All of the images were taken with an 80mm Lunt Solar Telescope and an Imaging Source video camera. The image at the bottom was a composite of 25 of the best images out of 100 and had no further magnification. The second image was a composite of 50 of the best images out of 200 and was magnified 5x with a Televue Barlow. The top image was magnified 5x with Televue Barlow and involved 50 stacked images out of 200.
The clouds are moving in, so imaging on this nebula has ended. Three narrow band filters were used and were assigned RGB colors based on what is called the Hubble palette. This was tweaked by removing some of the green coloration while emphasizing blue. A total of 35 thirty minute images were stacked, for a total imaging time of 17.5 hours.
These are the Tadpoles of IC-410. They seem appropriate for the New Year when we are celebrating a fresh start or a new beginning. This emission nebula lies about 12000 light years away, and the Tadpoles are about 10 light years long. This is a stacked composite of 17 half hour h-alpha exposures taken through my 5 inch Astro-Physics Starfire refractor with a .75 focal reducer.
My earlier greyscale photo of this nebula was derived from 15 one hour exposures through an H-Alpha filter which were used as the red channel in this color image.. An additional 11 half hour images were taken through an OIII filter for the blue channel. An RGB color image usually uses three different monochrome images. In this case, however, the third color (green) was synthesized from the first two red and blue channels. That saves the time that would be necessary to take images through a third filter and not much is lost since most of the detail in this nebula can be found in the H-alpha and OIII wavelengths. It would be ideal to have a few more images to stack for a smoother image, but this nebula is now in an area of the sky where long imaging sessions are no longer feasible. I may have to wait until next year to obtain more depth in this image.
This is my first attempt at producing a drone music video (30 seconds). The website’s compression algorithm seems to have added a little quirkiness that actually adds rather than subtracts for those who are not obsessive perfectionists. 🙂