Re: [APML] New Image

["Brian Lula" <brianl@polytecpi.com>]

Hi Rob,Tony and Bert,

Thanks for your encouraging comments. Maybe film is the better media for these nasty 
areas. It would probably require less time and the bright stars would really like gems!<g>

Take care, Brian



On 4 Jul 02, at 0:00, Robert Gendler wrote:

> Brian,
> Thats a phenomenal image. All your hard work paid off.
> Rob
> Email: robgendler@att.net
> Web site: http://www.robgendlerastropics.com/
> ----- Original Message -----
> From: "Brian Lula" <brianl@polytecpi.com>
> To: <astro-photo@seds.org>
> Sent: Wednesday, July 03, 2002 10:16 PM
> Subject: [APML] New Image
> 
> 
> > Hi All,
> >
> > We had some email trouble today. I'm resending this one in case in case it
> got "lost".
> >
> >
> > I posted a new image to my website that was the nastiest to process so
> far. I
> > took the CCD images in January but didn't have the nerve or know how to
> work on
> > it til now. It is a deep image of the Cone Nebula/S Monoceros region that
> had
> > severe blooming, lots of RGB hot "specks" and growing frost "snakes".
> >
> > I was going to write this image set off but just couldn't when I thought
> of the
> > time it took to acquire it and the infrequent opportunities I have to get
> a good
> > imaging run.
> >
> > Two images are posted, one is the raw color/b&w combination and the other
> is an
> > "artistic restoration" to remove the artifacts and make it appear more
> > pleasing. Some stars were removed along with the blooming spikes removal
> especially near
> > the huge spike created from S Monoceros.
> >
> > The image is an LRGB of 90:24:24:24 minute exposures respectively built up
> from
> > 5 minute individual exposures using a 20" F/4 newtonian and a Finger Lakes
> > IMG6303E CCD camera. The seeing was about 5-6 and transparency about 8.
> This was
> > done in 2x2 bin mode for all the LRGB frames and has an image scale of 1.5
> > arcsec/pixel.
> >
> > I opted against using a lot of short exposures to eliminate blooming
> because I figured I
> > could build up better SN in the faint areas of the nebulosities with
> reduced readout noise in
> > the combining. I knew though I would have to deal
> > with pretty nasty blooming. The "frost snakes" appeared half way into the
> > exposures and started as pinpoints and grew to the lengths you see in the
> "raw"
> > image. Fortunately they were in areas of relatively uniform brightness
> nebulosity and could
> > be cleaned up relatively easily. The camera has since been repurged.
> >
> > The "artisticly" processed image is at:
> >
> >
> http://www.heavensgloryobservatory.com/Color_Jpegs/conenebFRGB01-6303Eweb.jp
> g
> >
> > The "raw" combined color/b&w image is at:
> >
> >
> http://www.heavensgloryobservatory.com/Color_Jpegs/conenebFRGB04rawcombine.j
> pg
> >
> >
> > Best regards, Brian
> >
> >
> >
> >
> > Brian Lula
> > Polytec PI, Inc.
> > (508) 832-3456
> >
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> 
> 
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Brian Lula
Polytec PI, Inc.
(508) 832-3456

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