Six Supernova challenge anyone?

[alanjgreen]

Supernovas in Ursa Major seem a common occurrence this month  Here's another new one (SN2018rv) located near the Plough in NGC3147! (Now been classed as a NOVA)

AT2018rv (= CP Dra?), TNS discovered 2018/02/11.267 by Patrick Wiggins  Found in NGC 3147 at R.A. = 10h15m39s.900, Decl. = +73°26'04".83  Located 315".7 west and 122".1 north of the center of NGC 3147 (Discovery image) (Giancarlo Cortini image)  Mag 15.0:2/11, Type unknown (zhost=0.009346) (References: SN 2008fv, 2006gi, 1997bq, 1972H)

 

 

These two are mag15, so will be worth a crack too

2018pc, TNS discovered 2018/02/03.750 by Tsinghua-NAOC Transient Survey (TNTS)  Found in UGC 5049 at R.A. = 09h28m55s.170, Decl. = +49°14'17".30  Located 3".0 west and 2".0 south of the center of UGC 5049 (Yasuo Sano image) (Robert Spellman image) (Yuji Tanaka image) (Rafael G. Farfán image)  Mag 15.0:2/8, Type Ia (z=0.009) (zhost=0.009000) (References: ATEL 11267, ATEL 11268)

2018gj, TNS discovered 2018/01/12.242 by Patrick Wiggins  Found in NGC 6217 at R.A. = 16h32m02s.400, Decl. = +78°12'41".13  Located 112".8 west and 47".7 north of the center of NGC 6217 (Discovery image)  Mag 15.0:2/9 (14.4:1/15), Type II (zhost=0.004543) (References: ATEL 11172, OSC)  2018gj images sub-page

I had a crack at 2018gj two weeks back but the scope was not best placed in the shed, time for a revisit as I have now repositioned nicely for the Plough..

 

2018pv (= AT2018pu), TNS discovered 2018/02/03.631 by Masaki Tsuboi  Found in NGC 3941 at R.A. = 11h52m55s.700, Decl. = +36°59'11".60  Located 4".1 east and 0".8 north of the center of NGC 3941 (K. Itagaki image) (Giancarlo Cortini image) (K. Itagaki image) (Manfred Mrotzek image) (K. Itagaki image)  Mag 12.7:2/9, Type Ia (z=0.003100) (References: ATEL 11278)

I bagged sn2018pv last night (see other post)

 

And while we are at it... slightly dimmer

(in LEO)

2018kp (= SNhunt343), TNS discovered 2018/01/24.362 by Catalina Real-Time Transient Survey and Mishevskiy  Found in NGC 3367 at R.A. = 10h46m33s.060, Decl. = +13°44'31".00  Located 27".6 west and 32".1 south of the center of NGC 3367 (Discovery image)  Mag 15.7:2/10, Type Ia (zhost=0.010142) (References: OSC; SN 2007am, 2003aa, 1992C, 1986A)  2018kp images sub-page

(in Ursa Major)

2018iq (= AT2017jzx), TNS discovered 2018/01/19.494 by Koichi Itagaki  Found in NGC 2746 at R.A. = 09h05m59s.780, Decl. = +35°22'24".00  Located 4".2 east and 14".6 south of the center of NGC 2746 (Discovery image) (Kunihiro Shima image) (Andrea Mantero image) (Rafael G. Farfán image) (Yasuo Sano image) (Kunihiro Shima image) (Claudio Balcon image) (Yuji Tanaka image)  Mag 16.1:1/25, Type Ia (z=0.0235) (zhost=0.023566) (References: ATEL 11219, OSC)

[xboxdevil]

Thanks for sharing!

[alanjgreen]

After some searching, we now have 5 SN and a Nova to go for. Supernova marathon anyone?

[andrew63]

Well in my dreams....   Just been looking at star clusters.  It's a lovely night, so hope you have a blast !

 

andrew

[Paul73]

Sounds like a decent astroquest! 

These might be a bit beyond my eye/scope/sky combination (doesn’t mean that I won’t be trying.....)

Good luck. Keep us posted on progress.

Paul

[goodricke1]

Another illustration of the vastness of the cosmos is that these are a dime a dozen for the large telescope surveys, and yet we are waiting 414 years for a visible one in our own Galaxy.

[alanjgreen]

Extract from last nights session where I bagged three supernovas

UGC5049/SN2018pc – with the ethos8 (x250) inserted I centred up on UGC5049. The galaxy was a faint streak at the edge of the fov. Straight away there was a faint dot visible within the dusty streak! The star pattern matched my sketch and therefore a notched up a success.

 

NGC2746/SN2018iq – The galaxy was easily found and centred. The SN is tight in but was coming and going as the galaxy drifted across the fov. I switched to the E10 (x200) and the galaxy got brighter, I could see the SN near the centre. 

 

NGC3941/SN2018pv – I had seen the SN on Sunday, so back for another visit. With the E10 the bright SN was hard to split from the bright core. With the E8 a clear separation was seen and so another success.

 

NGC3367/SN2018kp – NGC3367 was located under Leo and I had a short opportunity to get it over the shed wall (not with the whole mirror). I quickly matched the field stars to my sketch and saw a bright dot coming from within the area of the faint galaxy. I switched between the E10 and E8. At one point a saw two dots within the galaxy dust and tried to draw two lines showing the dot orientation compared to the field star orientation. These don’t seem to match the images when I check this morning. The core appears as a bright dot so it seems more likely that I was seeing the galaxy core rather than the SN. But checking an image from 10 Feb, the SN has brightened but I cant say I had success at this point.  I will try again…

 

[robin_astro]

On 2/14/2018 at 11:43, alanjgreen said:

Extract from last nights session where I bagged three supernovas

UGC5049/SN2018pc – with the ethos8 (x250) inserted I centred up on UGC5049. The galaxy was a faint streak at the edge of the fov. Straight away there was a faint dot visible within the dusty streak! The star pattern matched my sketch and therefore a notched up a success.

 

SN2018pc?   That is one that I confirmed spectroscopically :-)

https://wis-tns.weizmann.ac.il/object/2018pc/classification-cert

Here is how it looked in the spectrograph guider 2018-02-06

Cheers

Robin