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Comet
C/2019 L3 Atlas


Object : Comet, C/2019 L3 Atlas
Coordinates/Direction : -
Object size : -
Object magnitude : -
More to know : You can read more about the comet on Seiichi Yoshida's homepage:
http://www.aerith.net/ comet/ catalog/ 2019L3/ 2019L3.html

2022-03-04, L3 Atlas

Comet C/2019 L3 Atlas
Date : 2022-03-04
Time (UT) : 22:07 to 22:28
Magnitude : 9.9
Mount : Skywatcher HEQ5, HEQ5 mount project
Guide system: Astroberry, PHD2 in dithering mode, Guide telescope 200 mm f/3.5, camera QHY5
Lens/telescope : Pentax 645 300 mm ED f/4.0, Pentax 645 300 mm project
Field : 6.9 x 4.6 degrees (at full frame)
Filter : none
Camera : Canon EOS 6D, sensor temperture +1 degree Celsius
Control system : Raspberry / Astroberry, with GPS
Exp. time : 30*30 seconds at ISO1600
Image process tool : Siril, Fitswork, Irfanview
Weather : clear sky
Processing : Flat calibrated, dark, bias subtracted, crop 1:1
Site : Sweden, Stockholm, Hagsätra roof baclcony. Bortle class 9
Comment : This time I'm up on the roof and taken these images. Much better but the comet has moved more far away now. The comet was very weak and the align process didn't work as it should.

2022-01-04, L3 Atlas

Comet C/2019 L3 Atlas
Date : 2022-01-04
Time (UT) : 18:51 to 19:13
Magnitude : 9.8
Mount : Skywatcher HEQ5, HEQ5 mount project
Guide system: Astroberry, PHD2 in dithering mode, Guide telescope 200 mm f/3.5, camera QHY5
Lens/telescope : Pentax 645 300 mm ED f/4.0, Pentax 645 300 mm project
Field : 6.9 x 4.6 degrees (at full frame)
Filter : none
Camera : Canon EOS 6D
Control system : Raspberry / Astroberry, with GPS
Exp. time : 30*30 seconds at ISO1600
Image process tool : Siril, Fitswork
Processing : Flat calibrated, dark, bias subtracted, cropped about 50%.
Site : Sweden, Stockholm, Hagsätra. Bortle class 9
Comment : This time I did find the comet. Some parameters must have been wrong two weeks earlier. One more comet on the sky and I can see it from our balcony. A 300 mm lens is a bit short for this far away comet.

2021-12-17, L3 Atlas

Comet C/2019 L3 Atlas (Click on the image to get one in full resolution, opens in a new window)
Date : 2021-12-17
Time (UT) : 21:17 to 21:43
Magnitude : 9.9
Mount : Skywatcher HEQ5, HEQ5 mount project
Guide system: Astroberry, PHD2 in dithering mode, Guide telescope 200 mm f/3.5, camera QHY5
Lens/telescope : Pentax 645 300 mm ED f/4.0, Pentax 645 300 mm project
Field : 6.9 x 4.6 degrees (at full frame)
Filter : none
Camera : Canon EOS 6D
Control system : Raspberry / Astroberry, with GPS
Exp. time : 31*30 seconds at ISO1600
Image process tool : Siril, Fitswork
Processing : Flat calibrated, dark, bias subtracted, cropped about 50%.
Site : Sweden, Stockholm, Hagsätra. Bortle class 9
Comment : The days before Christmas I had the a comet visible from our balcony. Can you find it on the photo because I can't. Have to do an investigating. Even if magnitude 9.9 is weak in a light polluted are like this it should be possible to see it.

Sky Chart and Plate solving

Comet C/2019 L3 Atlas (Click on the image to get one in full resolution, opens in a new window)

With some help from SkyChart (CdC) to get where the comet is.

Comet C/2019 L3 Atlas (Click on the image to get one in full resolution, opens in a new window)

A plate solving identify the objects on the photo, done on the Astrometry homepage..

Comet C/2019 L3 Atlas

When I compare the Sky chart where the comet is and the plate solve where the photo is taken I see that I missed the comet by 8 degrees. Some mistake done this night.

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