Film/Color Issues

Hi all! I'm relatively new to the astrophotography world. I've been taking a lot of piggyback astrophotos with my OM-1 mounted on my Orion SVP 8". My last round of photos of the Orion region turned out really well, but I am still not picking up any color in the nebula or stars (like oranges and reds). I used Kodak Royal Gold 400 this last round, and most of my exposure times were around 15 minutes. If I use slide film, will I be able to resolve the colors? Any suggestions would be appreciated.

Michael

Michael,
The Royal gold you are using is very poor in the reds. My suggestion would be to use E200 slide film, or Kodak Supra 400 (the older version, which has been discontinued, but can still be bought at unique photo...ask for Kim). Here is a shot taken earlier this year with Elitechrome 200...
http://members.cox.net/ecdon/orion.html
BTW...15 minutes should be fine...