SH2-200
(
Sharpless 200
)
This planetary nebula offers a lot to large telescopes and smaller ones with a wider field of view. The nebula responds mostly to the hydrogen-alpha filter and is weak with the standard color RGB filters. So I had to blend the H-Alpha data into the red and blue channels to create a nice HA-RGB image. Interestingly there is a larger outer halo around the brighter part of the nebula but it is very faint and needs the exposure time to capture it. The oxygen III filter picks up very well but the sulfur II is very weak. That said, a good narrowband image can be done. The narrowband image was taken with the Sagrada remote observatory.
For a complete list of the Sharpless Catalog visit my main site at
http://www.sharplesscatalog.com
Taken with TBM 152mm Refractor and ST-10 XME
Images by Dean Salman