Abell 7
Published in Astronomy Now Magazine April 2020
Published in Astronomy Now Magazine April 2020
Abell 7 is an intensely faint, and thus rarely imaged, large planetary nebula in the southern constellation Lepus. It was discovered by George Abell in 1955. It is 1,800 light years from Earth. The small galaxy to the north east is PGC 16611.
TARGET
Nomenclature: Abell 7, PNG 215.5-30, PK 215-30.1
Right Ascension: 05:03:07.53
Declination: -15:36:22.7
Size: 13 arc min
Discovery: George Abell in 1966
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
Nomenclature: Abell 7, PNG 215.5-30, PK 215-30.1
Right Ascension: 05:03:07.53
Declination: -15:36:22.7
Size: 13 arc min
Discovery: George Abell in 1966
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
5nm H-Alpha: 32x1800 bin 2x2, 11x1800 bin 3x3
3nm OIII: 14x1200 bin 3x3, 19x1800 bin 3x3
Red: 22x300 bin 1x1
Green: 21x300 bin 1x1
Blue: 19x300 bin 1x1
Total integration: 40.8 hours
Pixel scale: 0.533 arcsec/pixel
Field radius: 0.369 degrees
Capture dates: 4 January - 19 February 2020
Capture location: Fregenal de la Sierra, Spain
5nm H-Alpha: 32x1800 bin 2x2, 11x1800 bin 3x3
3nm OIII: 14x1200 bin 3x3, 19x1800 bin 3x3
Red: 22x300 bin 1x1
Green: 21x300 bin 1x1
Blue: 19x300 bin 1x1
Total integration: 40.8 hours
Pixel scale: 0.533 arcsec/pixel
Field radius: 0.369 degrees
Capture dates: 4 January - 19 February 2020
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Ha image
OIII image