Hemisphere:  Northern  ·  Contains:  M 51  ·  NGC 5194  ·  NGC 5195  ·  Whirlpool galaxy
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M51, 



    
        

            Jonathan Young
M51
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M51

Technical card

Imaging telescopes or lenses: TEC 140 APO ED

Imaging cameras: ZWO ASI1600MM-Cool

Guiding telescopes or lenses: William Optics Star 71

Guiding cameras: QHY5L-II

Focal reducers: Astro-Physics QUAD TCC 0.72x

Software: Seqence Generator Pro  ·  PHD Lab Phd 2.6.3  ·  StarTools v1.4.316

Filters: Astrodon LRGB 1.25" E series Gen 2

Accessory: Starizona Microtouch Autofocuser  ·  Starlight Xpress Filter-wheel 7x36mm


Dates:April 22, 2018

Frames:Astrodon LRGB 1.25" E series Gen 2: 256x90" (gain: 139.00) -10C

Integration: 6.4 hours

Darks: ~16

Flats: ~16

Flat darks: ~16

Avg. Moon age: 6.94 days

Avg. Moon phase: 45.34%

Bortle Dark-Sky Scale: 5.00

Mean SQM: 20.50


Basic astrometry details

Astrometry.net job: 3048998

RA center: 13h 29' 53"

DEC center: +47° 11' 42"

Pixel scale: 1.112 arcsec/pixel

Orientation: 266.699 degrees

Field radius: 0.309 degrees


Resolution: 1600x1200

Locations: Backyard, Saline, Michigan, United States

Data source: Backyard

Description

M51
Reprocessed using new workflow in Startools.
Data is from April of 2017, before dithering and OAG.

Total time (20 min stack, 1 hr process)
DSS Average Stack 16 dark, flat, darkflat
SYN-LUM
Develop - 94% with DAF (20 pix)
Dcon - automask 1.6x 15 iterations
Sharp - scale 1 -25%, scale 2 - 50% amount 150%
HDR - reveal all 150 px
Denoise - Amount 20%, 10 pixels, scale 2, BDL = 25%

RGB - in combine 2x2 bin - color tweaks
Denoise - 6 pixels, CDL - 70%

Combine in LRGB module
HDR reveal all - 100 pixels
HDR reveal core - 20 pixels
Save.

Comments

Author

TurbulentMedium
Jonathan Young
License: None (All rights reserved)
2960
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Revisions

  • M51, 



    
        

            Jonathan Young
    Original
  • M51, 



    
        

            Jonathan Young
    B
  • Final
    M51, 



    
        

            Jonathan Young
    C

B

Description: Touchup in LR

Sky plot

Sky plot

Histogram

M51, 



    
        

            Jonathan Young

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