IC 1805 - 5.8.2019 at 23.00 - 6.8.2019 at 04.00 Hyvinkää Observation number 85029

Visibility Unclassified

Antti-Jussi Pyykkönen

In the summer, I upgraded my SCT tube to a bigger model after buying a C925 from Ursala. I used the faults of summer vacation days to collimate the tube with laser laser and this picture was supposed to be just a test, but since the stars in the corners were already starting to look pretty good, this now became a complete whole - the first light on the C925.

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Additional information

Observation target
- Deep space object
Designation
- IC 1805
- Näyttävä

Nebulae
- Emission nebula
  
  In an emission nebula the hot stars nearby cause the gas glow. This should not mix with reflection nebula, where the gas is only lit up by nearby stars.
  
  The appearance of a gas nebula is irregular, and the fainter parts of it need bigger instruments to be visible.
  
  Emssion nebulae in Cepheus. The bigger part is composed of the nebulae Cederblad 214 (Ced214) and NGC 7822. The lower round nebula is called Sharpless 170 (Sh2-170). Image J-P Metsävainio.
  
  The Orion nebula. Image Samuli Vuorinen.
  
  In this 4-degree-field there are emission nebulae Sh2-157, Sh2-158, Sh2-159, Sh2-161 and Sh2-162 (or NGC 7635 aka Bubble Nebula) and open clusters M52 and NGC 7510. Image Juha Kepsu.
  
  NGC 281 aka Pacman Nebula. The object is in Cassiopeia. Image J-P Metsävainio.
  
  NGC 896 in Cassiopeia is the tip of Heart Nebula (IC 1805). Image Timo Inkinen.

Technical information

C925, 0.67 Reducer, CEM60, Atik 460, Baader narrowband filters, total 10.9h light in 10-15 minute increments.

Comments: 3 pcs

Henrik Heikkinen - 22.8.2019 at 08.52

En näistä tiedä paljoa, mutta upea syvyysvaikutelma!

Tapio Lahtinen - 22.8.2019 at 09.22

Hyvältä näyttää.

Lauri Turunen - 25.8.2019 at 16.00

Eipä taida C925:lla enää tuon tarkemia kuvia saada! Itsellänikin oli aikaisemmin C925:n juuressa CEM60, mutta ainakaan kyseisen yksilön sähköpuoli ei sietänyt Lapin kylmyyksiä, joten muuten asiallinen jausta meni vaihtoon.

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IC 1805 - 5.8.2019 at 23.00 - 6.8.2019 at 04.00 Hyvinkää Observation number 85029