Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  1 CVn  ·  21 CVn  ·  24 CVn  ·  40 UMa  ·  41 UMa  ·  42 UMa  ·  43 UMa  ·  44 UMa  ·  48 bet UMa  ·  5 CVn  ·  50 alf UMa  ·  64 gam UMa  ·  66 UMa  ·  68 UMa  ·  69 del UMa  ·  7 CVn  ·  70 UMa  ·  71 UMa  ·  72 UMa  ·  73 UMa  ·  74 UMa  ·  75 UMa  ·  76 UMa  ·  77 eps UMa  ·  78 UMa  ·  79 zet UMa  ·  80 g UMa  ·  81 UMa  ·  82 UMa  ·  83 UMa  ·  And 37 more.
Getting plate-solving status, please wait...
The one and only Big Dipper constellation Ursa Major, 



    
        

            AstroHannes68
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The one and only Big Dipper constellation Ursa Major

Getting plate-solving status, please wait...
The one and only Big Dipper constellation Ursa Major, 



    
        

            AstroHannes68
Powered byPixInsight

The one and only Big Dipper constellation Ursa Major

Technical card

Imaging telescopes or lenses: NIKON AF-S NIKKOR 50mm F1.8

Imaging cameras: Nikon Z6

Mounts: iOptron Skyguider pro

Software: PixInsight


Dates:April 20, 2021

Frames: 147x120" (4h 54')

Integration: 4h 54'

Avg. Moon age: 7.60 days

Avg. Moon phase: 52.28%


Astrometry.net job: 4439908

RA center: 12h 34' 19"

DEC center: +56° 58' 4"

Pixel scale: 11.832 arcsec/pixel

Orientation: 12.322 degrees

Field radius: 16.527 degrees


Resolution: 9144x4236

Data source: Traveller

Description

The one and only "Big Dipper", constellation "Ursa Major".

I just took approx. 5 h exposure with my Z6 ... what an impressing starfield!
The images are take at 2021-04-20 .
Now to the hard facts and ... as usual some magic which is part of every
image processing if we want or not! ;-)

Group of 60 Bias frames
Group of 70 Dark frames
Group of 60 Flat frames
Group of 147 Light frames [120s, F5.6, ISO3200, Z6, 50mm]

PI Processing:
WBPP, DI, DC, DBE, BN, CC, HT, DBE, CT, CS, ... using masks see uploads to remove noise (-> white mask) and to emphasis color (dark mask).

Let's look at the newest version ... MS did a miracle:
PI processing details:
WBPP, DI, DC, DBE, BN, CC, HT, DBE, CT, CS, Background SCNR+ACDNR, DBE, SCNR(G), CS, SCNR(G), MS(HSV), ACDNR.

Best regards

Johannes

Comments

Revisions

  • The one and only Big Dipper constellation Ursa Major, 



    
        

            AstroHannes68
    Original
  • The one and only Big Dipper constellation Ursa Major, 



    
        

            AstroHannes68
    B
  • The one and only Big Dipper constellation Ursa Major, 



    
        

            AstroHannes68
    C
  • The one and only Big Dipper constellation Ursa Major, 



    
        

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    E
  • Final
    The one and only Big Dipper constellation Ursa Major, 



    
        

            AstroHannes68
    F

B

Description: White mask to remove noise withgout impactinb star structure

Uploaded: ...

C

Description: WBPP, DI, DC, DBE, BN, CC, HT, DBE, CT, CS, Background SCNR+ACDNR, DBE, SCNR(G)

Uploaded: ...

E

Description: more color punsh

Uploaded: ...

F

Description: WBPP, DI, DC, DBE, BN, CC, HT, DBE, CT, CS, Background SCNR+ACDNR, DBE, SCNR(G), CS, SCNR(G), MS(HSV), ACDNR

Uploaded: ...

Sky plot

Sky plot

Histogram

The one and only Big Dipper constellation Ursa Major, 



    
        

            AstroHannes68