Re: [APML] OT: Deep M81 (12 Hours) (My image...really!)

["Kevin Wigell" <kwemail@twcny.rr.com>]

Juan, that did the trick for me. Now I really have my work cut out for me 
<g>.

Kevin Wigell
www.kwastronomy.com

----- Original Message ----- 
From: "Juan Conejero" <pleiades2004@pleiades-astrophoto.com>
To: "Kevin Wigell" <kwemail@twcny.rr.com>; "Discussion of Film 
Astrophotography" <astro-photo@seds.org>
Sent: Sunday, March 13, 2005 7:56
Subject: Re: [APML] OT: Deep M81 (12 Hours) (My image...really!)


> Hi Kevin,
>
> Perhaps you are saving a RGB color FITS with PixInsight. Very few programs 
> out there are able to work with multichannel FITS. If this is the case, 
> try extracting the luminance, save it, and load it into CCDSharp. Anyway, 
> you should not deconvolve the chrominance of your images.
>
> If you are already saving a grayscale image as FITS with PixInsight, maybe 
> CCDSharp is not able to deal with some header keywords. Try saving the 
> file in 16-bit signed integer format. This is the most widely used FITS 
> format.
>
> Another problem can be an embedded ICC profile. If when you save the FITS 
> you see the "Embed ICC Profile" check box checked, uncheck it. Again, this 
> is an advanced option that CCDSharp probably will not be able to deal 
> with.
>
> PixInsight relies on the CFITSIO library by NASA/Goddard, so full 
> conformance with the FITS standard is guaranteed.
>
> Hope this helps; please let me know.
>
> Juan
> __________________________________________________________________
>
> Juan Conejero, Pleiades Astrophoto Team
> PixInsight Home Page: http://pleiades-astrophoto.com/pixinsight/
> __________________________________________________________________
>
> ----- Original Message ----- 
> From: "Kevin Wigell" <kwemail@twcny.rr.com>
> To: "APML" <astro-photo@seds.org>
> Sent: Sunday, March 13, 2005 1:28 PM
> Subject: Re: [APML] OT: Deep M81 (12 Hours) (My image...really!)
>
>
>> George, I thought this would work for me, but alas, not. When I open a 
>> tiff image in PixInsight and then save it in FITS format, I'm not able to 
>> open the FITS file in CCDSharp. I get "An unknown error occurred while 
>> accessing (filename)" from CCDSharp. But, I am able to open the very same 
>> FITS file in Photoshop CS.
>>
>> There are quite a few options in PixInsight for FITS options when saving 
>> (8-bit unsigned integer, 16-bit unsigned integer, 16-bit signed integer, 
>> etc), none of which mean much to me. Does anyone have any idea what the 
>> problem might be (besides me)?
>>
>> Kevin Wigell
>> www.kwastronomy.com
>>
>> ----- Original Message ----- 
>> From: "George Anderson" <tillerman1@videotron.ca>
>> To: "Kevin Wigell" <kwemail@twcny.rr.com>; "Discussion of Film 
>> Astrophotography" <astro-photo@seds.org>
>> Sent: Saturday, March 12, 2005 22:21
>> Subject: Re: [APML] OT: Deep M81 (12 Hours) (My image...really!)
>>
>>
>>> Hi Kevin
>>>
>>> I believe that pixinsight will allow you to save a file in FITS format.
>>> So you could read whatever fileformat you have into pixinsight and then
>>> save it as fits.
>>>
>>> George Anderson
>>> Montreal Canada
>>>
>>> Clear skies and good health
> 


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