Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  NGC 4203  ·  NGC 4227  ·  NGC 4229  ·  NGC4203  ·  NGC4227  ·  NGC4229
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SN 2021biz in NGC 4227, 


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SN 2021biz in NGC 4227

Imaging telescopes or lenses: Sky-Watcher QUATTRO-10CF 10" f/4 Newton Carbon

Imaging cameras: ZWO ASI 294MC Pro (cooled)

Mounts: Sky-Watcher EQ6-R Pro EQMOD

Guiding telescopes or lenses: Guidescope 60mm f=240mm

Guiding cameras: Datyson T7C Guidecam

Software: APP  ·  Noiseware Community Edition  ·  APT  ·  PHD2 Guiding

Accessory: GPU Optics Pal Gyulai CC

Dates:Feb. 20, 2021

Frames: 29x300" (gain: 120.00) -10C bin 1x1

Integration: 2.4 hours

Darks: ~25

Flats: ~33

Flat darks: ~33

Avg. Moon age: 8.02 days

Avg. Moon phase: 56.80%

Bortle Dark-Sky Scale: 4.00

Temperature: 3.00

Astrometry.net job: 4241508

RA center: 12h 16' 18"

DEC center: +33° 21' 4"

Pixel scale: 0.960 arcsec/pixel

Orientation: 12.833 degrees

Field radius: 0.668 degrees

Resolution: 4136x2814

Data source: Own remote observatory

Remote source: Non-commercial independent facility


Another supernova from my hunting night together with SN 2021do and SN 2021bbm.
The conditions were really bad. There was a lot of moisture in the air next to the crescent moon, which became a dense fog by 2 AM. Above the fog the seeing was not good either.
But it didn't matter. I decided to use the time for a couple of tiny galaxies decorated with a really big explosion.

In this case, NGC 4227 is tiny, but it has a small neighbor, NGC 4229 and many other faint fuzzies in the field. The eliptical galaxiy down left is NGC 4203 an the two red dots south if it are Quasars! Alltogether this three are astrobin debuts ;-)

What intrigues me most is the intense bluish color of the supernova, which shows up very well here (the image is just stretched and processed with the light pollution tool in APP).
More data to the SN itself: http://www.rochesterastronomy.org/supernova.html#2021biz