Observation by Nick James: Comparison of comets C/2017 T2 and C/201...

Uploaded by

Nick James

Observer

Nick James

Observed

2020 Mar 25 - 21:00

Uploaded

2020 Mar 26 - 08:37

Objects

C/2019 Y4 (ATLAS)
C/2017 T2 (PANSTARRS)

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Constellation

Ursa Major

Field centre

RA: 08^h43^m
Dec: +68°11'
Position angle: -2°29'

Field size

0°58' × 0°40'

Equipment

90mm, f/5 refr. ASI 294MC

Exposure

35x120s

Location

Chelmsford, UK

Target name

C/2017 T2 (PanSTARRS) and C/2019 Y4 (ATLAS)

Title

Comparison of comets C/2017 T2 and C/2019 Y4

About this image

Here's a side-by-side comparison of C/2017 T2 and C/2019 Y4 obtained last night. Same instrument, same processing, same scale. T2 is slightly brighter at mag 8.0 but Y4 has the larger coma. The brightening of Y4 has certainly slowed over the last week. The run of very clear clear nights is starting to take its toll on my daytime productivity!

Files associated with this observation

comparison.jpg (1.2 MB)

Like this image

Gary Poyner, David Swan, Chris Dole, Ron Johnson, Andy Wilson, Jeremy Shears, Peter Mulligan, Mark Phillips, David Basey, Peter Carson, Lyn Smith, Andrew Dumbleton

Comments

Jeremy Shears, 2020 Mar 26 - 11:29 UTC

Nice images Nick. Is this with your portable mount set-up or is the Megrez mounted on your C11?

Nick James, 2020 Mar 26 - 20:25 UTC

It's on a portable mount (an EQ6) set up at the other end of the garden with a good view of the northwest. I'm taking long exposures with this wide-field setup so I didn't want to tie up the main telescope for these images. I hope to follow C/2019 Y4 with this setup right the way through to the point it disappears into the twilight in late May. I'm hoping that we'll have a nice comet by then but who knows?

Jeremy Shears, 2020 Mar 26 - 22:02 UTC

Thanks Nick. It’s clearly producing great results

Good luck with the project to follow it till late May

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