NGC 1499
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 Hα filter (isolates the Hα line at 656 nm) or 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 (also known as Menkib), seen at centre above the nebula in this image.
The California Nebula was discovered by E. E. Barnard in 1884.
Imaging telescope: Takahashi FSQ130ED
Imaging cameras: FLI ML16200
Mounts: Takahashi EM 400 Temma 2
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: Tak QE 0.73x
Software: PHD 2, Astro Pixel Processer (APP), PixInsight , Sequence Generator Pro (SGP)
Filters: Astrodon Ha (3nm) & SII (3nm)
Accessories: ATIK EFW3
Original Resolution: 4480 x 3588
Dates: Mar. 21 - Mar. 25, 2021
Frames:
Astrodon Ha: 19 x 600"
Astrodon SII: 21 x 600"
Integration: 6 Hours 40 Minutes
Center (RA, Dec): (60.173, 36.166)
Center (RA, hms): 04h 00m 41.553s
Center (Dec, dms): +36° 09' 57.801"
Size: 3.23 x 2.59 deg
Radius: 2.071 deg
Pixel scale: 2.6 arcsec/pixel
Orientation: Up is 181 degrees E of N
The California Nebula was discovered by E. E. Barnard in 1884.
Imaging telescope: Takahashi FSQ130ED
Imaging cameras: FLI ML16200
Mounts: Takahashi EM 400 Temma 2
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: Tak QE 0.73x
Software: PHD 2, Astro Pixel Processer (APP), PixInsight , Sequence Generator Pro (SGP)
Filters: Astrodon Ha (3nm) & SII (3nm)
Accessories: ATIK EFW3
Original Resolution: 4480 x 3588
Dates: Mar. 21 - Mar. 25, 2021
Frames:
Astrodon Ha: 19 x 600"
Astrodon SII: 21 x 600"
Integration: 6 Hours 40 Minutes
Center (RA, Dec): (60.173, 36.166)
Center (RA, hms): 04h 00m 41.553s
Center (Dec, dms): +36° 09' 57.801"
Size: 3.23 x 2.59 deg
Radius: 2.071 deg
Pixel scale: 2.6 arcsec/pixel
Orientation: Up is 181 degrees E of N
Sky Map
Annotated Image
Click on above to view in a larger image
