A Study of the Virgo Galaxy Cluster - Part 24: Sn 2021hiz in IC 3322A (Timothy Martin)

Celestial hemisphere: Northern · Constellation: Virgo (Vir) · Contains: IC 3322 · IC 789 · NGC 4365 · NGC 4366 · NGC 4370

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A Study of the Virgo Galaxy Cluster - Part 24: Sn 2021hiz in IC 3322A

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A Study of the Virgo Galaxy Cluster - Part 24: Sn 2021hiz in IC 3322A

Thanks to Jason Wait, who informed us on the ZWO ASI Cameras group on Facebook that we might have a picture of this supernova that was discovered on March 30 in IC 3322A, we found out that we had actually captured the Type 1a supernova Sn 2021hiz while shooting our 18-panel mosaic of the Virgo Galaxy Cluster. This is the first time we know of that we've actually acquired a picture of a supernova. We were also fortunate in that IC 3322A appears in the mosaic in the 20% overlap between panels 12 and 18. So that means we had twice the integration time as most of the rest of the mosaic. That's time we probably needed to get this result. Thanks again to Jason for pointing this out to us. It's a real treat!

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Final
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B

Description: We've picked apart the data we gathered between Feb 19 and Apr 11 and put together this gif of stacks from (1) Feb 19 to Mar 7, (2) Mar 8 to Mar 23, and (3) Mar 30 to Apr 11. It clearly shows Sn 2021hiz appearing in the last frame, but it's an open question as to whether anything is happening between the Mar 7 and Mar 23 frames. I can see some very slight brightening of the supernova region between the frames. But that could just be seeing or other optic aberrations. Nic and I have agreed that this is beyond our expertise. In any case, we do think we've captured the appearance of this supernova, and that's pretty darn cool.

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Status	Advanced success
Started	...
Astrometry.net job	4535353
PixInsight job	8AKWLEY4RQTS0U8NTQJWZA85XXTHPUK5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h25m20s.15
RA (top/left)	12h26m31s.60
RA (top/right)	12h24m08s.44
RA (bottom/right)	12h24m08s.82
RA (bottom/left)	12h26m31s.79

Dec (center)	+07°21′55″.6
Dec (top/left)	+07°35′03″.7
Dec (top/right)	+07°34′58″.9
Dec (bottom/right)	+07°08′44″.6
Dec (bottom/left)	+07°08′50″.2

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A Study of the Virgo Galaxy Cluster - Part 24: Sn 2021hiz in IC 3322A

A Study of the Virgo Galaxy Cluster - Part 24: Sn 2021hiz in IC 3322A

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A Study of the Virgo Galaxy Cluster - Part 24: Sn 2021hiz in IC 3322A

A Study of the Virgo Galaxy Cluster - Part 24: Sn 2021hiz in IC 3322A

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