NGC 7662 The Blue Snowball Nebula
Published in Astronomy Now Magazine October 2020
Published in Sky and Telescope Magazine February 2021
NGC 7662 The Blue Snowball Nebula
Published in Astronomy Now Magazine October 2020
Published in Sky and Telescope Magazine February 2021
A planetary nebula in the constellation Andromeda. There is uncertanty over its distance from Earth, with estimates ranging from 1,800 to 5,600 light years.
TARGET
Nomenclature: NGC 7662, Blue Snowball Nebula, Snowball Nebula, PK 106-17.1, GCRV 14695, PN ARO 20, Caldwell 22
Right Ascension: 23:25:53.39
Declination: +42:32:06.0
Size: 30 arc sec (central shell), 2.5 arc min (outer halo)
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
3nm OIII: 19x1800 bin 2x2
Lum: 36x300 bin 1x1
Red: 24x300 bin 1x1
Green: 22x300 bin 1x1
Blue: 23x300 bin 1x1
Total integration: 19.6 hours
Pixel scale: 0.530 arcsec/pixel
Field radius: 0.131 degrees
Capture dates: 18-27 August 2019
Capture location: Fregenal de la Sierra, Spain
3nm OIII: 19x1800 bin 2x2
Lum: 36x300 bin 1x1
Red: 24x300 bin 1x1
Green: 22x300 bin 1x1
Blue: 23x300 bin 1x1
Total integration: 19.6 hours
Pixel scale: 0.530 arcsec/pixel
Field radius: 0.131 degrees
Capture dates: 18-27 August 2019
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2