M83 Galaxy - Testing the QHY183M camera
steemstem·@terrylovejoy·
0.000 HBDM83 Galaxy - Testing the QHY183M camera
 *700 individual exposures of 5 seconds each were stacked for this image for a total exposure just under 1 hour. The camera was a QHY183M (M for Monochrome) and was attached my C14 operating at a focal ratio of about 7* In the near future I'm planning to post a review of the QHY183M monochrome camera. As part of that I've been testing the camera on different objects. One of the subjects I have been photographing is galaxy M83 in the constellation of Hydra. This galaxy is "just" 15 Million Light years away which puts in the galactic neighborhood as shown in the diagram below. It belongs to the Centaurus Galaxy cluster which got a recent @steemstem mention in @lemouth 's [article](https://steemit.com/steemstem/@lemouth/is-standard-cosmology-challenged-by-the-structure-of-the-galaxies) discussing how satellite galaxies organize themselves around their parent galaxies (and implications on the Standard Cosmology model). Incidentally, the name M83, is short for Messier 83, named after a French amateur astronomer, Charles Messier, who cataloged it in the 1700's.  *I did this diagram for a friend a few years ago for a book he was writing. Even though he did not use it, I think it is still interesting and shows the arrangement of large galaxies in the vicinity of our own Milky Way Galaxy* So what about a color image? Well I'm working on that, last night I started acquiring color images using a colour camera but not only was I thwarted by cloud, but it appears dew formed on the telescope optics as the images got dimmer as the night progressed. Anyway, here is what I got. I will need a few more exposures to get this to a point where I can combine it with the mono image above.  *320 x 5 second exposures with the same setup as above, but using the color version of the QHY183.* **NOTE** : All the images are the author's, please credit @terrylovejoy if you plan to use them in your own posts
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