur mentioned - E200 isn't actually renowned for it's blue
sensitivity! This indicates that despite the humid air (as indicated by the
amount of frost on your equipment after the session) the sky conditions are
quite good at your imaging location.

The guider (you) also seem to have done an excellent job!!! :-)

I was however expecting to see more diffractions spikes (from the
spider-vanes) on the brighter stars. I have some similar shots (5, 10, 20
and 30 minutes) done using the same OTA, same film and with the same type of
SLR (the only difference is that I have a lot more light-pollution) that
show much more prominent diffractions spikes. This might indicate that your
focus is slightly off! Please contact me off-list if you want to receive any
of the raw scans for comparison!

Best regards,
Arne
--
Arne Danielsen
Langhussenter 15, 1405 Langhus, Norway
mailto:arne.danielsen@oslo.online.no
http://arnedani.home.online.no/
N59°45'14"  E10°50'38" A115m

----- Original Message ----- 
From: "Philippe Chretien" <junk1@gcesoft.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Sunday, January 11, 2004 10:14 PM
Subject: [APML] R200SS first light and new website ...


> Hi all,
>
> In fact, this isn't really the first light ... I should say the first
well-tracked and not too badly  focused light I got with this
> new
> scope. It took me four attempts to finally get a setup I am happy with.
Both pictures are manually guided and shot on Kodak E200
> film. The seeing was average and the temperature -10C.
> "http://www.astrophoto.ca/en/new.html";
>
> This is what the scope looks like after a night at -10C with a lot of
frost in the air!
> "http://www.astrophoto.ca/en/equipment/scope1.html";
>
> Comments welcomed ...
>
> Ciao,
>
> Philippe Chrétien
> http://www.astrophoto.ca
>


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