Messier 71 (M 71)

Introduction | Map | Sketch | Find/Identify | My Best Own Photos | My Own Observations | References || Appendix: My Own Photos

On this page I collect my observations of the globular star cluster M 71 in the constallation Sagitta.

 

Introduction

M 71 in the constellation Sagitta is, according to Stoyan, an unusually loose globular star cluster.

Size: 6' (Stoyan)
Distance: 13,000 light years (Stoyan)
Rating: *** (Stoyan).

 

Map

M 71 in Sagitta is close to the constellation Scutum/Shield. (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

 

Sketch

The sketch by Michael Vlasov (DeepSkyWatch.com) provides a rough impression of what I wanted to observe: Sketch of M 71 by Michael Vlasov (Copyright © Michael Vlasov 2016)

Note: I only have the author's permission to link to the sketch.

 

Find/Identify

Find: The small constellation Sagitta/Pfeil lies above Altair (Aquila/Adler); it consists mainly of 4 stars which almost form a straight line. From the left and about in the middle there is one star and on the right there are two stars close above each other. The globular cluster M 71 lies about in the middle between the two single stars on the left and in the middle and a little below the connecting line.

Identify: Once you found M 71 in the way as described above, it is also identified. (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

 

My Best Own Photos

Atik Infinity & Explorer 150PDS (December 31, 2017)

         

M 71 - unprocessed

 

Ditto - post-processed

  Ditto - post-processed and sharpened

eVscope

         

M 71 - Aug 24, 2020

 

M 71 - Aug 24, 2020, processed

 

M 71 - Aug 24, 2020, processed and sharpened

         

M 71 - Oct 19, 2020

 

M 71 - Oct 19, 2020, processed

 

M 71 - Oct 19, 2020, processed and sharpened

 

My Own Observations

Observations September/October 2018

Observations September/October 2019

Observations August to October 2020

 

References

On this Site


Appendix: My Own Photos

Atik Infinity & Explorer 150PDS (December 31, 2017)

         

M 71 - unprocessed

 

Ditto - post-processed

  Ditto - post-processed and sharpened

eVscope

         

M 71 - Aug 9, 2020, many hot pixels

 

M 71 - Aug 9, 2020, processed

 

M 71 - Aug 9, 2020, processed and sharpened

         

M 71 - Aug 9, 2020, many hot pixels

 

M 71 - Aug 9, 2020, processed

 

M 71 - Aug 9, 2020, processed and sharpened

         

M 71 - Aug 19, 2020

 

M 71 - Aug 19, 2020, processed

 

M 71 - Aug 19, 2020, processed and sharpened

         

M 71 - Aug 24, 2020

 

M 71 - Aug 24, 2020, processed

 

M 71 - Aug 24, 2020, processed and sharpened

         

M 71 - Oct 19, 2020

 

M 71 - Oct 19, 2020, processed

 

M 71 - Oct 19, 2020, processed and sharpened

         

M 71 - Oct 19, 2020

 

M 71 - Oct 19, 2020, processed

 

M 71 - Oct 19, 2020, processed and sharpened