Hemisphere:  Northern  ·  Constellation: Camelopardalis (Cam)  ·  Contains:  NGC 2403  ·  NGC2403  ·  NGC2404
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Flocculent Galaxy in Camelopardalis, 



    
        

            Rich Sky
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Flocculent Galaxy in Camelopardalis

Technical card

Imaging telescopes or lenses: Celestron 9.25

Imaging cameras: ZWO ASI 1600MM-Cooled ASI1600MM Cooled

Mounts: Celestron CGX

Guiding telescopes or lenses: Orion 80mm GuideScope Guide scope

Guiding cameras: Orion SSAG

Focal reducers: Celestron Reducer 0,63

Software: StarTools 1.6  ·  SGP  ·  PhD 2  ·  DeepSky Stacker (DSS) DSS DeepSkyStacker

Accessory: Celestron Focus Motor  ·  Adapter M42 T2/T2 M42T2  ·  Baader Ufc 2" #2459112  ·  Baader Ufc S70 RASA 8 #2459136  ·  Baader Ufc filter base#2459110  ·  Baader Ufc T2 adapter #2459115  ·  Baader Universal Filter Changer (UFC)  ·  Bahtinov mask  ·  Baader Planetarium Rasa 8 UFC  ·  Orion SSAG 80mm



Astrometry.net job: 4393745

RA center: 7h 36' 36"

DEC center: +65° 31' 31"

Pixel scale: 2.419 arcsec/pixel

Orientation: 19.791 degrees

Field radius: 0.356 degrees


Resolution: 657x831

Data source: Backyard

Description

William Herschel discovered NGC 2403 galaxy. This galaxy is a flocculent spiral galaxy located in the constellation Camelopardalis, 8MM ly from earth.

1 light year is = 9,460,730,000,000 km (9.5 Trillion km)
Earth to Sun distance = 150 million km

My image is a 8 hr stack of L-R-G-B data or 2 hrs per filter. Viewing conditions were challenging with high altitude clouds, so I look forward to improving this beautiful DSO. When the core of this galaxy is developed, the floccules of clouds/nebulosity are everywhere, thus the name 'flocculent' galaxy.

This was a great project to get the SCT adjusted/aligned and to get guiding error below 0.9".

Learnings:
with the SCT, focus can change rapidly, adjust focus every 60 minutes. Using ASTAP, the sharpness can change during the night, so I am now checking HFR and sharpness more closely.

Imaging at a focal length of 400 mm is easier than imaging at 1481 mm or 2350 mm. Imaging at a small F/ length is much simpler and easier (guiding-focus-plate solving-flats-processing)...and the light is better (I miss the RASA already). Imaging under bortle 8 sky is not simple and finding the right exposure time becomes a challenge. In my image, the stars are over-saturated and next time around (next year), I will use a slightly lower exposure time.

Keep looking up!

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Revisions

  • Flocculent Galaxy in Camelopardalis, 



    
        

            Rich Sky
    Original
  • Flocculent Galaxy in Camelopardalis, 



    
        

            Rich Sky
    B
  • Flocculent Galaxy in Camelopardalis, 



    
        

            Rich Sky
    C
  • Final
    Flocculent Galaxy in Camelopardalis, 



    
        

            Rich Sky
    D

B

Description: Same as original but rotated.

Uploaded: ...

C

Description: Removed Luminance layer and rotated compared to original. Full frame.

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D

Description: Final version - Luminance 2h - RGB (7h). Additional B data acquired on 8-04-2021.

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Flocculent Galaxy in Camelopardalis, 



    
        

            Rich Sky