by Richard Crisp
This is three exposures of 30 minutes though a 6nm AstroDon Ha filter using an IMG6303 and AP180EDT at f/6.75
The bright star just out of the field of view makes this a bit difficult to frame just the way I'd like. I rotated the camera about -45degrees from the origin and pushed the star just out of the FOV on the top side.
It would be nice if that star was a bit further away but I bet hundreds of astrophotographers have cursed that very star over the years, if not thousands.
conditions were not bad but not good either. The key thing is that it was clear. Humidity was higher than I'd like and there was some wispy haze passing through. Seeing was soft. Still after what seemed to be an eternity of terrible weather between Christmas and now, it was great just getting a chance to image the past two nights.
http://www.narrowbandimaging.com/ic443_ap180_6303_ha_page.htm
I expect to shoot more data and some color data for this target. There's a lot of [SII] in in but only a small amount of [OIII] from what I saw in my test exposures last night. Maybe NIR is a good candidate too?
Posted on sf-bay-tac Feb 01, 2005 08:12:52 PT
Converted by report.pm 1.2 Feb 01, 2005 19:43:06 PT