[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

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