Re: [APML] New image: The Crescent Nebula

[Juan Conejero <skycad@ctv.es>]

At 10:21 06/06/2003 -0700, you wrote:
>Juan,
>          Have you tested shooting through the scope without the IDAS? I just
>got rid of my refractor and am going to start shooting through my 12" LX200,
>some of which will be done from the city. I'm in a moderate to heavy light
>polluted area and will be shooting at F/7.5. I have the IDAS, but was
>wondering if I would still need it.

Don,

I don't know your exact light pollution conditions, but I bet that, yes, 
you *do* need the IDAS. I had the opportunity to verify this recently. Just 
a few days before receiving my IDAS, weather was excellent at my location, 
with exceptional transparency and LVM of about 5.5.  I did three 60 min. 
shots of M81 with the 12" LX200 at F/7 without filter from my backyard, 
which were completely ruined by light pollution. I can post one of these 
images if you want. Don't doubt, always use the IDAS.

Regards,
______________________________________
Juan Conejero, Pleiades Astrophoto
skycad@ctv.es
http://www.pleiades-astrophoto.com/en.html


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