This was about two and a half hours with a good dark night on September the 2nd. I have done this one twice before with the last time back in January of 2018 but wanted to see what a bit more data and experience would add. The result was much better I think! Mostly the processing. This version is less saturated and not so blown out.
From July 28th I captured this nebula low in the southern sky. Despite what seemed unsettled air and not the best guiding, the 1 hour 20 minutes of 5 minute subs combined for a nice presentation. A very warm evening with a few shooting stars and near new moon darkness. So nice to out in!
The Omega Nebula – M17 – is visible through binoculars and glorious in a low power telescope. It’s one of our galaxy’s vast star-forming regions. Barely visible to the unaided eye on a dark , moonless night, Messier 17 – aka the Omega Nebula – is best seen through binoculars or low power on a telescope. It’s very near another prominent nebula known as Messier 16, the Eagle Nebula , home nebula of the famous Pillars of Creation photograph. These two closely-knit patches of haze readily fit within the same binocular field of view.
How to see M17. If you want to see deep-sky objects like this one, learn to recognize the constellation Sagittarius the Archer. It’s located in the direction of the center of our Milky Way galaxy; many beautiful star clusters and nebulae can be found in this part of the sky. Luckily, this constellation contains an easy-to-find star pattern, or asterism, in the shape of a teapot. From the legendary Teapot asterism in Sagittarius, it’s fairly easy to star-hop to the Omega Nebula and its companion nebula, M16.
From the Teapot, draw an imaginary line from the star Kaus Austrinus and pass just east (left) of the star Kaus Media to locate M16 and M17. These two nebulae are close together and located about one fist-width above the Teapot.
As seen from the Northern Hemisphere, the Teapot, M16 and M17 are summertime objects. They’re highest up when due south on late August evenings.
When you look at either M16 or M17, you’re gazing at deep-sky wonders in the next spiral arm inward: the Sagittarius arm of the Milky Way galaxy. The M17 Omega Nebula is thought to be around 5,000 light-years away.
I was able to put together just over two hours of five minute subs to come up with this image. Still very little nebula data to work with and the warm weather limits noise reduction but better results than I had two years ago. The Crescent Nebula is a faint emission nebula in the constellation of Cygnus. Shining at magnitude +7.4 and around 5000 light years out, it will require at least an 8″ telescope to see anything visually. In this photo I am only getting the brightest parts in the visual light range.
Low in the southern sky I captured the Eagle Nebula on the 26th with 300 second subs. This image combined exposure time was 1 hour 50 minutes at ISO 800 on a nice dark night. The crop image details the core of this nebula while the wider view is only slightly cropped from my full image at scale.
From Wikipedia edited:
The Eagle Nebula is part of a diffuse emission nebula. This region of active current star formation is about 7000 light-years distant. A spire of gas that can be seen coming off the nebula in the northeastern part is approximately 9.5 light-years or about 90 trillion kilometers long.
The cluster associated with the nebula has approximately 8100 stars, which are mostly concentrated in a gap in the molecular cloud to the north-west of the Pillars. The brightest star is actually a binary star with a mass of roughly 80 solar masses, and a luminosity up to 1 million times that of the Sun.
Images taken by the Hubble Space Telescope in 1995 greatly improved scientific understanding of processes inside the nebula. One of these photographs became famous as the “Pillars of Creation”, depicting a large region of star formation.