Re: [APML] M31 pentax67 e200 FSQ-106...

[Wei-Hao Wang <whwang@gmail.com>]

Hi,

Jeff's image is absolutely beautiful.  

It may not be true that the dynamical range of slides is too small
of objects like M31.  I found that even a +2 pushed Provia 400F 
could well record the details in the core and the outer spiral arms.
To avoid a saturated core of M31, we certainly cannot use too 
long an exposure time.  In many cases, this will make the outer
spiral of M31 look very faint on slides.  However, modern slides 
like Provia 400F, E200, E100S have very good S/N in the shadows.
The details in the outer part of M31 can be easily brought out by
digital nor non-digital processes.

When I said "digital process", everybody knows what I meant.  
How about "non-digital process?"  Last week I posted my 
non-digitally processed M31on astromart:
http://www.astromart.com/forums/viewpost.asp?forum_post_id=240901&poll_id=&news_id=&page=
How do you think?

Cheers,

Wei-Hao

-- 
________________________________________________________________
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
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