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Contains:  California nebula, NGC 1499, The star ξPer
Getting plate-solving status, please wait...
NGC 1499 - California Nebula in SHO, 





    
        

            Uwe Deutermann

NGC 1499 - California Nebula in SHO

Technical card

Resolution: 4012x3494

Dates:Oct. 13, 2018Oct. 14, 2018Oct. 30, 2018

Frames:
Baader H-Alpha 2" 7nm: 18x600" (gain: 200.00) -15C bin 1x1
Baader H-Alpha 2" 7nm: 7x600" (gain: 200.00) -20C bin 1x1
Baader OIII 2" 8,5nm: 18x600" (gain: 200.00) -15C bin 1x1
Baader OIII 2" 8,5nm: 9x600" (gain: 200.00) -20C bin 1x1
Baader SII 2" 8nm: 15x600" (gain: 200.00) -15C bin 1x1
Baader SII 2" 8nm: 9x600" (gain: 200.00) -20C bin 1x1

Integration: 12.7 hours

Darks: ~50

Flats: ~50

Bias: ~50

Avg. Moon age: 10.21 days

Avg. Moon phase: 37.68%

Bortle Dark-Sky Scale: 6.00

Temperature: 21.00

Astrometry.net job: 2345337

Locations: Home Observatory, Fleming Island, Florida, United States

Data source: Backyard

Description

My first try to create an image with a lot of and longer exposure time. I chose the California Nebula since it is one of the objects in the sky that I can image for approximately 4.5 hours in a row without having trees blocking the sight. I can definitely say that the result is better, not as good as I anticipated, but seeing is a problem in high humidity areas. Still, this encourages to go this path further, hopefully clear skies will help me out with this endeavor ;-).
Wikipedia: The California Nebula (NGC 1499) is an emission nebula located in the constellation Perseus. It is so named because it appears to resemble the outline of the US State of California on long exposure photographs. It is almost 2.5° long on the sky and, because of its very low surface brightness, it is extremely difficult to observe visually. It can be observed with a Hβ filter (isolates the Hβ line at 486 nm) in a rich-field telescope under dark skies. It lies at a distance of about 1,000 light years from Earth. Its fluorescence is due to excitation of the Hβ line in the nebula by the nearby prodigiously energetic O7 star, xi Persei.

Comments

Author

udeuterm
Uwe Deutermann
License: Attribution-NonCommercial-ShareAlike Creative Commons
961
Like

Revisions

  • NGC 1499 - California Nebula in SHO, 





    
        

            Uwe Deutermann
    Original
  • NGC 1499 - California Nebula in SHO, 





    
        

            Uwe Deutermann
    B
  • Final
    NGC 1499 - California Nebula in SHO, 





    
        

            Uwe Deutermann
    C

B

More luminance

C

Added 4 more hours of exposure time. The seeing conditions were not as great as they were when I took the first 8 hours.

Histogram

NGC 1499 - California Nebula in SHO, 





    
        

            Uwe Deutermann