I just bought an Astronomik filter drawer off A-mart, and now have a question about filters. Given I'm using an older Parallel ST8 (non-E) NAGB, with and 80f/6 refractor, I'll have to guide through the filter, wich will likely make it difficult to find and calibrate on a guide star. I borrowed a Schuller Ha filter from an observing buddy, and screwed it into the nosepiece, just to see if I could do it at all. I chose the elephant trunk as a target, because It had and abundance of great guide stars in the area, and should make an easy target. Here's a median combine of 8 X 20min subs.
Now, I'm wondering....Wich would be better, a filter like the Astrodon wich has a narrower passband, but allows a higher percentage of light at those particular wavelengths through the filter, or a filter like the Astronomik that lets a smaller percentage of light at a particular wavelength through, but has a wider passband allowing more wavelengths to pass, or something in-between the two, like the Schuller?
Now, I'm wondering....Wich would be better, a filter like the Astrodon wich has a narrower passband, but allows a higher percentage of light at those particular wavelengths through the filter, or a filter like the Astronomik that lets a smaller percentage of light at a particular wavelength through, but has a wider passband allowing more wavelengths to pass, or something in-between the two, like the Schuller?
