Re: [APML] Orion panorama

["Robert Gendler" <robgendler@worldnet.att.net>]

Wei-Hao,
Tremendous effort and a masterpiece of a result.
You can use the minimum filter the shrink the stars
in the region where the stars are larger.

Rob Gendler
email: robgendler@att.net
Web Site: http://www.robgendlerastropics.com
----- Original Message ----- 
From: "Wei-Hao Wang" <whwang@gmail.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Wednesday, January 12, 2005 6:23 PM
Subject: Re: [APML] Orion panorama


> Thanks to everyone for the comments.
>
> Paul, thank you very very much for pointing out this.  It is not an
illusion.
> It's an artifact that I didn't quite notice.  The lower 2/3 of the image
was
> scanned about a year ago by EPSON 1620 at 1600 dpi.  The upper 1/3
> was scanned this month by EPSON 4870 at 3200 dpi and down sampled
> to 1600 dpi.  I know that the 4870 results are sharper than the 1620 ones
> but I didn't know it is still so noticeable in a 0.1x image.  I will
> think about
> a way to solve this, hopefully without rescanning all the old frames.
>
> Cheers,
>
> Wei-Hao
>
>
> On Thu, 13 Jan 2005 01:28:36 +0800 (CST), Paul Ng <paulimer@yahoo.com.hk>
wrote:
> > Just one question for now: I'm wondering why the stars
> > at the north are finer than those in the south? Or it
> > is just an illusion?
>
> -- 
> ________________________________________________________________
> Wei-Hao Wang  :)
>
> Institute for Astronomy at University of Hawaii
>
> Address:
> 2680 Woodlawn Drive         Personal Website:
> Honolulu, HI 96822             http://www.ifa.hawaii.edu/~wang
> ________________________________________________________________
> _______________________________________________
> Astro-Photo mailing list
> Astro-Photo@seds.org
> http://seds.org/mailman/listinfo/astro-photo

_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo