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This one definitely qualifies as DIM!
Many have exposed for tens of hours to capture this object. I had
attempted this one from
the city
with very mixed results due to short exposures and light pollution. In
order to bring out the Squid with much a shorter exposure, I employed
some of
the same techniques I used to bring out the star stream surrounding NGC5907.
Some very laborious mask building with a lot of blurring and contrast
enhancing was used to make the Squid visible in the mask. The mask was
then applied to several of the initial stretches to enhance the nebula. The Squid (Ou4) is a faint reflection nebula at the core of the Flying Bat Nebula (I have no idea how it got that name) SH2-129 in Cepheus. Once considered a challenge object to image, modern equipment and filters make the data relatively easy to capture as can be seen in the four hour exposure below. The real challenge is to tease out the very faint details while processing the data. Click on the image to see a higher resolution version, then click again on the image to return to this page. |
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