Re: [APML] 10 frame Rosette Mosaic

[Matt BenDaniel <matt@starmatt.com>]

Bobby,

That's world-class! Keep up the great work!

Matt

At 01:15 PM 2/10/2002 -0600, Bobby Middleton wrote:
>Hello all. I've finally posted my "winter project" for this season. It's a
>10 frame (yep; ten) mosaic of the Rosette nebula. I was able to oevrcome the
>frame warping difficulties that kept me from going past 5 or 6 frames on my
>previous projects by registering the central 3-4 frames with Registar on top
>of a wide-field image; then building the additional single frames on top of
>that. I still had some warping but I believe one can take the image at
>whatever stage and re-register it on a widefield image to get things back to
>linear alignment. It's here:
>http://www.koyote.com/users/bobm/rosette2.htm
>All 10 frames are composites of two 60 min exposures on hypered Kodak LE 400
>film.
>I posted a high-res crop of this to the AP users group about 2 weeks ago for
>comparison with CCD images made with two different wide-field instruments.
>The high-res central crop from my 12.5" f/7 newt is on the page below along
>with an identical crop from Ray Gralak's AP 105 st-8 Ha image and Mark
>Jenkin's Ha image from a 9.25" Mak-newt with a FLI CCD camera. Those
>comparisons are at the link below if anyone is interested in resolution
>comparisons of film and CCD cameras. The fewer stars from the CCD images are
>a result of the Ha filter.
>http://www.bigcigarastronomy.com/Rosette-Comparison2.jpg
>Bobby Middleton

--
Matt BenDaniel
http://starmatt.com


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