Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  IC 4725  ·  M 25
M25 Open Cluster in Sagittarius , 



    
        

            Barry Brook
M25 Open Cluster in Sagittarius
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M25 Open Cluster in Sagittarius

Technical card

Imaging telescopes or lenses: Orion ED80T CF

Imaging cameras: Sony NEX-3 DSLR

Mounts: Skywatcher AZ EQ-6 GT

Guiding telescopes or lenses: Skywatcher SW120 F5 refractor

Guiding cameras: Orion StarShoot G3 Mono CCD

Focal reducers: TeleVue 0.8x Photo Reducer/Flattener TRF-2008

Software: Cartes du Ciel  ·  Nebulosity 3  ·  Stark Labs PHD2 v2.2.2g  ·  EQASCOM  ·  StarTools 1.3.5.286


Dates:July 29, 2014

Frames: 30x180" ISO800

Integration: 1.5 hours

Darks: ~11

Flats: ~100

Bias: ~100

Avg. Moon age: 2.28 days

Avg. Moon phase: 5.79%

Bortle Dark-Sky Scale: 6.00

Mean FWHM: 2.05

Temperature: 7.00


Basic astrometry details

Astrometry.net job: 339153

RA center: 18h 30' 57"

DEC center: -19° 3' 46"

Orientation: -89.157 degrees

Field radius: 2.098 degrees


Resolution: 620x411

Description

M25 is an Open Cluster at a distance of about 2,000 light-years away from Earth, spanning about 19 light years across. It is nestled in the rich star fields of Sagittarius, towards the heart of the Galaxy.

Comments

Revisions

  • M25 Open Cluster in Sagittarius , 



    
        

            Barry Brook
    Original
  • Final
    M25 Open Cluster in Sagittarius , 



    
        

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    B

Sky plot

Sky plot

Histogram

M25 Open Cluster in Sagittarius , 



    
        

            Barry Brook