Messier 39 (M 39)

Introduction | Map | Find/Identify | My Own Photos | My Own Observations | References

On this page I collect my observations of the open star cluster M 39 in the constellation Cygnus/Swan.

 

Introduction

The open star cluster M 39 in the constellation Cygnus/Swan is more an objects for binoculars, whereas Stoyan and Karkoschka have different opinions about the look in the telescope. For me, it looks like a triangle...

Size: 31' (Stoyan) - about the size of the moon
Distance: 1,060 Light years (Stoyan)
Rating: * (Stoyan)

 

Map

The open star cluster M 39 on top of Cygnus, M 29 is also indicated (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

 

Find/Identify

Find: First of all, it is best to look for the "swan triangle" (blue lines), which lies in the West in winter, as shown on the map below. The bright star Deneb at the top of this triangle is the most striking one. Below it lies the star Gamma Cygni. If you draw a slightly oblique line from it to Deneb and extend it by about the same length again to form an obtuse triangle (both lines in red on the map), then the open star cluster M 39 in the constellation Cygnus/Swan lies in the upper corner of the triangle. This reads more complicated than it is!

Identify: If you now see a somewhat triangular large star cluster, then you have already found M 39 and identified it! (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

 

My Own Photos

eVscope

           

M 39 - Feb 5, 2020

 

M 39 - Feb 6, 2020

   
   

M 39 - Jun 12, 2020

 

M 39 - Jun 12, 2020, processed

  M 39 - Jun 12, 2020, processed and sharpened
   

M 39 - Jun 12, 2020

 

M 39 - Jun 12, 2020, processed

 

M 39 - Jun 12, 2020, processed and sharpened

     

M 39 - Aug 24, 2020

 

M 39 - Aug 24, 2020, processed

   

 

My Own Observations

Observations November 2017

Observations September / October 2018

Observations End of January - February 2020

Observations June to August 2020

 

References

On this Site