[APML] Going Crazy @ f/22!

["John Boudreau" <jeboud@mediaone.net>]

Hi all,

While most of you were enjoying the aurora tonight, I've been on my computer
killing time on a cloudy night ;o(

I reshot NGC7662 recently, and since it's an object with such a high surface
brightness, I decided to get crazy! (Well, actually I already was <g>) I
attached a 2x teleconverter to my OM1, and exposed Fuji Provia 100F for 2
hours @ f/22! Even then, it's slightly underexposed but it's a better
overall result than my previous 30 minute version at f/11:
http://people.ne.mediaone.net/jeboud/ngc7662.htm

On another night I tried the same setup on the core of M42 for an 80 minute
exposure. Clouds limited me to only 1 successful exposure, and caused a few
minor guiding problems so a reshoot is planned, along with some shorter
exposures to capture some Trapezium detail. But I'm still happy with it. For
now <g>:
http://people.ne.mediaone.net/jeboud/m42_core.htm


Realistically, stacking two or more f/11 exposures would probably beat these
shots. And a good CCD camera for these subjects is still a few years off for
me. But it was interesting giving f/22 a try!


John Boudreau
jeboud@mediaone.net
http://people.ne.mediaone.net/jeboud/astro.htm


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>