Embedded Files
Nova Observing Program
See the Slooh Scope tab above or click here for information on Slooh locations, scopes, presets, and weather/sky condition descriptions.
Requirements and Rules:
Silver certificate: 50 total observations of at least five different objects, with at least one object chosen from each of the three classes (Nova, Supernova, Dwarf Nova), and a minimum of two observations of each object.
Gold certificate and pin: 100 total observations (including those for the Silver Certificate) of at least ten different objects, with at least two objects from each of the three classes (Nova, Supernova, Dwarf Nova), and a minimum of two observations of each object.
Observations must include the object name/designation, estimated magnitude, your location including latitude and longitude, and the date and time (UT). All observations must also be submitted to AAVSO using their regular reporting facilities (WebObs or file upload). Click here for a detailed description of AAVSO reporting (in PDF format).
If observing visually, one field sketch is required of each object. Include at least four other stars in the field of view and identify at least two. Indicate magnitudes of the comparison stars used, and indicate North and either East or West on your sketch. Also indicate the ID of the AAVSO comparison chart, or the name of the other comparison chart used. For a Supernova within an external galaxy, also make a rough drawing of the galaxy, if visible. You may use the attached sketch log template (PDF format, Word format), or a sketch log sheet of your own design that provides all of the required information. In addition to the sketch log, you may also want to keep a log containing all your observations. Here is a sample Excel spreadsheet, or you may use one of your own design.
If using a CCD or imaging, follow the AAVSO procedures for submission. Photometry requires more expensive equipment and is more time consuming but can yield precision results that are not reachable by visual observers. See the "AAVSO Guide to CCD Photometry" for more details.
If an object you are observing does not appear in the AAVSO database, contact the Nova Observing Program Coordinator.
Image formats and post processing:
Slooh saves images in two formats: fits and jpgs. Slooh calibrates, stacks, and adjusts gamma based on preset prior to saving the image as a jpg. Fits are calibrated, saved but not stacked.
I used the Slooh provided fits files for all photometric images taken for this observing program. The actual images presented below are un-PhotoShoped Slooh jpgs. Slooh fits files don't have the target names in the fits headers so they were added with a Python script found here. The files were plate solved using MaximDL 5 and saved with updated WCS headers. The images were then loaded into the AAVSO's VPHOT where photometry (and time sequences for Dwarf Nova) was done. The resulting AAVSO Report text file was downloaded, edited to reflect the use of a luminance filter rather than V by changing the filter type to CV. The file was then uploaded to WebOBS and the results can be found here. My AAVSO observer code is BSCC.
Northern targets were imaged with Canary One (FOV = 37x37 arcminutes) using the MultiLuminance 20sec or 50sec preset based on how dim the target was. The 20sec preset usually gives eight twenty second luminance filter only images during the ten minute reservation. For Dwarf Nova the first, fourth, and last images were used giving a spacing of two minutes between the first and second images uploaded and three minutes between the second and third images uploaded. All SuperNova and Nova images were stacked before upload and photometry. No post processing was done to any image.
Southern targets were imaged with Chile On (FOV = 31x21 arcminutes) using the MultiLuminance 20 sec or 50 sec preset depending on brightness. Missions on this scope are five minutes and every other image was uploaded for dwarf nebula. All SuperNova and Nova images were stacked before upload and photometry. No post processing was done to any image.
Note: The long list of southern targets was chosen because of a three week long string of poor conditions in the Canary Islands.
In all images North is Up and East is to the Left. In the light curves below the arrow points to my observations.
Note: 168 observations submitted to the AAVSO with 14 total targets (9 Dwarf Nova, 3 SuperNovae, 2 Nova)
Dwarf Nova: (156 observations on 9 targets)
Dwarf Nova were chosen by searching the AAVSO's VSX for UG, UGSS, UGSU, UGWZ, and UGZ type novas.
The black arrow found at the left of the light curves below points to my data.
Calendar Date Magnitude Error
2021 Nov. 13.21132 14.218 0.014
2021 Nov. 13.20933 14.051 0.012
2021 Nov. 13.20789 14.253 0.014
2021 Nov. 13.19779 14.204 0.015
2021 Nov. 13.19579 14.219 0.014
2021 Nov. 13.19434 14.321 0.015
2021 Nov. 13.18294 14.011 0.017
2021 Nov. 13.18194 14.392 0.015
2021 Nov. 13.18052 14.627 0.021
2021 Nov. 13.16987 14.066 0.013
2021 Nov. 13.16789 13.97 0.012
2021 Nov. 13.16647 13.841 0.011
2021 Nov. 13.15560 13.686 0.010
2021 Nov. 13.15360 13.755 0.010
2021 Nov. 13.15216 13.743 0.010
2021 Dec. 12.20120 14.08 0.014
2021 Dec. 12.20215 14.128 0.014
2021 Dec. 12.20316 14.235 0.015
2021 Dec. 12.20416 14.165 0.016
2021 Dec. 12.21520 14.03 0.014
2021 Dec. 12.21616 14.04 0.013
2021 Dec. 12.21715 14.116 0.014
2021 Dec. 12.21815 14.101 0.013
2021 Dec. 12.22924 14.153 0.014
2021 Dec. 12.23019 14.31 0.016
2021 Dec. 12.23119 14.192 0.015
2021 Dec. 12.23219 13.955 0.013
2021 Dec. 12.24294 13.975 0.013
2021 Dec. 12.24388 14.206 0.015
2021 Dec. 12.24487 14.228 0.015
2021 Dec. 12.24588 14.188 0.015
2021 Dec. 12.25698 14.278 0.016
2021 Dec. 12.25793 14.116 0.014
2021 Dec. 12.25891 14.22 0.015
2021 Dec. 12.25992 14.325 0.017
1. U Gem
Telescope/Camera: Canary One
Exposures: 20 seconds with luminace filter
FOV 37x37 arcminutes
AAVSO UID 000-BBN-884 (204229 observations)
Constellation Gemini
J2000.0 07 55 05.21 +22 00 04.8 (118.77171 +22.00133)
Variability type UGSS+E
Spectral type pec(UG)+M4.5V
Mag. range 8.2 - 14.9 V
Period 0.1769061 d (4.24575 h)
UG Description:
U Geminorum-type variables, quite often called dwarf novae. They are close binary systems consisting of a dwarf or subgiant K-M star that fills the volume of its inner Roche lobe and a white dwarf surrounded by an accretion disk. Orbital periods are in the range 0.003-0.5 days. Usually only small, in some cases rapid, light fluctuations are observed, but from time to time the brightness of a system increases rapidly by several magnitudes and, after an interval of from several days to a month or more, returns to the original state. Intervals between two consecutive outbursts for a given star may vary greatly, but every star is characterized by a certain mean value of these intervals, i.e., a mean cycle that corresponds to the mean light amplitude. The longer the cycle, the greater the amplitude. The period given in VSX is usually the orbital period. Outburst cycles are given between parentheses. These systems are frequently sources of X-ray emission. The spectrum of a system at minimum is continuous, with broad H and He emission lines. At maximum these lines almost disappear or become shallow absorption lines. Some of these systems are eclipsing, possibly indicating that the primary minimum is caused by the eclipse of a hot spot that originates in the accretion disk from the infall of a gaseous stream from the K-M star. According to the characteristics of the light changes, U Gem variables may be subdivided into three types: SS Cyg-type (UGSS), SU UMa-type (UGSU), and Z Cam-type (UGZ).
Calendar Date Magnitude Error
1. 2021 Nov. 14.19751 14.689 0.019
2. 2021 Nov. 14.19600 14.73 0.021
3. 2021 Nov. 14.19451 14.615 0.019
4. 2021 Nov. 14.18362 14.714 0.021
5. 2021 Nov. 14.18209 14.809 0.024
6. 2021 Nov. 14.18060 14.517 0.018
7. 2021 Nov. 14.16976 14.759 0.022
8. 2021 Nov. 14.16824 14.743 0.021
9. 2021 Nov. 14.16676 14.826 0.023
10. 2021 Nov. 14.15583 14.804 0.023
11. 2021 Nov. 14.15431 14.713 0.020
12. 2021 Nov. 14.15282 14.686 0.021
13. 2021 Nov. 14.13481 14.798 0.023
14. 2021 Nov. 14.13280 14.846 0.024
15. 2021 Nov. 14.13137 14.867 0.023
2. SU UMa
Telescope/Camera: Canary One
Exposures: 20 seconds with luminace filter
FOV 37x37 arcminutes
AAVSO UID 000-BBP-267 (66907 observations)
Constellation Ursa Major
J2000.0 08 12 28.27 +62 36 22.4 (123.11779 +62.60622)
Variability type UGSU
Spectral type pec(UG)
Mag. range 10.8 - 16.0 V
Period 0.0763754 d (109.9806 min)
UGSU Description
SU Ursae Majoris-type variables. These are characterized by the presence of two types of outbursts called "normal" and "super-outbursts". Normal, short outbursts are similar to those of UGSS stars, while super-outbursts are brighter by 2 mag., are more than five times longer (wider), and occur several times less frequently. During super-outbursts the light curves show superposed periodic oscillations (super-humps), their periods being close to the orbital ones and amplitudes being about 0.2-0.3 mag. in V. Orbital periods are shorter than 0.1 days; companions are of dM spectral type. The period given in VSX is usually the orbital period. Outburst cycles are given between parentheses.
Calendar Date Magnitude Error
2021 Nov. 15.21836 13.634 0.01
2021 Nov. 15.21635 13.662 0.01
2021 Nov. 15.21493 13.65 0.01
2021 Nov. 15.19031 13.505 0.009
2021 Nov. 15.18833 13.602 0.009
2021 Nov. 15.18693 13.62 0.01
2021 Nov. 15.16954 13.541 0.009
2021 Nov. 15.16753 13.494 0.009
2021 Nov. 15.16610 13.517 0.009
2021 Nov. 15.14899 13.353 0.009
2021 Nov. 15.14699 13.335 0.009
2021 Nov. 15.14554 13.516 0.01
2021 Nov. 15.12825 13.605 0.011
2021 Nov. 15.12625 13.613 0.012
2021 Nov. 15.12483 13.526 0.011
3. Z Cam
3. Z Cam
Telescope/Camera: Canary One
Exposures: 20 seconds with luminace filter
FOV 37x37 arcminutes
AVSO UID 000-BBP-631 (146069 observations)
Constellation Camelopardalis
J2000.0 08 25 13.18 +73 06 39.1 (126.30492 +73.11086)
Variability type UGZ+N
Spectral type pec(UG)+K7V
Mag. range 10.0 - 14.5 V
Period 0.289841 d (6.9562 h)
UGZ Description
Z Camelopardalis-type stars. These also show cyclic outbursts, differing from UGSS variables by the fact that sometimes after an outburst they do not return to the original brightness, but during several cycles retain a magnitude between maximum and minimum. The values of cycles are from 10 to 40 days, while light amplitudes are from 2 to 5 mag. in V. The period given in VSX is usually the orbital period. Outburst cycles are given between parentheses.
Calendar Date Magnitude Error
1. 2021 Nov. 23.27183 13.805 0.023
2. 2021 Nov. 23.27078 13.868 0.026
3. 2021 Nov. 23.26550 14.090 0.027
4. 2021 Nov. 23.26443 13.897 0.026
5. 2021 Nov. 23.26336 14.016 0.026
6. 2021 Nov. 23.25444 13.987 0.025
7. 2021 Nov. 23.25330 13.945 0.025
8. 2021 Nov. 23.24777 14.086 0.026
9. 2021 Nov. 23.24667 13.918 0.025
10. 2021 Nov. 23.24134 13.939 0.025
11. 2021 Nov. 23.24028 13.799 0.022
12. 2021 Nov. 23.23917 13.941 0.025
4. VW Hyi
Telescope/Camera: Chile One
Exposures: 20 seconds with luminace filter
FOV 31x21 arcminutes
AAVSO UID 000-BBG-639 (160130 observations)
Constellation Hydrus
J2000.0 04 09 11.28 -71 17 41.4 (62.29700 -71.29483)
Variability type UGSU
Spectral type pec(UG)
Mag. range 8.4 - 14.4 V
Period 0.074271 d (106.950 min)
Calendar Date Magnitude Error
1. 2021 Nov. 25.30002 14.558 0.028
2. 2021 Nov. 25.29916 14.504 0.030
3. 2021 Nov. 25.29828 14.400 0.027
4. 2021 Nov. 25.28583 14.339 0.024
5. 2021 Nov. 25.28497 14.225 0.024
6. 2021 Nov. 25.28410 14.376 0.027
7. 2021 Nov. 25.26861 13.994 0.020
8. 2021 Nov. 25.26772 14.260 0.023
9. 2021 Nov. 25.26683 14.149 0.023
10. 2021 Nov. 25.25139 14.242 0.026
11. 2021 Nov. 25.25052 14.212 0.027
12. 2021 Nov. 25.24963 14.376 0.032
13. 2021 Nov. 25.23041 14.208 0.030
14. 2021 Nov. 25.22953 14.215 0.030
15. 2021 Nov. 25.22863 14.280 0.034
5. V1040 Cen
Telescope/Camera: Chile One
Exposures: 50 seconds with luminace filter
FOV 31x21 arcminutes
AAVSO UID 000-BCV-362 (9545 observations)
Constellation Centaurus
J2000.0 11 55 26.70 -56 41 52.0 (178.86126 -56.69778)
Variability type UGSU
Spectral type --
Mag. range 11.3 - 15.0 V
Period 0.060490 d (87.106 min)
Calendar Date Magnitude Error
2021 Nov. 26.23384 15.429 0.052
2021 Nov. 26.21311 15.448 0.047
2021 Nov. 26.21218 15.358 0.042
2021 Nov. 26.21126 15.169 0.037
2021 Nov. 26.19182 14.983 0.029
2021 Nov. 26.19086 15.095 0.031
2021 Nov. 26.17068 14.997 0.029
2021 Nov. 26.16979 15.378 0.044
2021 Nov. 26.15080 15.122 0.031
2021 Nov. 26.14984 15.088 0.032
2021 Nov. 26.14888 15.311 0.037
6. WX Hyi
Telescope/Camera: Chile One
Exposures: 50 seconds with luminace filter
FOV 31x21 arcminutes
AAVSO UID 000-BCW-146 (30027 observations)
Hydrus
J2000.0 02 09 50.82 -63 18 39.8 (32.46175 -63.31106)
Variability type U GSU
Spectral type pec(UG)
Mag. range 9.6 - 15.9 V
Period 0.074813 d (107.731 min)
Calendar Date Magnitude Error
2021 Nov. 29.15083 14.628 0.025
2021 Nov. 29.14997 14.569 0.022
2021 Nov. 29.14904 14.671 0.026
2021 Nov. 29.13631 14.626 0.026
2021 Nov. 29.13539 14.625 0.026
2021 Nov. 29.12281 14.612 0.025
2021 Nov. 29.12192 14.704 0.027
2021 Nov. 29.12104 14.602 0.027
2021 Nov. 29.10554 14.588 0.027
2021 Nov. 29.10457 14.549 0.026
2021 Nov. 29.10365 14.527 0.026
2021 Nov. 29.09149 14.724 0.028
2021 Nov. 29.09059 14.710 0.030
2021 Nov. 29.08968 14.829 0.031
7. V1159 Ori
Telescope/Camera: Chile One
Exposures: 50 seconds with luminace filter
FOV 31x21 arcminutes
AAVSO UID 000-BBJ-407 (64737 observations)
Constellation Orion
J2000.0 05 28 59.52 -03 33 52.9 (82.24800 -3.56469)
Variability type UGER
Spectral type --
Mag. range 12.5 - 16.0 p
Period 0.062178 d (89.536 min)
Calendar Date Magnitude Error
1. 2021 Nov. 30.21326 13.091 0.007
2. 2021 Nov. 30.21235 13.037 0.007
3. 2021 Nov. 30.21141 13.176 0.008
4. 2021 Nov. 30.18897 13.065 0.007
5. 2021 Nov. 30.18808 13.045 0.007
6. 2021 Nov. 30.18718 13.124 0.008
7. 2021 Nov. 30.16829 13.001 0.008
8. 2021 Nov. 30.16741 13.022 0.008
9. 2021 Nov. 30.16652 13.127 0.008
10. 2021 Nov. 30.15068 13.119 0.009
11. 2021 Nov. 30.14980 13.132 0.009
12. 2021 Nov. 30.14890 13.174 0.010
13. 2021 Nov. 30.12674 13.111 0.010
14. 2021 Nov. 30.12579 13.081 0.009
15. 2021 Nov. 30.12485 13.097 0.010
8. BV Pup
Telescope/Camera: Chile One
Exposures: 50 seconds with luminace filter
FOV 31x21 arcminutes
AAVSO UID 000-BBN-741 (9582 observations)
Constellation Puppis
J2000.0 07 49 05.26 -23 34 00.4 (117.27192 -23.56678)
Variability type UGSS
Spectral type K3V
Mag. range 12.9 - 15.7 V
Period 0.2650 d (6.36 h)
UGER Description
ER Ursae Majoris-type subclass of UGSU dwarf novae. These stars typically spend a third of their time in super-outburst with a super-cycle of 20-90 days. Outside of super-outburst they typically pack in a rapid succession of normal outbursts. The period given in VSX is usually the orbital period. Outburst cycles are given between parentheses. Amplitudes are smaller (around 3 mag.) than in other dwarf novae due to a higher mass transfer rate.
Calendar Date Magnitude Error
2021 Dec. 13.13348 16.089 0.030
2021 Dec. 13.13646 15.952 0.029
2021 Dec. 13.21484 16.007 0.034
2021 Dec. 13.21672 16.036 0.033
2021 Dec. 13.21970 16.072 0.033
2021 Dec. 13.22924 15.842 0.028
2021 Dec. 13.23116 16.068 0.034
2021 Dec. 13.23413 15.863 0.029
2021 Dec. 13.26395 15.752 0.036
2021 Dec. 13.26581 15.834 0.044
2021 Dec. 13.26881 15.749 0.049
2021 Dec. 13.27778 15.927 0.044
2021 Dec. 13.27966 15.822 0.032
2021 Dec. 13.28264 15.614 0.029
2021 Dec. 14.15958 16.091 0.035
2021 Dec. 14.16149 16.184 0.036
2021 Dec. 14.16449 16.062 0.037
2021 Dec. 14.24310 15.456 0.028
2021 Dec. 14.24501 15.606 0.031
2021 Dec. 14.24801 15.699 0.037
2021 Dec. 14.25885 15.484 0.025
2021 Dec. 14.27079 15.603 0.043
2021 Dec. 14.27270 15.525 0.038
2021 Dec. 14.27569 15.496 0.039
9. BZ UMa
Telescope/Camera: Canary One
Exposures: 50 seconds with luminace filter
FOV 37x37 arcminutes
AAVSO UID 000-BBP-990 (73734 observations)
Constellation Ursa Major
J2000.0 08 53 44.15 +57 48 40.6 (133.43396 +57.81128)
Variability type UGSU
Spectral type pec(UG)
Mag. range 10.5 - 15.3 B
Period 0.06799 d (97.91 min)
SuperNovae (8 observations on three targets)
Slooh images have been cropped to an unknown FOV for improved visibility of supernova.
Calendar Date Magnitude Error
1. 2021 Nov. 16.13929 13.742 0.015
2. 2021 Dec. 02.09102 12.016 0.005
3. 2021 Dec. 05.25399 12.403 0.017
4. 2021 Dec. 10.18796 12.365 0.010
getting brighter???
1. SN 2021aefx
Telescope/Camera: Canary One
Exposures: 50 seconds with luminace filter
FOV 37x37 arcminutes
AAVSO UID 000-BPF-486 (26 observations)
Constellation Dorado
J2000.0 04 19 53.32 -54 56 52.6 (64.97217 -54.94794)
Variability type SN Ia
Spectral type --
Mag. range >12.7 - <22 g
Period --
Calendar Date Magnitude Error
1. 2021 Jul. 22.31858 12.366 0.0061.
2. 2021 Dec. 02.10515 14.316 0.028
2. SN 2021rhu in NGC 7814
Telescope/Camera: Canary Two
Exposures: 50 seconds with luminace filter
FOV 37x37 arcminutes
AAVSO UID 000-BPB-553 (60 observations)
Constellation Pegasus
J2000.0 00 03 15.43 +16 08 44.5 (0.81429 +16.14569)
Variability type SN Ia
Spectral type --
Mag. range 13.2: - <22
After dimming--12/2/2021
Calendar Date Magnitude Error
1. 2021 Jul. 22.40193 13.861 0.014
2. 2021 Dec. 02.10803 17.142 0.078
3. SN 2021pit in NGC 1448
3. SN 2021pit in NGC 1448
Telescope/Camera: Chile Two
Exposures: 50 seconds with luminace filter
FOV 31x21 arcminutes
AAVSO UID 000-BNZ-784 (77 observations) Constellation Horologium
J2000.0 03 44 30.17 -44 37 57.1 (56.12571 -44.63253)
Variability type SN Ia
Spectral type --
Mag. range 12.6 - <22 V
Discoverer AS-SN
After dimming--12/2/2021
Nova (4 observations on two targets)
Nova were chosen by consulting Bill Gray's Galnovae site.
Calendar Date Magnitude Error
2021 Oct. 21.96833 7.577 0.014
2021 Dec. 11.87828 9.560 0.025
1. N Cas 2021/V1405 Cas
1. N Cas 2021/V1405 Cas
Telescope/Camera: Canary One
Exposures: 20 seconds with luminace filter
FOV 37x37 arcminutes
AAVSO UID 000-BNX-642 (50563 observations)
Constellation Cassiopeia
J2000.0 24 47.73 +61 11 14.8 (351.19887 +61.18744)
Other names Nova Cas 2021 Nova Cassiopeiae 2021
Spectral type --
Mag. range 5. - 15.6 V
Outburst 2021
Period .1883907 d (4.52138 h)
2. AT2022cpe
(rejected by program coordinator because data not submitted to the AAVSO)
No new novas reported for over two months that could be captured Slooh scopes exposure.
Finally on 2/16/2022 I saw notification of Extragalactic Nova AT2022cpe (= XM65MZ) (= PNV J00425751+4059043), on https://www.rochesterastronomy.org/novae.html. (see left)
"AT2022cpe (= XM65MZ) (= PNV J00425751+4059043), TNS discovered 2022/02/16.423 by Koichi Itagaki; Xingming Observatory Sky Survey (XOSS) Found in M31 at R.A. = 00h42m57s.500, Decl. = +40°59'04".20 Located 148".6 east and 1024".3 south of the center of M31 (Itagaki discovery image) (Discovery images) Mag 16.2:2/16, Type unknown (References: CBAT TOCP)"
At magnitude 16.2 I thought it might be possible so I scheduled a Slooh mission at the first available opportunity and also asked a friend with a remote observatory in NM to capture it to verify my results. Data from the scheduled mission is below. My friend's NM observations confirmed the very dim nature of this nova.
AAVSO Finder Chart
Field from before nova from a sky survey image
My Slooh Image
M31 is the bright blob and M32 is the ball at the bottom.
(Pasted close up area in upper left corner with the yellow line pointed to the area of the nova)
Note the location of nova relative to M32
There was a massive stretch in the Slooh images to an unknown field of view and brightness. The final Slooh stack was six subs, each 50 seconds long with L filter through the Canary Island One scope on 2/17/2022 between 21:06 UT and 21:12 UT. 50 seconds is the maximum length for Slooh exposures.
I ran the Slooh image through VPhot but I'm not happy with the result. The S/N ran as low as 12 in the images (the AAVSO likes values greater than 20). The nova is in M31 and it contributes significantly to the background. There are many magnitude 15-16 comp stars in the area and they show as points in the image while the nova is a fuzzy blob. Quite frankly I think the photometry is bad. Various VPhot attempts suggest 16.7-17.4 with an error of .10 to .21, much too large for me to submit considering it isn't listed in the AAVSO's database.
Both my friend and I estimate that the nova is actually dimmer than magnitude 18 even though it was reported to be 16.8 on the date of my first observation by http://www.cbat.eps.harvard.edu/unconf/followups/J00425751+4059043.html If I had to submit I'd say dimmer than magnitude 17.
I will follow this nova for the next few days.
2022 02 16.5784 Mi Zhang, Xing Gao (Xingming Obs), report the independent discovery of a possible nova at 16.2 CV on several 300-s survey images (limiting mag about 17.5 CV) taken by Xing Gao at Xingming Observatory “#”3 (N88) around Feb. 16.57841, 2022 UT using using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope).
2022 02 17.383 Mag.= 16.9, position end figures 57s.51, 04".7 observed by T. Noguchi, Katori, Japan, using 0.23-m f/10 Schmidt Cassegrain + unfiltered CCD (KAF-0261E),
2022 02 17.415 F. Watanabe (Nayoro Observatory, Hokkaido, Japan) measured the magnitude as R=17.0 +/- 0.1 from a stacked image (30 sec x 20 frames) taken on 2022 Feb. 17.415 UT using a 0.4-m f/10 Meili telescope.
My results from VPhot
Target Mag Err Std Err(SNR) SNR Sky
Date/Time: 2022-02-17 21:07:16
AT2022cpe 16.801 0.077 0.042 0.064 16 13,865
AT2022cpe 16.805 0.105 0.065 0.082 13 13,849
(The first as a single imaged processed and the second as a time series with the nova below as primary)Date/Time: 2022-02-18 21:17:04
AT2022cpe 17.303 0.077 0.040 0.066 16 8,254
2022-02-19 to 2022-02-22 bad weather in Canary Islands
AT2022cpe 18.939 0.228 0.030 0.226 4 4,700
After 7 1/2 months a new nova reported: U Sco
After 7 1/2 months a new nova reported: U Sco
Showing the outburst.
Enlarged to show my observations
Calendar Date Magnitude Error
2022 Jun 9.1504 9.585 0.045
2022 Jun. 10.15778 9.901 0.004
2. U Sco outburst reported 6/5/2022
2. U Sco outburst reported 6/5/2022
Telescope/Camera: Canary One
Exposures: 20 seconds with luminace filter
FOV 37x37 arcminutes
AAVSO UID 000-BBX-412 (32312 observations)
Constellation Scorpius
J2000.0 16 22 30.78 -17 52 42.8 (245.62825 -17.87856)
Other names
Spectral type pec(e)
Mag. range 7.5 - 19.3 V
Outburst 2022
Period 1.23054695 d
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