Post by Gregg1956 on Jan 22, 2016 14:52:44 GMT
Jones-Emberson 1 is a planetary nebula about 1600 light years away, in the constellation Lynx. Let's take a look at two different images...
Credit: Bob Franke
Credit: Bob Franke
Credit: Bob Franke
Credit: Bob Franke
These are both by the same astrophotographer, both of the same PN, so why are they different colors? Because the green one was shot with a narrow band filter, the red one with just natural colors (unfiltered).
Filters are available for telescopes that filter out certain bands of light and allow others to come through. I'm no expert in this area, so here's an article about it:
Some Available Light Pollution And Narrow-Band Filters
Be sure to visit Bob Franke's site. He's an awesome astrophotographer. His work has been published often, including several times on NASA's APOD, like this one.
PK 16431.1.kmz (710 B)
Filters are available for telescopes that filter out certain bands of light and allow others to come through. I'm no expert in this area, so here's an article about it:
Some Available Light Pollution And Narrow-Band Filters
Be sure to visit Bob Franke's site. He's an awesome astrophotographer. His work has been published often, including several times on NASA's APOD, like this one.
PK 16431.1.kmz (710 B)
