Description:
A deep integration time on a wide field image of Andromeda Galaxy (M31), using an Ha filter, shows an amazing structure that has been recently called the Clouds of Andromeda. A faint structure of Galactic Cirrus, part of our Milky Way.
As soon as I saw Rogelio's Bernal 2017 image of Andromeda (see the APOD here) I knew I wanted to get such a deep view of this area. As the time went by more images appeared, most of them showing a detailed (crop) view. This 2021 I acquired a new widefield astrophotography setup specially designed for this project. It consists of a regular DSLR lens (a Sigma Art 85mm) and a new CMOS camera matched with a full set of filters.
As I started integrating the data in the Ha channel (3nm Ha narrow band filter) some really faint clouds appeared. But it was not until I got around 30h of data that it was possible to do a full processing of this image showing the faint Galactic Cirrus that surrounds this area of the night sky. I captured all the Ha data stopping the lens at f/2.8. But the star shapes were not good enough, so I combined the RGB image of the stars captured at f/4.0 (thanks Daniel for this great idea).
My interest in Galactic Cirri started several years ago when I started my collaboration with the Instituto de Astrofísica de Canarias (Drs. I.Trujillo and R.Infante) in a low surface brightness study of the M101 Galaxy. You can see this project here: https://astrocat.info/pro-am-science/
Image details:
L: 35x300" f/2.8
RGB: (33;43;45) x 300″ f/2.8
Ha: 217x600" f/2.8
RGB: (12;10;12)x300" f/4
All images at 120Gain -15ºC bin2
Calibrated with 30 flats (part of the data), 30 darks, 30 dark-flats
Average darkness: 21 mag/arcsec2
Image resolution: 9.12”/pixel
Data acquisition: September and October 2021.
Ha exposure: 36h10'
Total exposure: 52hTotal
Software: SGP, PHD2, APP, PIX, LR, PS, TPZ.
Aleix Roig, October 2021. Prades (Tarragona, Catalonia – Spain).
Uploaded: ...
Description:
A deep integration time on a wide field image of Andromeda Galaxy (M31), using an Ha filter, shows an amazing structure that has been recently called the Clouds of Andromeda. A faint structure of Galactic Cirrus, part of our Milky Way.
As soon as I saw Rogelio's Bernal 2017 image of Andromeda (see the APOD here) I knew I wanted to get such a deep view of this area. As the time went by more images appeared, most of them showing a detailed (crop) view. This 2021 I acquired a new widefield astrophotography setup specially designed for this project. It consists of a regular DSLR lens (a Sigma Art 85mm) and a new CMOS camera matched with a full set of filters.
As I started integrating the data in the Ha channel (3nm Ha narrow band filter) some really faint clouds appeared. But it was not until I got around 30h of data that it was possible to do a full processing of this image showing the faint Galactic Cirrus that surrounds this area of the night sky. I captured all the Ha data stopping the lens at f/2.8. But the star shapes were not good enough, so I combined the RGB image of the stars captured at f/4.0 (thanks Daniel for this great idea).
My interest in Galactic Cirri started several years ago when I started my collaboration with the Instituto de Astrofísica de Canarias (Drs. I.Trujillo and R.Infante) in a low surface brightness study of the M101 Galaxy. You can see this project here: https://astrocat.info/pro-am-science/
Image details:
L: 35x300" f/2.8
RGB: (33;43;45) x 300″ f/2.8
Ha: 217x600" f/2.8
RGB: (12;10;12)x300" f/4
All images at 120Gain -15ºC bin2
Calibrated with 30 flats (part of the data), 30 darks, 30 dark-flats
Average darkness: 21 mag/arcsec2
Image resolution: 9.12”/pixel
Data acquisition: September and October 2021.
Ha exposure: 36h10'
Total exposure: 52hTotal
Software: SGP, PHD2, APP, PIX, LR, PS, TPZ.
Aleix Roig, October 2021. Prades (Tarragona, Catalonia – Spain).
Uploaded: ...
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