Re: [APML] Deconvolved the Cocoon

the flare is my "schuler reflection" that I've always had with that filter

that reflection around bright stars has been a feature of that filter throughout the time I've owned it (2002).

----- Original Message -----

From: Stuart Heggie

To: Discussion of Film Astrophotography

Sent: Sunday, November 21, 2004 6:47 AM

Subject: Re: [APML] Deconvolved the Cocoon

Richard, definitely improved! I caught the flip error but assumed it was mine that was backwards! Glad that's sorted out. There is a bit of a flare below the bright stars - did that get pointed out already?

Stuart

----- Original Message -----

From: Richard Crisp

To: ap-gto@yahoogroups.com ; ccd-newastro@yahoogroups.com ; ccd@listserv.wwa.com ; Discussion of Film Astrophotography

Sent: Saturday, November 20, 2004 12:58 PM

Subject: [APML] Deconvolved the Cocoon

Thanks for the comment Matt and I agree with you and the others that
suggested I try some deconv.

I had not yet installed AIP4WIN on my new imaging laptop, but with the
encouragement from you and others to do the deconv, I did the installation
this morning and ran two passes of Richardson Lucy deconv.

I also corrected the mirror flip of the image: no one caught that it was
mirror imaged from the AO7!

Anwway I fixed and uploaded the image. I think it definitely looks better
now.

Thanks for the encouragement. I think it has the Pizzaz now....

http://www.narrowbandimaging.com/ic5146_cocoon_18inch_page.htm

rdc

----- Original Message -----
From: "Matt Thomas" <groupmail@astromatt.com>
To: <ccd@listserv.wwa.com>
Sent: Saturday, November 20, 2004 8:37 AM
Subject: Re: [CCD] IC5146 Cocoon Nebula in Halpha (18" cassegrain)

> Richard,
>
> Very nice. I'm sure some decon would sharpen things up!
>
> -Matt Thomas
> http://www.astromatt.com/
>
> Saturday, November 20, 2004, 3:46:14 AM, Richard Crisp wrote:
>> this was shot at 0.64 arc-sec/pixel from the 18" Classical Cassegrain
>> (F=5760mm, f/12.46) with an IMG6303E camera binned 2x2
>
>> the image is 11 x 20 minutes through a Schuler Halpha filter (9nm FWHM):
>> 3hrs 40min total
>
>> Guiding was via AO7 /ST7e via an RCOS Dichroic Beam Splitter
>
>> I didn't do any deconvolution, perhaps I should have: what do you think?
>
>> http://www.narrowbandimaging.com/ic5146_cocoon_18inch_page.htm
>
>> Richard
>
>

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