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Three new bright supernovae to look out for (IC3322A/SN2021hiz & NGC3310/SN2021gmj & NGC5018/SN2021fxy)By alanjgreen
I was out hunting the latest supernovae on 1st April and observed the following SN's
- SN2021hiz in IC3322A (discovered 30th March and now at mag 14.9)
Checking the latest images this morning, I see that the dot out on the tip (in my sketch) was the new SN.
- SN2021gmj in NGC3310 (discovered 20th March and now at mag 15.6)
This is a nice SN sitting on the end of a faint spiral arm.
Both have not reached their peak brightness yet so should still get brighter.
There is another bright SN but its too low for me to get at from my obsy shed
It is SN2021fxy found in NGC5018, current brightness is mag 14.2
Have a look with these lovely clear skies that we have at the moment...
Here are my SN targets for next week (weather permitting)...
1.NGC 3643, SN2020hvf, Mag 12.4 (observed on 27th April & 8th May)
2.M61, SN2020jfo, Mag 14.5 (observed on 8th May)
3.NGC 6118, SN2020hvp, Mag 14.6
4.UGC 10561, SN2020hvq, Mag 15.9
5.PGC 056685, SN2020fhs, Mag 16.1
(Remember to rotate the finder charts 180 degrees to match the view to a dob)
With clear nights forecast next week and the moon getting later to rise 😀, I have done some SN research this morning to id some targets for next week...
Here are some scans of my research notes and star charts for use next week...
I will be targeting the following new SN:
AT2020ftl, NGC4277, Mag 14.9 SN2020dko, NGC5258, Mag 16.6 AT2020enm, IC1222, Mag 16.7 SN2020fqv, NGC4568 (Siamese Twins), Mag 15.3 SN2020fcw, NGC5635, Mag 16.1 SN2020ees, NGC5157, Mag 16.5
Report of my Virgo supernova hunting from 0200-0400 on morning of Jan 19th 2020.
Equipment: 20" dobsonian f3.6. Televue Delite 18.2mm & PVS14 night vision device.
Outcome: 4 supernovae observed successfully.
NGC4441 & SN2019yvq - Supernova obvious and immediately seen. Held in direct vision close in to the core.
M100 & SN2020oi - Bright supernova outshines the core close in and is easily split from the core too. Decent amount of galaxy shape and faint arm structure fills the fov.
NGC4636 & SN2020ue - This is a little trickier as you need to determine which "star" is the supernova. But the supernova "star" is the brightest of the patch of five it sits within. Use the two brightest stars just outside the core to orientate yourself (images were upside down for me). The faint star closest to the core is the hardest to spot and was intermittent for me. The next 2 stars from the core are the most obvious (and the SN is one of these 2). The final 2 stars in the group of five take some staring to get to see but once you locate them you can continue to see them.
NGC4666 & SN2019yvr - The toughest of the bunch! The galaxy is huge and clear in the fov. There is a group of 3 tight stars above (for orientation purposes) and the SN is located underneath away from the flat disk. I had to wait a few seconds before I got a brief glimpse of the SN as the galaxy drifted across the view. I glimpses it 4 more times during my time letting it drift across the fov. A toughie for sure.
Hope this helps others find them,
Scope: 20” f3.6 Lukehurst Dob with Paracorr (fl = 2089mm & f4.1).
Night Vision: PVS-14 with Photonis 4g INTENS.
Eyepieces: DeLite 18.2mm (f5.8 x115).
I was out supernovae hunting last night with three SN targets planned
I am happy to report that I observed 2 out of 3. Here are some notes to help others.
NGC109 / SN2019upw
This one is fairly straightforward as there are few field stars in the area. Once you find the three brighter stars in a triangle then the galaxy is easily seen in the centre. There are 4 faint stars on one side of the galaxy and one on the other. The SN is separate from the core. As I was only using x115 magnification then the split was not straightforward and time was needed to wait and observe for the split to come and go!
This galaxy was really well placed at the zenith at around 1830 last night. The galaxy was not seen but the SN is there. It takes time to find the right spot but there is a field star "3D cube" just above, once you find the cube then you can find the SN. (See stars marked A,B,C,D on my diagram, the Supernova is X).
This is the toughest, there are so many field stars that it is hard to find what to match to the internet images. Anyway, it turned out that I was looking in the wrong place but the stars I drew do match the images so I was just a small way off.
Look carefully at my sketch and there are two rows of field stars (the 3+2 and the 3, the middle star of the lower 3 is a double), if you can find these two rows of stars at the eyepiece then the SN is in-between these rows as shown by the blue box (added this morning). I was looking further up in a tight cluster of stars where the tiny galaxy appeared to be (my mistake!).