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Hemisphere:  Northern  ·  Contains:  M 74  ·  M74  ·  NGC 628
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M74, 



    
        

            KuriousGeorge
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M74

Imaging telescopes or lenses: Planewave CDK24

Imaging cameras: FLI Proline 16803

Mounts: Planewave L600

Guiding cameras: Starlight Xpress Ultrastar

Focal reducers: None

Software: Photoshop CS3  ·  PixInsight 1.8  ·  PHD Guiding 2  ·  CCDWare CCD Inspector  ·  Planewave PWI4  ·  Planewave PWI3  ·  Maxim DL6  ·  Neat Image V7  ·  Sequence Generator Pro

Filters: Astrodon 50mm B  ·  Astrodon 50mm R  ·  Astrodon 50mm L  ·  Astrodon 50 mm G

Accessory: FLI CFW-5-7  ·  Astrodon Monster MOAG  ·  Hedrick Focuser  ·  Planewave Delta-T  ·  Planewave EFA


Dates:Nov. 24, 2019

Frames:
Astrodon 50 mm G: 4x900" -30C bin 1x1
Astrodon 50mm B: 4x900" -30C bin 1x1
Astrodon 50mm L: 8x900" -30C bin 1x1
Astrodon 50mm R: 4x900" -30C bin 1x1

Integration: 5.0 hours

Darks: ~20

Flats: ~80

Flat darks: ~80

Bias: ~20

Avg. Moon age: 27.20 days

Avg. Moon phase: 6.02%

Mean SQM: 21.30

Mean FWHM: 2.00


Astrometry.net job: 3077674

RA center: 1h 36' 42"

DEC center: +15° 46' 52"

Pixel scale: 0.468 arcsec/pixel

Orientation: -178.141 degrees

Field radius: 0.342 degrees


Resolution: 3688x3752

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard

Description

The November weather hasn't been very cooperative this dark cycle. We're seeing clouds and 20 mph+ wind nearly every day.

Last night was surprisingly clear, dark and steady. Here's M74 from what I could gather from 8 PM to 1 AM. A bit noisier than my normal 15 hours, but surprisingly deeper than I expected. Humidity was very low (30%), so that may have helped. Big snow storm on the way, so I suppose this is "the calm before the storm".

"M74 is a spiral galaxy in the constellation Pisces, 32 million light-years away from Earth.

The galaxy's low surface brightness makes it the most difficult Messier object for amateur astronomers to observe. However, the relatively large angular size of the galaxy and the galaxy's face-on orientation make it an ideal object for professional astronomers who want to study spiral arm structure and spiral density waves. It's estimated that M74 is home to about 100 billion stars."

Comments

Author

KuriousGeorge
KuriousGeorge
License: None (All rights reserved)
3673
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Revisions

  • M74, 



    
        

            KuriousGeorge
    Original
  • Final
    M74, 



    
        

            KuriousGeorge
    B

B

Description: Improved noise processing and no star shrink to help preserve smallest background galaxies.

Sky plot

Sky plot

Histogram

M74, 



    
        

            KuriousGeorge