From: Milton Aupperle <milton@outcastsoft.com>
Date: October 4, 2007 10:51:17 AM MDT
To: Astro_IIDC@yahoogroups.com
Subject: Re: [Astro_IIDC] Narrowband Venus
Hi Alan;
Nice Venus images. The cloud detail with the CaK filter is interesting. I had little luck with Venus and seeing any clouds when it was that thin a crescent.
What focal length were you shooting Venus at and what sort of exposure times with the CaK filter?
TTYL..
Milton J. Aupperle
President
ASC - Aupperle Services and Contracting
Mac Software (Drivers, Components and Application) Specialist
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On 3-Oct-07, at 9:23 PM, Alan Friedman wrote:
Hi all -
I used a collection of Baader narrowband filters to record these
images of Venus - H-Alpha (655nm) , Solar Continuum (540nm) and CaK
(395nm). The CaK filter is close enough to the UV wavelengths to show
a bit of cloud detail.
http://www.avertedimagination.com/img_pages/venus_092407.html
Captured and processed using AstroIIDC. The composite image was
prepared in Adobe Photoshop CS3.
best wishes,
Alan