Here are The Tadpoles (in IC 410) in H-alpha. I messed up the color of the HA-RGB this evening so I leave it in H-alpha greyscale with RGB stars. I need some more data to get more detail and color....

....and finally with a bit of color and a inked to the full resolution images on flickr....




...and a crop around the little swimmers...



IC 410 is an emission nebula about 10000 ly away. It contains "The Tadpoles" which are aggregations of more dense gas. IC 410 partly covers the star cluster NGC 1893

20 x 300 s with Omegon 12 nm H-alpha filter @ ISO 1600
30 x 180 s in full color RGB @ ISO 800
Pentax K3ii (unmodified) and TS apo 130/7

Just awesome! Bravo! I was wondering how H alpha would work with an unmodified sensor. Looks like it works like a charm!

Thank you! I wouldn't say like a charm but it is possible at least. If I had to guess I would say that maybe it a piece of more exposure time than with a modified camera but as long as I can go with 5 minutes exposure its ok for me. Another thing is that I only have a 12nm filter. More narrow filters should make it more heavy to get reasonable results. And the processing is a bit more challanging.

But in the end it is worth it for me. I had imaged IC 410 in 2016 with my smaller 80/480 apo. The tadpoled could be distinguished but only very weak though Inhad 5x more integration time - it was no comparison to the Ha-result. Maybe I can do a combination of the old RGB and the new Ha data to show the difference.

very nice!