In the photo posted below, you will see some of the lessons I have learned the hard way.
First, never shine a light at the camera, not even a red one! The seals on my camera are very good, so we believe that the light leak is in the viewfinder.
second, even when shooting piggy back and auto guiding through the scope (Giant Easy Guider and an ST-4), you still need to lock the mirror down or, don't allow the shot to cross the meridian.You get double stars! These are hard lessons to learn when one is standing outside on a cold winter night! *L*
Witchhead nebula(poorly framed). Elitechrome 200,
Spiratone 400mm f/6.3 lens The lines you see where an artifact of the scan process.
First, never shine a light at the camera, not even a red one! The seals on my camera are very good, so we believe that the light leak is in the viewfinder.
second, even when shooting piggy back and auto guiding through the scope (Giant Easy Guider and an ST-4), you still need to lock the mirror down or, don't allow the shot to cross the meridian.You get double stars! These are hard lessons to learn when one is standing outside on a cold winter night! *L*
Witchhead nebula(poorly framed). Elitechrome 200,
Spiratone 400mm f/6.3 lens The lines you see where an artifact of the scan process.
Attached Image:
Don Spencer
http://members.cox.net/ecdon/astrophotography.html
