NGC 253
APOD GrAG Astronomical Photo Of The Day 30 October 2020 https://apod.grag.org/2020/10/30/ngc-253/
APOD GrAG Astronomical Photo Of The Day 30 October 2020 https://apod.grag.org/2020/10/30/ngc-253/
NGC 253 is an intermediate spiral galaxy in the constellation Sculptor. At declination -25 I had thought that this would be too low for me to capture over the walls of my observatory in Spain, but decided to give it a try. I'm delighted to say that I was wrong- although capturing through so much unstable atmosphere was a challenge. I think this is such a handsome galaxy.
TARGET
Nomenclature: NGC 253, Sculptor Galaxy, Silver Coin Galaxy, Silver Dollar Galaxy, Cladwell 65
Right Ascension: 00:47:33
Declination: -25:17:18
Discovery: Caroline Herschel in 1783
Size: 27.5 x 6.8 arc min
EQUIPMENT USED
APM TMB LZOS 152 refractor
10Micron GM2000 HPS mount
QSI6120 CCD camera
Astrodon filters
IMAGE CAPTURE
Luminance: 92x300 bin 1x1
Red: 22x300 bin 1x1
Green: 21x300 bin 1x1
Blue: 20x300 bin 1x1
Ha: 2x900 bin 4x4
Total integration: 13.4 hours
Pixel scale: 0.533 arcsec/pixel
Field radius: 0.370 degrees
Capture dates: 14-15 October 2020
Capture location: Fregenal de la Sierra, Spain
Luminance: 92x300 bin 1x1
Red: 22x300 bin 1x1
Green: 21x300 bin 1x1
Blue: 20x300 bin 1x1
Ha: 2x900 bin 4x4
Total integration: 13.4 hours
Pixel scale: 0.533 arcsec/pixel
Field radius: 0.370 degrees
Capture dates: 14-15 October 2020
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2