NGC 7022 - The Iris Nebula
This is the reflection nebula NGC 7023 aka the "Iris Nebula":
Clear skies have again become quite rare and I decided to take on a new object and postpone imaging for this one to next year since it starts moving into the light dome of the city.
I will update the image then, but I thought you might like to see it, even if I expect it to become a little more spectacular.
The Iris Nebula is about 1,300 lightyears away from us in the constellation Cepheus. Unlike the Elephants Trunk, it is not emitting any Light by itself but reflects the light of the bright star that lies inside it. Where the nebula is not lit by the star, it blocks out the light of the stars behind it. You will see the brownish dark part of it, after I collected more light.
For the time being, this is the result of 50 exposures at 300s and 17 exposures at 900s (that was more a test but it went quite well). So you are looking at a total exposure time of 8h and 25m.
|Exposure:||50 x 300s, ISO800 + 17 x 900s, ISO800|
|Camera:||Canon EOS 1100D, modified + CLS CCD Clipfilter|
|Telescope:||10" GSO RC, 2000 mm|
|Guiding:||OAG with Lodestar and PHD|
|EIP:||Fitswork and Gimp|
|Date:||14., 16. and 18.08.2012|