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DD78 and it's Globular Cluster, members of the M81 group

Technical card

Dates:Feb. 6, 2019

Frames:Baader Luminance: 422x300" (gain: 1.00) -20C bin 1x1

Integration: 35.2 hours

Darks: ~250

Flats: ~25

Bias: ~256

Avg. Moon age: 1.45 days

Avg. Moon phase: 2.35%

Basic astrometry details job: 3073362

RA center: 10h 26' 58"

DEC center: +67° 34' 12"

Pixel scale: 1.107 arcsec/pixel

Orientation: 1.537 degrees

Field radius: 0.328 degrees

Resolution: 1202x1761

Locations: Knight Observatory,Quinta Castelo Novo, Serra de Tomar, Portugal

Data source: Backyard


The surface brightness of D78 is 26.1 mag/arcsec^2 . I found an article: " Dwarf spheroidal galaxies in the M81 group imaged with WFPC2"

There is an image made with the Hubble Space telescope WFPC2 camera with the annotated position of a Globular cluster that orbits this spheroidal galaxy. So i could annotate the Globular myself on the luminance image i made.



Kees Scherer
License: Attribution Creative Commons

Sky plot

Sky plot


DD78 and it's Globular Cluster, members of the M81 group, 


            Kees Scherer

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