Closest and brightest supernova for over a decade. Using a Triband filter to reduce twilight glare. ASTAP measurement gives me a supernova mag. of 11.3.
| Object ID | M101 Supernova 2023ivx |
| Details | 2023-05-24 32:15 UT (mid) |
| Telescope | 250mm f4.8 Newtonian MPCC |
| Camera | QHY168C @-10°C |
| Filters | Altair triband |
| Exposure(s) | 10 x 300s |
| Capture | NINA |
| Processing | APP, Photoshop |
I get a V mag of 14.7. Small galaxy but obvious supernova.
“2022aaiq (= 2022acsj) (= ZTF22abvmgtl), TNS discovered 2022/11/15.057 by Patrick Wiggins
Found in NGC 5631 at R.A. = 14h26m32s.000, Decl. = +56°35’10”.00
Located 10″.7 west and 12″.5 north of the center of NGC 5631 ”
https://www.rochesterastronomy.org/supernova.html#2022aaiq
| Object ID | 2022aiqq in NGC 5631 |
| Details | 2022-12-21 00:03 UT |
| Telescope | 250mm f4.8 Newtonian, MPCC |
| Camera | Atik 460EX @-10°C |
| Filters | Baader V |
| Exposure(s) | 6x180s |
| Capture | NINA |
| Processing | APP, Photoshop, ASTAP |
2022hrs (= ATLAS22mip), TNS discovered 2022/04/16.619 by Koichi Itagaki
Found in NGC 4647 at R.A. = 12h43m34s.350, Decl. = +11°34’36”.00
Located 30″.0 east and 18″.7 south of the center of NGC 4647
Galaxy is about mag. 12.5, supernova about mag. 14.1 R using photometry with ASTAP.
| Object ID | Supernova 2022hrs |
| Details | 2022-04-18 23:20 UT |
| Telescope | 250mm f4.8 Newtonian R filter |
| Camera | Atik 460EX @-10 °C |
| Exposure(s) | 3 x 180s d,f,b |
| Capture | NINA |
| Processing | Photoshop, ASTAP |
Here’s the light curve from the BAA VSS database, including some of my observations (the very first red point – bottom left – is mine, as are some of the V CCD measurements).
2022ewj (= ATLAS22jhw), TNS discovered 2022/03/19.544 by Koichi Itagaki
Found in NGC 3367 at R.A. = 10h46m34s.630, Decl. = +13°45’16”.98
Galaxy is about mag. 12, supernova about mag. 16.3 R using photometry with ASTAP.
| Object ID | Supernova 2021ewj |
| Details | 2022-03-22 22:31 – 22:42 UT Hazy skies |
| Telescope | 250mm f4.8 Newtonian R filter |
| Camera | Atik 460EX @-10 °C |
| Exposure(s) | 5 x 180s d,f,b |
| Capture | NINA |
| Processing | APP, Photoshop, ASTAP |
2021agpf (= ATLAS21bnoc), TNS discovered 2021/12/26.624 by ATLAS
Found in NGC 5732 at R.A. = 14h40m37s.708, Decl. = +38°37’56”.31
Galaxy is about mag. 14, supernova about mag. 17.3 using photometry with ASTAP.
| Object ID | Supernova 2021agpf |
| Details | 2022-03-16 22:19 – 22:47 UT Strong moonlight |
| Telescope | 240mm f4.8 Newtonian R filter |
| Camera | Atik 460EX @-10 °C |
| Exposure(s) | 10 x 180s d,f,b |
| Capture | NINA |
| Processing | APP, Photoshop, ASTAP |
Quick image of supernova SN2020hvf and simple photometry in Muniwin. Gives an R (TR) magnitude of 12.38
| Object ID | SN2020hvf Type Ia Supernova in NGC3643 |
| Details | 2020-05-10 22:42UT |
| Telescope | 250mm f4.8 Newtonian |
| Camera | Atik 460EX @-15C |
| Exposure(s) | 120s 2×2 Baader TR filter |
| Capture | APT |
| Processing | Nebulosity, Muniwin |
| Object ID | SN 2020ue NGC 4636 |
| Details | 2020-01-19 01:12:57 UT Muniwin gives mag. as 12.56 RA = 12 42 47 DEC = +2 39 35 FWHM = 2.77 pxl Sky = 1708.31 ADU Sky dev. = 50.19 ADU Net intensity = 94384.6 ADU Noise = 271.5 ADU S/N ratio = -25.4 dB Brightness = 12.5627 mag Error = 0.0031 mag |
| Telescope | 250mm f4.8 OO Newtonian |
| Camera | Atik 460EX @-15C |
| Exposure(s) | 5x120s 2×2 TR |
| Capture | APT |
| Processing | Nebulosity, Muniwin |
First supernova for me.
| Object ID | SN 2018 ivc in M77 Type II supernova |
| Details | 2018-12-03 22:10 – 22:39 UT |
| Telescope | 250mm f4.8 Newtonian, MPCC, IDAS P2 |
| Camera | Atik 460EX at -20C |
| Exposure(s) | L 10x90s 1×1 |
| Capture | APT |
| Processing | Nebulosity, Photoshop |
