From: r_malin2 (robt.wndy_at_antispamdomain.not)
Date: Tue Jun 24 2003 - 03:15:42 EDT
Excellent Image Mark....
Robert..
--- In digital_astro_.at._yahoogroups.com, "Mark Hanson" <markh_.at._t...>
wrote:
> Johannes,
>
> I posted my pic of The North American Nebula so you could see it.
>
> http://btlguce.digitalastro.net/latest.htm
>
> Mark
>
>
> -----Original Message-----
> From: Johannes Schedler [mailto:schedler_.at._c...]
> Sent: Monday, June 23, 2003 2:45 PM
> To: digital_astro_.at._yahoogroups.com
> Subject: [digital_astro] New image: North America Nebula
>
>
> Yesterday I was short of sleep and took a lot of images from
NGC7000
> in this warm midsummer night.
>
> The first results with 5 min at ISO800 and mag 5 sky in white light
> were disappointing, as almost no nebula showed up and the
background
> was grey.
>
> So I tried the Lumicon 2" UHC filter with >95 transmission in H-
beta,
> O3 and H-alpha. 10 min shots at ISO1600 resulted in a blue nebula
> with some red lines, but it was there!
> See the details and result after a lot of processing, color
shifting
> and blurring with masks to reduce the noise:
>
> http://panther-observatory.com/deepsky.htm#78
>
> Later this week I will include the filtered raws to my 10D review.
>
> Hope to get some more efforts for comparison on this object from
you
> (Rick, Mike, Mark?)
>
> Johannes
>
>
>
> Before posting an image to our group please read the space
mangement
> guidelines:
> http://groups.yahoo.com/group/digital_astro/files/Photos%20Section%
20Space%2
> 0Management%20Guidelines
>
> Please check the digital_astro FAQ at:
> http://www.szykman.com/Astro/AstroDigiCamFAQ.html
>
> Be sure to visit the digital_astro Gallery and Archive at:
> http://velatron.com/dca/gallery
> http://velatron.com/dca/archive
>
>
>
>
> Your use of Yahoo! Groups is subject to
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Before posting an image to our group please read the space mangement guidelines:
http://groups.yahoo.com/group/digital_astro/files/Photos%20Section%20Space%20Management%20Guidelines
Please check the digital_astro FAQ at:
http://www.szykman.com/Astro/AstroDigiCamFAQ.html
Be sure to visit the digital_astro Gallery and Archive at:
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http://velatron.com/dca/archive
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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