A type II mag 13.7 (ZTF g) at maximum
ALPY 200 spectrum
https://britastro.org/specdb/data_graph ... s_id=16154
SNID match
https://britastro.org/specdb/view_image ... s_id=16154
Search found 1960 matches
- Wed May 22, 2024 10:21 pm
- Forum: Supernovae
- Topic: AT 2024iss - a probable SN in a nearby dwarf galaxy
- Replies: 1
- Views: 103
- Wed May 22, 2024 11:30 am
- Forum: Supernovae
- Topic: supernova SN 2023ixf in M101 !
- Replies: 10
- Views: 229917
Re: supernova SN 2023ixf in M101 !
Now a year old so here is a spectrum in the nebula phase at V mag ~18 (tough in moonlight and the twilight skies here at this time of year) SN2023ixf_20240518_poster.png Here is the animation from September 2023 - February 2024 showing it moving into the nebular phase 20240215_143932_2cb43a334f03.gi...
- Mon May 13, 2024 7:47 pm
- Forum: Supernovae
- Topic: AT 2024iss - a probable SN in a nearby dwarf galaxy
- Replies: 1
- Views: 103
AT 2024iss - a probable SN in a nearby dwarf galaxy
https://www.wis-tns.org/object/2024iss
In a faint nearby dwarf galaxy. Already r mag 14 and rising fast this morning according to TNS so could be a bright one
Robin
In a faint nearby dwarf galaxy. Already r mag 14 and rising fast this morning according to TNS so could be a bright one
Robin
- Mon Apr 29, 2024 6:52 pm
- Forum: Supernovae
- Topic: SN 2024hig in UGC4958 ALPY200 classified type Ia
- Replies: 0
- Views: 202
SN 2024hig in UGC4958 ALPY200 classified type Ia
https://www.wis-tns.org/object/2024hig
At mag 17.5 with the ALPY200, over 3 years since my last official SN classification
Robin
At mag 17.5 with the ALPY200, over 3 years since my last official SN classification
Robin
- Sun Apr 28, 2024 5:43 pm
- Forum: Supernovae
- Topic: SN 2024ggi a nearby type II supernova in NGC3621 (Dec -32 deg)
- Replies: 17
- Views: 1721
Re: SN 2024ggi a nearby type II supernova in NGC3621 (Dec -32 deg)
How bright did it get at maximum? I am still able to follow SN 2023ixf into the nebular phase almost a year old now with the ALPY200 currently at mag 17.5 https://britastro.org/specdb/data_graph.php?obs_id=16058%2C15738%2C15361%2C14880&multi=yes Here is the latest fit using SNID SN2023ixf_202404...
- Mon Apr 22, 2024 1:39 pm
- Forum: Spectroscopes and Softwares
- Topic: Wavelength Calibration Relco
- Replies: 6
- Views: 37684
Re: Wavelength Calibration Relco
I will be interested to see what you find. I still have the same issue. I use ISIS which gives a good fit using auto calibration using the calibration lamp but gives an increasing offset towards the blue on stars. I noticed among spectra collected during a STAROS campaign that some ALPY users seem t...
- Wed Apr 17, 2024 2:24 pm
- Forum: Supernovae
- Topic: SN 2024ggi a nearby type II supernova in NGC3621 (Dec -32 deg)
- Replies: 17
- Views: 1721
Re: SN 2024ggi a nearby type II supernova in NGC3621 (Dec -32 deg)
Good try Tom ! Type II can be almost featureless at this stage. It will probably develop with time though. Compare with SN 2023ixf for example week 1 https://britastro.org/observations/observation.php?id=20230528_140227_583fe05370c08912 week 2-3 https://britastro.org/observations/observation.php?id=...
- Thu Apr 11, 2024 10:13 pm
- Forum: Supernovae
- Topic: SN 2024ggi a nearby type II supernova in NGC3621 (Dec -32 deg)
- Replies: 17
- Views: 1721
SN 2024ggi a nearby type II supernova in NGC3621 (Dec -32 deg)
SN 2024ggi a nearby type II supernova in NGC3621 (Dec -32 deg) https://www.wis-tns.org/object/2024ggi It was discovered last night, is rising rapidly and is generating a lot of interest. NGC3621 is at a similar distance to SN 2023ixf in M101 which reached V mag 11 last year so if you are far enough ...
- Tue Apr 02, 2024 10:01 pm
- Forum: Miscellanous
- Topic: AT 2024fjh -another LMC nova?
- Replies: 4
- Views: 480
- Wed Mar 20, 2024 1:50 pm
- Forum: Miscellanous
- Topic: AT2024epj - A mag 10 transient in/near the LMC
- Replies: 12
- Views: 3165
Re: AT2024epj - A mag 10 transient in/near the LMC
And this is what I've managed with an Alpy. I suspect it's a little fainter than the 10th magnitude it has been estimated at. Similar result of about +/- 4200 km/s for the expanding shell. Yes the latest report on TNS suggests it is fading rapidly 2024-03-18 18:34:24.000 11.56 (sloan g) Robin