Observation by Grant Privett: 144P

Uploaded by

Grant Privett

Observer

Grant Privett

Observed

2023 Nov 10 - 23:26

Uploaded

2023 Nov 11 - 21:36

Objects

144P Kushida

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Constellation

Aries

Field centre

RA: 02^h55^m
Dec: +19°25'
Position angle: +0°02'

Field size

0°12' × 0°11'

Equipment

300mm VX12 f/4 Newtonian
SW NEQ6
Starlight Trius 694 mono CCD

Exposure

30x 30s x2binning

Location

Near Salisbury

Target name

144P

Title

144P

About this image

Just before closing down for the night I did my occasional "Lets image a random comet" thing. 144P was the target this time - its usually something not too far from the previous object I imaged.

It was visible in the individual frames and appeared to me to have a slight coma. Looking at a growth curve of the stacked image suggested this was probably true. Some simplistic photometry suggest a mag of 16.3 (unfiltered and using Gaia g stars to develop a Zp for the image).

I think JPL Horizons said it should be 17+ but thats not going to be an unfiltered magnitude...

Files associated with this observation

c144p_20231110.jpg (440.7 kB)

Like this image

Duncan Hale-Sutton

Comments

Nick James, 2023 Nov 12 - 08:44 UTC

Good to see you imaging comets! Compare with the images in the Comet Section archive here. My last observation on November 6th had it as 16.7 (unfiltered vs Gaia G) but it is brightening.

If you want to submit comet images to the archive please see the instructions here. The archive should still be around in 50 years when this website is long gone...

Grant Privett, 2023 Nov 12 - 15:16 UTC

I need to tweak my asteroid/NEO/variable star reduction code to handle the photometry properly for comets. Will have a look at the correct reporting for magnitudes too.

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