M81 Bode's Nebula
Published in Astronomy Now Magazine April 2019 and June 2021
Published in Astronomy Now Magazine April 2019 and June 2021
A grand design spiral galaxy in the constellation Ursa Major. It is about 12 million light years from Earth, with a diameter of 90,000 light years.
TARGET
Nomenclature: M81, Messier 81, Bode's Galaxy, Bode's Nebula
Right Ascension: 09:55:33.2
Declination: +69:03:55
Size: 27 arc min
Discovery: Johann Elert Bode on 31 December 1774
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
5nm Ha: 5x1800 bin 1x1
Luminance: 30x300 bin 1x1
Red: 14x300 bin 1x1
Green: 14x300 bin 1x1
Blue: 14x300 bin 1x1
Total integration: 8.5 hours
Pixel scale: 0.534 arcsec/pixel
Field radius: 0.356 degrees
Capture dates: 21 January - 31 December 2018
Capture location: Alcalali, Spain
5nm Ha: 5x1800 bin 1x1
Luminance: 30x300 bin 1x1
Red: 14x300 bin 1x1
Green: 14x300 bin 1x1
Blue: 14x300 bin 1x1
Total integration: 8.5 hours
Pixel scale: 0.534 arcsec/pixel
Field radius: 0.356 degrees
Capture dates: 21 January - 31 December 2018
Capture location: Alcalali, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2