A breaking comet

Update:23.04.20, mag 9,0?*

Comet AY4, only 'cloud' - no fragment observable

A little 'deep space': NGC 3079

Update:16.04.20, mag 9,0?

Comet AY4 with double front-fragment'

20:09 - 21:14 UT, 65x55sec, ISO 3200, 12.5" Newton 1900mm, crop ca.10x /2.5x, Sony a7III

21:30 UT, 4x116sec, ISO 1600, 12.5" Newton 1900mm, crop ca.3x, Sony a7III

Update:14.04.20, mag 9,0?*

Comet AY4 with 'front fragment'

   

Up/Left:20:50 UT, 18x55sec, ISO 3200, crop ca.3x    Ri:20:55 UT, 3x55sec, ISO 1600, crop ca.1,5x

All:12.5" Newton 1900mm, Sony a7III

Update:12.04.20, mag 9,0

Comet looses 2 mag, survival of perihelion not sure. This don't look good.

Update:10.04.20, mag 9,0?

Comet broke since 04/09/20 in may 3-5 fragments .

NGC 2403

Update: 09.04.20, mag 9,5 ???

Newton 12,5", 1900mm, Iso 3200, 3x30sec, Sony a7III

Update: 02.04.20, mag 7,5*

Newton 8", 900mm,

6x74 sec , ASA 1600, Sony a7III

18.03.20, mag 8,5*

40 sec , ASA 3200, Sony a7III

*mag  = > light magnitude: Up to mag +3 or +4 stars are visible nearby cities with the naked eye, in very dark areas the seeing limit can reach up to mag + 6-7.

The more higher numerical value is given, the more weaker are the objects. E.g. - 4,7 mag, Venus glittering; - 1,0 Sirius, brightest star; + 3,5 M31 Andromeda, pale shiny oval)

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All comet observations from 2001 up to now ..

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