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Observation by Colin Henshaw: Comet C/2018 Y1 Iwamoto

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Colin Henshaw


Colin Henshaw


2019 Feb 08 - 17:28


2019 Feb 09 - 05:51


C/2018 Y1 (Iwamoto)

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Field centre

RA: 11h29m
Dec: +02°53'
Position angle: -64°35'

Field size

3°35' × 2°29'

  • Canon 6D camera
  • 135mm Carl Zeis telephoto.

1 sec at 8000ASA and f5.6.


Briga Township, Tabuk, Kingdom of Saudi Arabia

Target name

Comet C/2018 Y1 Iwamoto


Comet C/2018 Y1 Iwamoto

About this image

The comet was fainter than I expected, (you can barely see it) being no more than about eighth magnitude. Located near Tau Leonis, it was not too difficult to find. Several exposures were taken, with a range of ASA values, but this one seemed to be the best. No suggestion of a tail. The comet is close to opposition so any tail would be pointing away from us. On the image, the comet is revealed as a faint smudge, in the ten o'clock position relative to the faint tenth magnitude star TYC 274-134-1.

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