Re: (184652) 2005 SD33 Monday evening
Nobody is under the shadow, so that is preferred, but so far it is only the two of us. I can only do the one location for this event, and I'm at 10% probability.? Depends on what your non-occultation schedule is, really. This isn't any major threatening asteroid, it is only a Main-Belter.? I re-ran the asteroid through Occult-4. There is a slight rub which may have us rethinking the whole thing: The event is annular, maybe to the point where it isn't worth trying. What are your thoughts? The path did shift more in your direction on the re-do, so maybe we just "observe from home" if we do it at all. I will still try it, since this observation is really about teaching some students. 
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Re: (184652) 2005 SD33 Monday evening
Kevin,
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Looks like the predict for this one is from 2 weeks ago--would it be worth refreshing the predict hoping we can narrow it a bit?
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Early weather forecast looks good up here.
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Couple of minor issues for me on this one:
- I'm enough west of you that I'll have pretty limited set-up time, sun is only 14 degrees below the horizon at event time. Plus the event in in the dead west, toward sunset.
- It is just on the edge of being in the neighbor's pine tree (46 degrees elevation at 270 degrees azimuth) from my observatory. I'll have to more thoroughly check that to see if it will work from there.
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Here are some options on what I can do:
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- Catch it from home only--if it does turn out to be in the tree for the dome, I can use the Astrid/C5 from elsewhere on the property. Looks like I'm an 18% shot from home.
- Go only mobile:
- Tioga-Hammond Lake Recreation (boat ramp) area I have permission to use, and is about 15 minutes from me. It is outside the predicted shadow by about 2 km or so, south side. About a 25% shot.
- Cowanesque Lake Recreation (also boat ramp) area I have never used, but I'm almost certain I can get the OK to use it with a quick call on Monday. About a 25 minute drive. That is about halfway from edge to center of the current predict, again south side. Also about a 25% shot.
- Somewhere else?
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If you prefer the mobile option and it isn't in the trees from my observatory, I may try a daylight 'blind' pointing from the observatory--as well. My mount is very reliable doing this, but of course this week I upgraded the electronics on it and have yet to point it to a clear night sky. So all bets may be off on that option until I can test it--hopefully tonight.
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What would you like me to try?
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Steve C
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Re: NEAF poster -- final review - with attachment!
On Sat, Apr 13, 2024 at 12:22?PM Roxanne Kamin < rlkamin@...> wrote:
Was there an attached poster copy for review?
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On Saturday, April 13, 2024 at 10:09:44 AM EDT, Elizabeth M Warner < warnerem@...> wrote:
Okay, this is it... still time to fix typos or add an image/info to an existing location. But adding any new locations would require redoing the base map and that has lots of repercussions (map size changes (!), color codes shift, then have to shift labels, readjust text box colors to match new color codes).
-- If you need to add a new location, you MUST enter the info into? and let me know by 4pm EDT today Sat 13 April.?
-- if you have a picture to add to an existing?location, please send it to me by 4pm EDT today Sat 13 April.
-- For any text or formatting edits or suggestions, please email me NLT noon Sun 14 April.
If you have questions, I'll be happy to chat via?email, text, Zoom (can send link)...
Clear Skies! Elizabeth 301-405-6555 703-587-0181 cell, txt
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(184652) 2005 SD33 Monday evening
Star is a bright 10.8 magnitude, duration only 0.8 seconds.
Steve & I are signed up for this event and are covering opposite wings. Don't know if there is someone who can take a path under the shadow. Any chance you could go mobile Steve? I am using the event to teach some students in Westport.?
Rick, you are just East of the shadow and would increase the odds significantly of a successful hit if you were to join.
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NEAF poster -- final review
Okay, this is it... still time to fix typos or add an image/info to an existing location. But adding any new locations would require redoing the base map and that has lots of repercussions (map size changes (!), color codes shift, then have to shift labels, readjust text box colors to match new color codes).
-- If you need to add a new location, you MUST enter the info into? and let me know by 4pm EDT today Sat 13 April.?
-- if you have a picture to add to an existing?location, please send it to me by 4pm EDT today Sat 13 April.
-- For any text or formatting edits or suggestions, please email me NLT noon Sun 14 April.
If you have questions, I'll be happy to chat via?email, text, Zoom (can send link)...
Clear Skies! Elizabeth 301-405-6555 703-587-0181 cell, txt
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Re: Qualified Miss Reporting
Hi Steve,
When I report a miss, I always put in a comment with the duration associated with the miss: "No DR of length xx seconds" or something like that. I doubt it gets used.?
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My second station for 2000 QR4 Sunday evening produced a very noisy miss.? When I ran it through the PyOTE detectability tool, I found that it was detectable for a 0.27 second or longer event, not detectable for shorter.? Following the PyOTE instructions, I'm to report a qualified miss, with a negative for 0.27 or longer and a no observation for shorter (predicted maximum was 0.3 seconds, and my home station had a 0.38 second positive).? My primary question is how do we report this on the Excel form?? The pulldown options are Positive, Negative, and Unsure.? There is no Qualified Negative.
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It is fairly rare that I report misses (I only do this on ones that have a positive, either from one of you or a second station of mine)--is this analysis something you all run on each reported miss?? Somewhere along the line I missed having to do this.? If this is standard, I guess I will need to do it for the other miss I had Sunday night and update the form I already submitted for that one.
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Thanks.
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Steve C
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Wow...? excellent job Elizabeth!? The poster is looking good.
The one update I have.. is that we do not have students working with occultations at Ryan, Grassland,? nor Naylor observatories.
With the current title, I don't want to give the impression that local observatories are not welcomed unless they have students involved..?
Does anyone have title or comment suggestions for helping to fill the "white space" ?? - Roxanne
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On Thursday, April 11, 2024 at 05:37:00 PM EDT, Elizabeth M Warner <warnerem@...> wrote:
Hello,
Please find another draft of the NEAF poster...
Things to doublecheck: -- I have the right QR codes for each observatory (!)
-- pictures, text, formatting, consistency...?
NOW is the time to tell me what else you want on the poster! There is some room at the top to add some general text. As you can see, most of the text boxes have some room as well. We might be able to squeeze in a few more pics of facilities, but really, try to get pics that have students in them. Anyone can go to the websites to see the facilities. I had thought it might be good to have what size aperture(s) is being used by the facility, but since I didn't have the info for anyone else, I took it out for UMD.
I will be sending the final draft to Roxanne this weekend so that she can print it in time.
Clear Skies! Elizabeth 301-405-6555
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Hello,
Please find another draft of the NEAF poster...
Things to doublecheck: -- I have the right QR codes for each observatory (!)
-- pictures, text, formatting, consistency...?
NOW is the time to tell me what else you want on the poster! There is some room at the top to add some general text. As you can see, most of the text boxes have some room as well. We might be able to squeeze in a few more pics of facilities, but really, try to get pics that have students in them. Anyone can go to the websites to see the facilities. I had thought it might be good to have what size aperture(s) is being used by the facility, but since I didn't have the info for anyone else, I took it out for UMD.
I will be sending the final draft to Roxanne this weekend so that she can print it in time.
Clear Skies! Elizabeth 301-405-6555
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Steve, that is a very interesting plot of 199JY123.? OccultWatcher indicates that it is a main belt asteroid. As such I was expecting relatively straight line and generic D&R drops.?? However, the light curve looks very similar to what we experienced with Pluto, as we observed the star's light pass through Pluto's atmosphere. There is more of a slope to the D line/edge along with a center spike to the data, but with a straight R line/edge.?
Curiosity speaking and in tossing out a few thoughts for group discussion... it is highly doubtful that we have an atmospheric influence on the data (like Pluto's data) Nix that chain of thought.? So... without a known size / diameter of the rock, could we be looking at a uniquely shaped asteroid? Large rock on one side, narrow "waisted" (hence the center spike to the data) with an attached secondary smaller rock, similar to Arrokoth?? - Roxanne
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On Wednesday, April 10, 2024 at 11:08:02 AM EDT, Steve C via groups.io <conard@...> wrote:
Just in case anyone is interested, here's a plot of my 1999JY123 data taken at 100 Hz.? Note the asymmetry of the event edges.
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Steve C
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Just in case anyone is interested, here's a plot of my 1999JY123 data taken at 100 Hz.? Note the asymmetry of the event edges.
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Steve C
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Re: Bright Occultation Sunday Night
Here's my preliminary results:
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(9667) Amastrinc:? despite a fairly good forecast, it was cloudy all night
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(32289) 2000 QR4:? had a -0.3 second event at my observatory on autopilot, the C-5/Astrid station needs more analysis but may end up being a no-result as the target was so faint
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(56376) JY 123:? had a miss from the centerline with the C-5/Astrid and a neat looking positive from about 1.5 km north of there.? For the positive I used a 66mm refractor/QHY174GPS and ran at 100 frames per second (windowed and binned--only had one reported dropped frame).? That looks interesting, with a gradual drop on the D and a sharp recovery on the R.
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Steve C
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From: conard <conard@...>
To: OccultNEUS <[email protected]>
Date: Saturday, 6 April 2024 5:38 PM EDT
Subject: Re: [OccultNEUS] Bright Occultation Sunday Night
George,
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Good point, but I don't think any come anywhere close to anyone (curse these tiny rocks!):
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(9667) Amastrinc ~9:28 UT 7 Apr--Manchester, NH to Akron, OH
(32289) 2000 QR4 ~01:43 UT 8 Apr--Martha's Vineyard, MA to Ashtabula, OH
(56376) JY 123 ~04:38 UT 8 Apr--NY City (Manhattan) to Irving, NY
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Steve
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From: George <georvisc@...>
To: OccultNEUS <[email protected]>
Date: Saturday, 6 April 2024 4:55 PM EDT
Subject: Re: [OccultNEUS] Bright Occultation Sunday Night
Steve:
Mention what they are - maybe one also passes by another NEUS observer(!)
G
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I've attached a draft of the poster so you can see the basic concept.
I've added the observatories sent by Bria, Conard, and Kamin... If there are more, please add them to the spreadsheet!
But, I need more info and pictures!
Clear Skies! Elizabeth Warner 301-405-6555
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Re: Bright Occultation Sunday Night
George,
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Good point, but I don't think any come anywhere close to anyone (curse these tiny rocks!):
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(9667) Amastrinc ~9:28 UT 7 Apr--Manchester, NH to Akron, OH
(32289) 2000 QR4 ~01:43 UT 8 Apr--Martha's Vineyard, MA to Ashtabula, OH
(56376) JY 123 ~04:38 UT 8 Apr--NY City (Manhattan) to Irving, NY
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Steve
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From: George <georvisc@...>
To: OccultNEUS <[email protected]>
Date: Saturday, 6 April 2024 4:55 PM EDT
Subject: Re: [OccultNEUS] Bright Occultation Sunday Night
Steve:
Mention what they are - maybe one also passes by another NEUS observer(!)
G
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Re: Bright Occultation Sunday Night
Steve:
Mention what they are - maybe one also passes by another NEUS observer(!)
G
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Hi Folks,
I'm trying to work on the poster, but need input. I've taken the text Roxanne sent and put info into a spreadsheet. All material/drafts are in
I've tried to make it as open as possible but I may have to add folks more directly. Please email me warnerem@... directly if you have problems.
Please fill in the spreadsheet... if you have mentored students, please provide what info you can.
If you have photos of the students observing or lightcurves of their events, please upload them (Your last name_facility_event) or email them to me.
My aim is to have a poster that is mostly images rather than words -- a map of the NE US with lines from location to bubbles containing student image/LC and brief text...
Clear Skies! Elizabeth Warner 301-405-6555
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Bright Occultation Sunday Night
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It has been a couple of weeks since I had clear weather, an open schedule, and good events to try.? Tonight and Sunday night are looking partly cloudy and clear respectively here in Northcentral PA.? I have three near 100% events to try.? The first is pretty faint and at ~5:30 AM local Sunday morning--so that will be a single chord try from the home observatory.
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The first of two Sunday evening is pretty routine.? I'm hoping to use the home observatory and the C-5/Astrid to get two chords --that will be a stretch for the Astrid at mag 12.6.? It is also just after it gets completely dark (~9:30 PM), so I'll be sprinting to get everything set-up on time.
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The second Sunday night is the interesting one.? It would be the brightest occultation I've tried to record at mag 6.3.? It goes through a recreational area at a local lake about 10 miles from here.? This one has zero chance from home.?
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For that one I need to decide if I'm doing a single chord with the C-5/Astrid or add in my 66 mm refractor and Watec camera to try to get two.? I'm a bit worried about way over-saturating the Astrid, so I'm going to do a test run tonight if clear.? I'm also thinking to running it fast (20 Hz?) since it is a short event (0.4 sec max)--even with my "bad" memory stick, I don't think I've had any dropped frames to date.
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Steve C
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Re: Poster input for NEAF- Northeast outreach occultation activities
Well, we will have a couple of smaller scopes with cameras on hand in the booth. Plus, we typically have a plethora of posters showing various occultation set-ups.? So, don't think that people will lock into having to use a large scope. But, if there is room to indicate aperture size on the local observatory poster... that might help show a new use for some of the larger aging lonely scopes out there.? - Roxanne
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On Thursday, April 4, 2024 at 10:26:33 AM EDT, Elizabeth M Warner <warnerem@...> wrote:
We can include telescope aperture... For UMD, we primarily used 6" telescopes, occasionally the 7", and for 2 last year, our 3.5"...
Clear Skies! Elizabeth
Is this list going to make people think they need a big observatory to do asteroid occultations?Just a thought, Rick?
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Re: Poster input for NEAF- Northeast outreach occultation activities
We can include telescope aperture... For UMD, we primarily used 6" telescopes, occasionally the 7", and for 2 last year, our 3.5"...
Clear Skies! Elizabeth
Is this list going to make people think they need a big observatory to do asteroid occultations?Just a thought, Rick?
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Re: Poster input for NEAF- Northeast outreach occultation activities
Is this list going to make people think they need a big observatory to do asteroid occultations? Just a thought, Rick?
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Steve C
George Viscome
rickbria22