M45 – Pleiades

The Pleiades also known as the Seven Sisters and Messier 45, are an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. It is among the star clusters nearest Earth and is the cluster most obvious to the naked eye in the night sky.

The cluster is dominated by hot blue and luminous stars that have formed within the last 100 million years. Reflection nebulae around the brightest stars were once thought to be left over material from the formation of the cluster, but are now considered likely to be an unrelated dust cloud in the interstellar medium through which the stars are currently passing.

Plejady / Pleiades - M45
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NGC 2264 – Christmas Tree Cluster / Collinder 112

Object is located in the Monoceros constellation and are located about 800 parsecs or 2,600 light-years from Earth. NGC 2264 is the location where the Cone Nebula, the Stellar Snowflake Cluster and the Christmas Tree Cluster have formed in this emission nebula. For reference, the Stellar Snowflake Cluster is located 2,700 light years away in the constellation Monoceros. The Monoceros constellation is not typically visible by the naked eye due to its lack of colossal stars.

NGC 2264 – Christmas Tree Cluster / Collinder 112

Źródło: https://pl.wikipedia.org/wiki/NGC_2264

Unfortunately, the source photos contain a lot of noise. Probably all because of the unusual ISO that I set in the camera and other option that has been turned on. I’ve been experimented and realized that the settings I had on the camera definitely sucked. Today I think that I know, what is the key steps to taking good photos on my Canon.

  • Photographs (Oct. 2019) has been taken at Zwardoń.
  • Equipment: Canon 6D, Newton 100/200 [mm], comma corrector, NEQ6Pro., MGen II autoguider.
  • Composition: APP
  • Processing: Raw Therapee + GIMP + dodatki (Linux)
  • Lights: 8 x 479[s], ISO 1000
  • Darks, Bias, Flats, DarkFlats

M33 / NGC 598 – Triangulum Galaxy

Two different locations, more than 200 km apart. Two different telescopes, different size, focal length, light. Two different tools for collecting photons with completely different parameters.

Until now, my computer didn’t really have much to count, but everything changed when I get idea to try, to stack two totally different data sets together. I like such challenges. I’ve spent a lot of time on it with processing stack. The average of time consumed with one single stack processing, took me around 6 hours. It was test stacks + experiments…. I’ve lost in time how many there were, hours or maybe days spent only for the processing of the data itself. Anyway, the power meter count what it wanted and I will pay for this later.

An interesting fact for me was, that the result stack reached a resolution of 23k x 23k [px], and its size was of 6.3 GB. Displaying such an image greedy consumed ¾ from the available memory of my computer. Processing such a photo was a bit tiring, after cropping it was better, but the final .png file with photo, was just over 300MB in the resolution of 9085 x 6950 [px].

M33 / NGC 598 – Triangulum Galaxy, Galaktyka trójkąta

Well…. I must admit that I had a lot of fun with it and a lot of side text was written during processing of stack. Something will come of it.

About the galaxy itself

The Triangulum Galaxy is a spiral galaxy 2.73 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC 598. The Triangulum Galaxy is the third-largest member of the Local Group of galaxies, behind the Milky Way and the Andromeda Galaxy. It is one of the most distant permanent objects that can be viewed with the naked eye.

Source: https://en.wikipedia.org/wiki/Triangulum_Galaxy

Location 1: I’ve collected light frames with few different sessions. Photos taken on 2019 at Zwardoń and Bieszczady during PTMA rally.

Equipment: Canon EOS 6D, SkyWatcher Newton 1000/200 [mm], F5, coma corrector, NEQ6Pro.,

Composition: Astro Pixel Processor,

Processing: GIMP + plug-ins (Linux).

Location 2: Photos collected at 9.2020 near Bielsko-Biała.

Equipment: Newton 1200 / 250 [mm], coma corrector, Atik Horizon CEMOS camera, NEQ6Pro.

  • Stack processing: APP
  • Photo processing: Raw Therapee + GIMP + plugins (Linux)
  • Lights: 340 x 40[s]
  • Darks, Bias, Flats, DarkFlats

M101 / NGC 5457 – Pinwheel Galaxy

is a face-on spiral galaxy distanced 21 million light-years (six megaparsecs) away from Earth in the constellation Ursa Major. M101 is a large galaxy, with a diameter of 170,000 light-years. By comparison, the Milky Way has a diameter of 100,000 light years. It has around a trillion stars, twice the number in the Milky Way. It has a disk mass on the order of 100 billion solar masses, along with a small central bulge of about 3 billion solar masses.

Source: https://en.wikipedia.org/wiki/Andromeda_Galaxy

Pinwheel Galaxy (M101 / NGC 5457)

A good example showing how a coma mirror can break a nice picture. I’ve hope, that the coma corrector I will buy in the coming week, will eliminate the above mentioned optical defect in the entire camera frame.

M101 / NGC 5457 - Pinwheel Galaxy - 50% crop
  • Photos taken at May 2020,
  • Equipment: Canon EOS 6D, CT10 Newton 1200/250[mm], F4.8, NEQ6Pro.,
  • Composition: Astro Pixel Processor,
  • Processing: GIMP + plug-ins,
  • Lights: 81 x 120[s], ISO 1600,
  • Correction frames: Flats, DarkFlats, Darks, Bias