Observation by John Arnold: 10-second exposure shows 4 satellites ar...

Uploaded by

John Arnold

Observer

John Arnold

Observed

2025 Oct 25 - 20:14

Uploaded

2025 Nov 03 - 11:10

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Constellation

Serpens Caput

Field centre

RA: 15^h34^m
Dec: +16°30'
Position angle: +39°42'

Field size

7°04' × 5°51'

Equipment

Pentax K70 DSLR with GPS unit and 135 mm lens

Exposure

10-second exposure

Location

A municipal park in Leeds

Target name

Comet Lemmon

Title

10-second exposure shows 4 satellites around Comet Lemmon

About this image

A sign of the times, alas. This is a single 10-second exposure, which picked up 4 satellites around Comet Lemmon. The camera is a Pentax K70 in "Astrotracer" mode, meaning that during the exposure the sensor moves to track the stars whilst the camera remains still on a standard photographic tripod. This used an old second-hand 135 mm lens, set at its widest aperture of f/2.8, hence the obvious vignetting.

Files associated with this observation

comet lemmon with 4 satellites.jpg (1019.9 kB)

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