Comet C/2020 R4
Taken by Dan Bartlett on May 7, 2021 @
June Lake California USA
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Hi folks,
Comet C/2020 R4 ATLAS.
A fairly bright comet has moved into Coma Berenices and is skirting by 10th magnitude Galaxy NGC4414 ( ~55M ly away). The Comet is fairly close to us at this moment, at about 0.7 AU away. Perihelion was on March 1 of this year, never closer than 1 AU from the sun.
I'm not surprised about the color of the comet's atmosphere (Coma) being a typical Carbon rich greenish/blue in color. It's the reddish brown tail color and structure that intrigues me. Bright Comet C/2020 F3 NEOWISE displayed a similar reddish hue just after perihelion last year. I wonder if sodium atoms are at play again?
I imaged this comet just after hosting a live YouTube event for my high school astrophysics students. (https://youtu.be/Wi7-OfkbsHw). After the spring galaxy show, about 11:30p, May7 - 8, I was able to capture 76 x 120second frames of the comet with a Celestron RASA 11 and a ZWO asi 294mc P camera. A closeup the night before (also attached) showed interesting cometary detail.Here is an animation link of Comet R4 ATLAS from the night of May 5-6: Hi folks,Comet C/2020 R4 ATLASA fairly bright comet has moved into Coma Berenices and is skirting by 10th magnitude Galaxy NGC4414 ( ~55M ly away). The Comet is fairly close to us at this moment, at about 0.7 AU away. Perihelion was on March 1 of this year, never closer than 1 AU from the sun.
I'm not surprised about the color of the comet's atmosphere (Coma) being a typical Carbon rich greenish/blue in color. It's the reddish brown tail color and structure that intrigues me. Bright Comet C/2020 F3 NEOWISE displayed a similar reddish hue just after perihelion last year. I wonder if sodium atoms are at play again?
I imaged this comet just after hosting a live YouTube event for my high school astrophysics students. (https://youtu.be/Wi7-OfkbsHw). After the spring galaxy show, about 11:30p, May7 - 8, I was able to capture 76 x 120second frames of the comet with a Celestron RASA 11 and a ZWO asi 294mc P camera. A closeup the night before (also attached) showed interesting cometary detail. Above is an animation link of Comet R4 ATLAS from the night of May 5-6:
Best to you both,Dan Bartlett
Photographer's website:
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https://Hi folks,Comet C/2020 R4 ATLASA fairly bright comet has moved into Coma Berenices and is skirting by 10th magnitude Galaxy NGC4414 ( ~55M ly away). The Comet is fairly close to us at this moment, at about 0.7 AU away. Perihelion was on March 1 of this year, never closer than 1 AU from the sun. I'm not surprised about the color of the comet's atmosphere (Coma) being a typical Carbon rich greenish/blue in color. It's the reddish brown tail color and structure that intrigues me. Bright Comet C/2020 F3 NEOWISE displayed a similar reddish hue just after perihelion last year. I wonder if sodium atoms are at play again? I imaged this comet just after hosting a live YouTube event for my high school astrophysics students. (https://youtu.be/Wi7-OfkbsHw). After the spring galaxy show, about 11:30p, May7 - 8, I was able to capture 76 x 120second frames of the comet with a Celestron RASA 11 and a ZWO asi 294mc P camera. A closeup the night before (also attached) showed interesting cometary detail.Here is an animation link of Comet R4 ATLAS from the night of May 5-6: https://vimeo.com/546747865 Best to you both,Dan Bartlett
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