Hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  M 7  ·  NGC 6444  ·  NGC 6453  ·  NGC 6455  ·  NGC 6475  ·  Ptolemy's Cluster
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Ptolemy Cluster M7 - EAA, 



    
        

            DavidLJ
Ptolemy Cluster M7 - EAA
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Ptolemy Cluster M7 - EAA

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)
Getting plate-solving status, please wait...
Ptolemy Cluster M7 - EAA, 



    
        

            DavidLJ
Ptolemy Cluster M7 - EAA
Powered byPixInsight

Ptolemy Cluster M7 - EAA

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Equipment

Mounts
AZ-EQ6
Filters
Baader Planetarium 2" IR-Cut Moon & Skyglow Neodymium Filter
Accessories
Baader Planetarium MPCC coma corrector
Software
SharpCap pro · photoshop

Acquisition details

Dates:
July 16, 2021
Frames:
Integration:
4'
Darks:
4
Flats:
10
Avg. Moon age:
6.40 days
Avg. Moon phase:
39.64%
Bortle Dark-Sky Scale:
4.00
Temperature:
14.00

Basic astrometry details

Astrometry.net job: 4749319

RA center: 17h53m58s.3

DEC center: -34°4749

Pixel scale: 4.074 arcsec/pixel

Orientation: 180.029 degrees

Field radius: 1.486 degrees

Resolution: 2200x1433

Locations: Home observatory, Glenorie, NSW, Australia

Data source: Backyard

Description

A mosaic of 5 panels (i.e. 2 x 2 + central superimposed). Each panel : 30 x 8 seconds exposures using SharpCap livestack. On July 14 2021 the Sky and Telescope website published an article titled "In Heaven With M7, A Portal Into The Deep" which described M7 and various close by objects. This is an attempt to recreate the article's main image using regular EAA viewing techniques. However, this required creating a mosaic as not all objects could be fitted into a single frame. Most of the objects mentioned in the article are highlighted by Astrobin but a couple are not. So a labelled image is also posted here. In particular, note Cannon 2-1 which is a small but noticeably blue planetary nebula near the bottom of the mosaic. This was first studied by Annie Jump Cannon (of OBAFGKM) fame.

Comments

Revisions

  • Final
    Ptolemy Cluster M7 - EAA, 



    
        

            DavidLJ
    Original
  • Ptolemy Cluster M7 - EAA, 



    
        

            DavidLJ
    B

B

Description: With added labels

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Ptolemy Cluster M7 - EAA, 



    
        

            DavidLJ

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