h alpha filter

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Bubble Nebula - June 15, 2016 by Joseph Brimacombe
Via Flickr:
Taken from New Mexico Skies with an SBIG STL-11000 camera and 51-cm RCOS telescope on a Software Bisque PME II mount. Red and H-alpha filters were used and the data blended to form the final image.

Rosette-nebula in B/W. Adding Color-information without PS is very hard. This picture is just stacked in DSS. It is a 40min Exposure. The nebula is very hard to photograph because it is a H-alpha region. The IR-filter infront of the Camera-sensors block most of this light so you need much more exposure time to show the whole beauty of this nebula.

Sunspot!

JP Brahic took this photo from France on April 5, 2013. He used a refractor Astro-Physics 155mm F/D 8.5 and a Bassler ACA1300 camera with filter H-Alpha 1A ° to capture the image.CREDIT: JP Brahic

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Jones 1, PK 104-29.1 by hauk sven
Via Flickr:
PK 104-29.1, also known as “Jones 1”, is a very faint, ghostlike planetary nebula in the constellation of Pegasus. This image was taken at the Mayall telescope with the Mosaic camera, with [OIII] (assigned a blue color) and H-alpha (orange) filters. In the image North is up and East is to the left. Imaged August 28, 2009.