Observation by Robin Leadbeater: C/2020 R4 ATLAS - A spectroscopic cross ...

Uploaded by

Robin Leadbeater

Observer

Robin Leadbeater

Observed

2021 May 01 - 00:26

Uploaded

2021 May 05 - 22:51

Objects

C/2020 R4
Spectrum

Equipment

ALPY 600 spectrograph
ATK 428 camera
Celestron C11 SCT 280mm aperture f5.5

Exposure

4200 s

Location

Three Hills Observatory Wigton Cumbria UK

Target name

C/2020 R4 (ATLAS)

Title

C/2020 R4 ATLAS - A spectroscopic cross section through the coma

About this image

A low resolution R~550 spectrum image of a cross section through the coma.

The spectrum of the emission from the central coma. (The dust component was subtracted using a G2v spectrum template modified to match the shape of the dust continuum in the comet spectrum.) Note the high intensity of the CN emission line at 390nm

The intensity across the coma of the emission components CN, C2 and the sunlit dust. Note the similarity in the distribution of the C2 and CN components compared with C/2020 F3 (NEOWISE) where the C2 component was significantly narrower

Files associated with this observation

C2020_R4_ATLAS_20210501_poster.png (532.8 kB)

Like this image

David Swan, Andy Wilson, Alun Halsey, Hugh Allen, Derek Robson, Peter Carson

Comments

Derek Robson, 2021 May 17 - 00:09 UTC

Very nice scientific work

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