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Re: [APML] OT: Webcam Lunar Mosaic
Juan, very nice indeed! Almost 3D.
Stuart
----- Original Message -----
From: "Juan Conejero" <skycad@ctv.es>
To: <astro-photo@seds.org>
Sent: Monday, November 24, 2003 11:00 AM
Subject: [APML] OT: Webcam Lunar Mosaic
>
>
> Hello,
>
> It has been a long time since my last posting here; now I come back with a
> new lunar mosaic. This is definitely off-topic, but I hope you'll like to
> have a look at it.
>
> You can see a reduced version here (1.6 MB):
>
> http://www.astrosurf.com/pleiades-ap/20030409/mosaic-rgb-atw.3000.jpg
>
> Details:
>
> - Philips ToUcam Pro webcam, unfiltered.
> - Meade LX200 12", prime focus (f/10)
> - AVI video capture with K3CCDTools 1.0.6
> - Video frames aligned and stacked in RegiStax 2.1.13.0 beta
> - Mosaic composed in Photoshop 6
> - Image restoration and noise reduction by A Trous wavelets processing
done
> in Pleiades PixInsight 1.0.0.33 beta
>
> Some facts:
>
> - Mosaic composed by 50 subimages
> - 4651 video frames used, about 40% of total frames captured
> - 4.9 GB of raw data
>
> I took the original AVIs on a good and steady night, past april 9, and
they
> have been waiting to be processed until now. Seeing was reasonably good
> (8/10), though not spectacular. I tried to do my best to keep color data
as
> accurate as possible. I "calibrated" the camera with a white source before
> taking the videos, and carefully planned exposure, contrast and gamma
> settings, which were not changed during the whole acquisition process.
> Nevertheless, there are slight color differences between some frames which
> I have been unable to fix/explain, and in general keeping consistent color
> has been a very difficult task with this mosaic, especially for the
> brightest areas. Mosaic frame boundaries are also well visible; I know
they
> should be corrected, but really don't have the time.
>
> I'll appreciate your comments and advice regarding this image, especially
> about color.
>
> If you definitely hate to see a color lunar image, here is the processed
> luminance:
>
> http://www.astrosurf.com/pleiades-ap/20030409/mosaic-L-atw.3000.jpg
>
> Enjoy it.
>
> - Juan Conejero.
>
>
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