Stars M class are most common. About 76% of the main sequence stars in the spectral band of the Sun (class G) are class M stars (red dwarfs), their brightness is so low, that it is impossible to see them with the naked eye, except under exceptional conditions.
Emission nebula in the constellation Orion. It’s around 1,500 ly away from Earth. The shape looks like a fired flame or a torch with an angular diameter of about 0.5 °, visible in the sky near the star Alnitak. The Flame Nebula has a reddish hue in visible light, which is due to the glow of hydrogen atoms at the ends of the giant Orion Molecular Cloud about 1,500 light-years from Earth. Ionized hydrogen atoms glow, during the recombination process (recombination of electrons and atomic nuclei).
The diameter is 4 light years. It surrounds the young massive star HD 37903 of spectral type B2 Ve. The energy of this star illuminates the nebula of molecular hydrogen, which emits near-infrared wavelengths and relatively high surface brightness. New stars are forming in the material from which the NGC 2023 nebula was formed. The gas waves surrounding the star are 5,000 times denser than the interstellar medium. The shock waves stimulate the gas to glow, creating unpredictable forms observed in the nebula.
During processing collected light frames, In my head came up the idea, to present the new photos in a slightly different way. The genesis of the idea is that I worked very long and intensively, to save the collected light frames from delete due to problem with very noisy background. This problem came from a lack of knowledge and lack of experience with working with my CMOS camera. I couldn’t bear the thought that all my laboriously taken light frames, could be lost.
Compared to amateur telescopes, it is literally a wider look with the 200 [mm], F 2.8 lens at a group of objects in the Bernard’s Loop. However the loop itself is not visible on picture (caught small piece in the lower left corner – red cloud), and the main subject of the photo are objects, like the well known M42 nebula in Orion. Next to left NGC 1977 – The Running Man with his small group of stars.
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Astrophotography by Dariusz Krzempek
At some point while using the controller, I noticed that the ESC button wasn’t always working. I lived with it, but after a while, the left Ra button also started acting up and wouldn’t always connect. A red flag went up in my head – something needed to be done. It’s worth noting that the problems appeared right after the warranty period ended… coincidence?
The GOTO controller is extremely convenient and practical to use, when you want to look at interesting night sky objects, with your own eye through the eyepiece mounted in the telescope’s focuser. The ability to quickly select an object using the GOTO controller, is invaluable.
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