M45 and NGC 1499 - 26.11.2021 at 22.30 - 27.11.2021 at 02.00 Järvenpää Observation number 102591

Copyright © 2021 Eemil Pietilä. All rights reserved.

Visibility III / V

Eemil Pietilä, Ursa (Etelä-Suomi)

I photographed this target pair through a 50mm lens. At first I was skeptical about the weather, but after 10pm the weather became clearer and I decided to put the camera to shoot. After a while, I realized that the camera battery was exhausted, so I replaced it with a new one. But it didn’t take long for me to come back again and this time the power bank battery was running low, so I went looking for a new one and found one. In order not to solve it with such small problems now, the fuses on the cake burned over the whole house, which meant that the laptop no longer received power outside and that too flashed after a while. At this point, the exposure had accumulated for about two and a half hours, so I decided to just take the calibration pictures and stop shooting that night.

This description has been automatically translated from Finnish. Click here to see the original text.

0 2

Additional information

Observation target
- Deep space object
Designation
- M45 ja NGC 1499
Constellation
- Perseus

Weather
- Ulkona oli n. -8 astetta eli aivan liian kylmä sää kameran äärellä päivystämiseen. Muutamia pilviryhmiä vaelteli kuvauksen alkupuolella etelätaivaalla.
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.
- Reflection nebula
  
  Reflection nebula is gas only lit up by nearby stars. It should not be mix up with emission nebula, where hot stars nearby cause the gas glow. But then reflection nebulae are visible in the same areas with emission nebulae. The appearance of reflection nebulae is irregular, and many of them need bigger instruments to be visible.
  
  Reflection nebulae are glowing blue around the stars of Pleyades. Image Juha Parvio.
  
  The blue glowing reflection nebula NGC 1333 around the bright star is in Perseus. Image Timo Inkinen.
  
  The bluish reflection nebula NGC 2023 is located lower left from the Horsehead Nebula. The Horsehead Nebula itself is a dark nebula in the front of red emission nebula IC 434. In the left side there is NGC 2024 aka Flame Nebula. Image Samuli Vuorinen.
  
  NGC 7538 in Cepheus is a combination of reflection and emission nebula. Image Timo Inkinen.
  
  Rflection nebulae (LBN 550, 552 and 555) and dark nebulae (LDN 1228) in Cepheus. Image Juha Kepsu.
  
  Reclection nebula vdB 141 in Cepheus. Image Tero Turunen.

Technical information

Canon EOS 450D (ir mod), 50 mm, f / 3.2, ISO 1600, 30 sec x 300, 30 sec x 40 (dark), 30 flats

Send a comment

Comments are checked and moderated before publication If you want to contact the observer directly about possibilities to use these images, use the Media -form.

Desktop version of the site Show the mobile version
Site development by the Skywarden team and E. Bruus.
© 2011- 2022 Ursa Astronomical Association. All rights reserved.
Privacy policy