Finally had a chance to catch up with some processing this weekend.
Firstly- here’s a widefield shot including the Soul nebula and the Double Cluster from 4th December. This is taken from the best 70% of two hours of data using vintage 135mm lenski on a 600d and Star Adventurer, with the usual set of calibration frames.
Next up here’s a Ha and Oiii from 1st December on the Heart. This is from 14×10 mins of Oiii and 30x 10 minutes of Ha. I should have done them the other way around as the Ha is a stronger signal, but I had the Oiii in to start with. I’ve used an “HOO” palette for this- feeding the Ha into the Red and then the Oiii into both Blue and Green, with the Blue favoured for no other reason than that I quite like the purplish hue it gives.
I’ve enjoyed messing about with the Starnet++ programme lately- so here’s a starless version:
Finally, I think at times I’m guilty of getting too involved with the process of putting these images together and losing track of the incredible size and structure of these objects and the miracle of being able to take pictures of the them from my back garden. So here’s a crop of Melotte 15, the Open Cluster at the “Heart of the Heart”. Our estimate is that this nebula is 7,000 light years distant from Earth and has a diameter of 107 light years across. Using the pixel scale on the original photo (23 pixels=1 light year) I’ve done a (very) rough approximation of our Stellar Neighbourhood around the nebula structure in the middle of the cluster. What would our night sky look like if we had this in the middle of it? Would it have changed our biology, our myths, our history? For sure, it’d make for some pretty cool photos…
(Edit) Quick request from the WhatsApp group – here are the Ha and Oiii that the shot was built from: