NGC 1501 (PK 144+6.1) Planetary Nebula in Camelopardalis

Located at: RA 04 hours 07 minutes 00 seconds, Dec +60 degrees 55 minutes 11 seconds

Size: 52" Magnitude: 13.3 photographic Class: 3

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -20c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 510 minutes (51 x 10 minute subs), 11/19/21/2014; seeing 2.3-4.0 FWHM per CCDStack

Processing:

CCDStack 2.84.5400.22239, Photoshop CS5.1

Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes: Having a cloudy/windy November ... rain passing to the north.

See 200% crop.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 1501
NGC 1501 = PK 144+6.1 = PN G144.5+06.5
04 06 59.4 +60 55 15
V = 11.9;  Size 56"x48"

17.5" (1/8/00): at 100x, this moderately bright PN was irregularly round, 1' 
diameter, weakly annular with a faint glimpse of the central star.  There was a 
good contrast gain with the OIII filter and the image was crisp-edged, slightly 
elongated SW-NE and the small, darker center was more evident.  Excellent view 
at 220x with the faint central star (mag 14.4) clearly visible.  The surface 
brightness was irregular with an unevenly brighter outer rim.  The central star 
was visible steadily at 280x and the overall surface brightness was mottled or 
"clumpy" (brighter on W and NE rim), darkening in the center.

17.5" (9/14/85): bright, moderately large, almost round, 1' diameter, high 
surface brightness.  An easy mag 14.2 central star is visible.  Appears darker 
near the central star with a brighter rim.

13" (1/28/84): slightly annular, very faint mag 14 central star.

8": fairly faint, moderately large, bluish, slightly elongated, sharp-edged.

- by Steve Gottlieb