This is a very dark sky site in western Queensland.
As I process the images I’ll post them onto my website beginning with capturing the faint Cat’s Paw and Lobster nebulae in the area around the sting of Scorpius.
At this time of the year Scorpius and Sagittarius and the whole band of the Milky Way is at the zenith, it gives you plenty of time to take lots of images.
For this weekend, I decided to do just wide field images of the Milky Way using a Canon 70D camera and Canon 70-200 f2.8 lens. The camera was attached to the tracking Meade 10inch telescope that was polar aligned in the observatory.
Most of the images were an exposure time of 2-3 minutes and ISO2000. I captured at least 20-30 frames and also corresponding dark frames for stacking. Images were stacked in Deep Sky Stacker (DSS) and processed in PS.
When looking at the star rich areas of the Milky Way you come across some very dark patches among the stars. I have since found out they are called Barnard Objects after a man called Edward E Barnard who saw them as ‘holes in the heavens’.
They are dark nebulae where so much interstellar gas and dust obscures the light from the stars that are behind it, it’s very similar to what you see with the Coalsack Nebula near the Southern Cross (Crux).
I have been coming across these objects when doing wide field images of the milky way for some time now and have been intrigued by them, so from now on I’ll try and number them on my images.
To find out more about these dark objects please go to the Harvard Education website link: Dark Markings in the Sky
https://lweb.cfa.harvard.edu/~agoodman/astro208/articles/Barnard.html
(Please note, unfortunately a lot of the links are now not in use, I’ve only included the link because it gives the general information)
This is another very useful and excellent website where you can download a chart to use with your images at:
https://exhibit-archive.library.gatech.edu/barnard/