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Proposal #627
| Proposer | (35150) Dr. Pradip Karmakar (pradipkarmakar39@gmail.com) obscode: KPRB |
|---|---|
| Assigned To | (3663) Dirk Terrell |
| Date Submitted | July 17, 2025 |
| Status | Allocated |
| Priority | Normal |
| Proposal | Dear Sir, Target RA (H.HH) Dec (D.DD) Magnitude Filter used: V With regards, |
Targets
| Target Name | RA (H.HH) | Dec (D.DD) | Magnitude | Observation Frequency | Expiration Date | Proprietary Term |
|---|---|---|---|---|---|---|
| VX Per | 2.130133 | 58.44353 | 8.99–9.69 | 1 | Jan. 30, 2026 | No |
| SZ Cas | 2.453825 | 59.46061 | 9.61–10.03 | 1 | Jan. 30, 2026 | No |
| SV MON | 6.357308 | 6.47017 | 7.61–8.88 | 1 | Jan. 30, 2026 | No |
| T MON | 6.420278 | 7.08572 | 5.58–6.58 | 1 | Jan. 30, 2026 | No |
| zet Gem | 7.068481 | 20.57031 | 3.62–4.18 | 1 | Jan. 30, 2026 | No |
| RU Cam | 7.362255 | 69.67075 | 8.1–9.1 | 1 | Jan. 30, 2026 | No |
| X Pup | 7.546397 | -20.90969 | 7.86–9.17 | 1 | Jan. 30, 2026 | No |
| W VIR | 13.433886 | -3.37872 | 9.46–10.75 | 1 | Jan. 30, 2026 | No |
| AL VIR | 14.185847 | -13.31067 | 9.1–9.92 | 1 | Jan. 30, 2026 | No |
| RX LIB | 15.700015 | -20.77942 | 11.6–13.4 | 1 | Jan. 30, 2026 | No |
| AV SGR | 18.080217 | -22.73244 | 10.67–12.1 | 1 | Jan. 30, 2026 | No |
| RU SCT | 18.698995 | -4.11067 | 8.84–9.96 | 1 | Jan. 30, 2026 | No |
| Z SCT | 18.715911 | -5.82089 | 9.05–10.16 | 1 | Jan. 30, 2026 | No |
| V336 AQL | 19.022147 | 0.14703 | 9.5–10.28 | 1 | Jan. 30, 2026 | No |
| SZ Aql | 19.077617 | 1.30617 | 7.92–9.2 | 1 | Jan. 30, 2026 | No |
| TT Aql | 19.137153 | 1.29867 | 6.53–7.65 | 1 | Jan. 30, 2026 | No |
| SV Vul | 19.858586 | 27.46025 | 6.72–7.79 | 1 | Jan. 30, 2026 | No |
Comments
- (3663) Dirk Terrell — July 17, 2025, 8 p.m.
The TAC will have several questions:
1) What is the desired cadence of the observations?
2) How long does each system need to be observed? Weeks? Months?
3) Have you looked to see if these systems have been observed by projects like ASAS-SN?
4) What is the motivation for making these observations?In order to maximize the scientific return, we would like to see observations made in multiple filters like BVI.
- (35150) Dr. Pradip Karmakar — July 18, 2025, 6:38 a.m.
Dear Sir,
Here are my answers.
1) Exposure time: 10sec-60sec
2) Start date: 21st July'25
End date: 31st July'26
3) I must see the ASAS-SN database for the observations records
of the target stars
4) I would like to re-analysis like Craggy T. 1972, JAAVSO.
Previous that I would like to use VPhot and VStar for photometry and time of maximum brightness.I am requesting you to use BVI filters for observations purposes.
With regards,
Pradip Karmakar
P- (3663) Dirk Terrell — July 22, 2025, 5:58 p.m.
#1 was about cadence, not exposure time, cadence meaning one set of observations per day, once per week, etc.
- (35150) Dr. Pradip Karmakar — July 22, 2025, 7:49 p.m.
cadence is 12 observations per day if possible.
- (3663) Dirk Terrell — July 23, 2025, 4:17 p.m.
It would help us immensely if we better understand what you are trying to achieve. 12 observations per day is a lot for longer period systems like these and difficult for us to schedule. Cepheids have pretty smooth light curves, so dense sampling doesn't seem necessary but knowing what exactly you are trying to do with these data would help us understand what is really necessary.
- (35150) Dr. Pradip Karmakar — July 23, 2025, 4:40 p.m.
Dear Sir,
My intention is to follow up the Cragg T. 1972 JAVSO paper. I would like to find the time of maximum light with the recent observations. Regarding cadence of the observations is upto you. That's which you feel better for this purpose. I am requesting you just only use V and I filters for observations. Hope you consider my proposal.
With regards,
Pradip Karmakar- (3663) Dirk Terrell — July 30, 2025, 2:44 p.m.
Ok, how about we observe a few of the targets that are currently visible once per day and see how that goes? Then we can see if that works well enough for your needs.
- (35150) Dr. Pradip Karmakar — July 30, 2025, 3:23 p.m.
Dear Sir,
I am agree with you good suggestions.
With regards,
Pradip Karmakar- (35150) Dr. Pradip Karmakar — Aug. 1, 2025, 6:01 p.m.
Dear Sir,
Should I get that observations in BVI filters or in V filter only?
With regards,
Pradip Karmakar- (3663) Dirk Terrell — Aug. 1, 2025, 8:57 p.m.
We would prefer to get BVI observations to enhance the scientific return.
- (4726) Kenneth Menzies — Aug. 3, 2025, 7:14 p.m.
Committed to Hamren.
- (35150) Dr. Pradip Karmakar — Aug. 6, 2025, 1:43 p.m.
Dear Sir,
Here are the information regarding first three Cepheids.
SV VUL are saturated.VX Per has very low SNR.
SZ Cas has very low SNR.
With regards,
Pradip Karmakar- (35150) Dr. Pradip Karmakar — Sept. 15, 2025, 6:42 p.m.
Dear Sir,
From Arne's email I came to know that BSM_Haemen is off line. So I am requesting you to change my proposal #P627 to another BSM telescope if possible.
Hope you consider my request.
With regards,
Pradip Karmakar- (35150) Dr. Pradip Karmakar — March 9, 2026, 7:30 p.m.
Dear Sir,
I am requesting you reopen this proposal #627 for next few months.
Hope consider my request.
With regards,
Pradip Karmakar- (3663) Dirk Terrell — March 10, 2026, 4:06 p.m.
Which targets from the list would you like to observe?
- (35150) Dr. Pradip Karmakar — March 12, 2026, 5:32 a.m.
X Pup and SV VUL .
Please take the images using V and I filters, if possible.- (3663) Dirk Terrell — March 12, 2026, 3:11 p.m.
It will be a few weeks before SV Vul is visible. X Pup is ok now. Ken, let's reactivate these two if they aren't activated already.
- (35150) Dr. Pradip Karmakar — March 12, 2026, 3:47 p.m.
Many thanks for your consideration.
Pradip Karmakar- (35150) Dr. Pradip Karmakar — April 8, 2026, 5:23 p.m.
Still now, I did not get any images in my VPhot account. Please collect some Cepheids which are available now from this proposal #627.
Hope consider my request.
With regards,
Pradip Karmakar
Comments on this proposal are closed.