NGC 1499 (California Nebula)
Size: 1 x 4 degrees
FOV: 2.6 x 3.9 degrees
1140 light years
RA (Jnow): 4h 01m 35s
Dec (Jnow): +36 degrees 25' 52"
Position Angle: minus 2 degrees
This is a 4 hour Ha exposure of NGC 1499, a large hydrogen emission
nebula in Perseus. NGC 1499 is one of a few nebulae that emit
strongly in both H alpha (red) and H beta (blue), with little OIII
emission, skewing the usual red color typical of emission nebulae
towards the blue. The star responsible for exciting hydrogen
emission from the nebula is thought to be Xi Persei, a "runaway star"
that is described on Rob
Gendler's website. Feel free to check out the larger size
images above, as well as my color image
of this object.
Dates: September 16 and 20, 2007: Ha.
FSQ106 at f5 on the Takahashi NJP
Autoguider: SBIG ST-402 with
Camera: STL11K -20C.
Filters: Baader 7nm
Ha filter (50mm unmounted).
Exposures: Ha- 12 x 20'.
exposure 4 hours.
Conditions: Temperature was generally cool 55-60 degrees
Calibrated, aligned, and Sigma Clip combined
in Maxim, followed
in ImagesPlus (IP). Further processing in Photoshop CS (16
note: Graphics on this website may not be reproduced without
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