Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 94  ·  NGC 4736
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Messier 94: The Cat's Eye, 



    
        

            David Redwine
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Messier 94: The Cat's Eye

Getting plate-solving status, please wait...
Messier 94: The Cat's Eye, 



    
        

            David Redwine
Powered byPixInsight

Messier 94: The Cat's Eye

Imaging telescopes or lenses: Celestron 8" EdgeHD  ·  CELESTRON EdgeHD 800

Imaging cameras: ZWO ASI1600 MM Pro

Mounts: Celestron CGX-L

Guiding telescopes or lenses: Celestron RACI

Guiding cameras: Zwo ASI 120 MM-S

Focal reducers: Celestron Edge HD 800 f/0.7

Software: PHD2 Guiding  ·  Celestron CPWI  ·  Adobe Photoshop Version: 21.1.3  ·  PixInsight  ·  APT

Filters: ZWO 1.25" L  ·  Zwo Green 1.25"  ·  Zwo Blue 1.25"  ·  ZWO Red 1.25"

Accessory: Zwo 8 position 1.25" Filter wheel  ·  Skyshed POD


Dates:Feb. 11, 2021

Frames:
ZWO 1.25" L: 8x240" (32') -35C bin 1x1
ZWO Red 1.25": 8x240" (32') bin 1x1
Zwo Blue 1.25": 8x240" (32') bin 1x1
Zwo Green 1.25": 7x240" (28') bin 1x1

Integration: 2h 4'

Avg. Moon age: 29.25 days

Avg. Moon phase: 0.09%


RA center: 12h50m50s.629

DEC center: +41°0731.90

Pixel scale: 0.532 arcsec/pixel

Orientation: 50.911 degrees

Field radius: 0.279 degrees

More info:Open 


Resolution: 3020x2265

Locations: Bluff Creek Observatory, Coleman, MI, United States

Data source: Backyard

Description

Not quite enough subs, but clear nights in Michigan are rare this time of year.

Comments

Revisions

  • Messier 94: The Cat's Eye, 



    
        

            David Redwine
    Original
  • Messier 94: The Cat's Eye, 



    
        

            David Redwine
    B
  • Final
    Messier 94: The Cat's Eye, 



    
        

            David Redwine
    C

B

Description: Rotated, cropped, and sharpened just a bit.

Uploaded: ...

C

Description: New flats smoothed with ACDR applied (SD=3.3) to remove the weave pattern that was visible in some of my T-shirt flats. This greatly reduced color noise . Processed to preserve the core features as much as possible. This is a very challenging high dynamic range galaxy.

Uploaded: ...

Sky plot

Sky plot

Histogram

Messier 94: The Cat's Eye, 



    
        

            David Redwine