Newest observations

Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

IC 1396 - 20.10.2019 at 20.00 - 20.10.2019 at 23.00 Rovaniemi Observation number 86144

Visibility V / V

Lauri Turunen, Corona Borealis, Rovaniemi

The new field of view of the RedCat51 telescope is just a passel to capture this very large emissions fog. The exposure accumulated for a total of almost 3 hours, which was great enough to capture this moderately bright subject. On previous shots, an unfortunate number of underexposures were out of focus, so I decided to adjust and lubricate the Skyguider’s wheel. This was clearly beneficial, as now all the exposures were excellent.

In the post-editing of the final image, I gave myself a bit of artistic freedom and thus the end result is a bit "unorthodox" in terms of colors;)

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • IC 1396
    • Erittäin näyttävä
  • Constellation
    • Cepheus
  • Darkness
    • Average
  • Seeing
    • Average
  • Nebulae
    • Emission nebula info

      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

William Optics RedCat51, Canon 6Da, Astronomik CLS, iOptron Skyguider Pro, Lacerta MGEN-II, ZWO Mini Guide Scope. Pixinsight, Lightroom. 58 x 180s, ISO1600.

Comments: 2 pcs
Vesa Vauhkonen - 22.10.2019 at 15.47 Report this

Hieno kuva! - Miten tuo Helical- focuser toimii painavan kameran kanssa? Putken mukana taitaa tulla Bahtinov- maski, joka helpottaa fokusointia?

Lauri Turunen - 22.10.2019 at 21.02 Report this

Putken mukana tuleva Bahtinov on todella toimiva ja sen ansiosta fokusointi helikaalilla onnistuu hyvin, tosin hienosäätö on hivenen hankalaa, muttei lainkaan mahdotonta. kameran painolla ei ole vaikutusta fokusointiin. Sopivan kirkkaan tähden ja Bahtinovin ansiosta tarkan fokuksen saanti kestää vain pari minuuttia. 

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.



characters left

By sending in this comment I confirm, that I've read and understood the the observation system's privacy policy.