Subject: NanoSail D Seen mag +5 Feb 28 0212 UT

From: Djlaszlo (
Date: Mon Feb 28 2011 - 13:29:04 UTC

-----Original Message-----
From: Djlaszlo <>
Sent: Mon, Feb 28, 2011 6:20 am
Subject: Re: Finding NanoSailD flares, thanks!

-----Original Message-----
From: Djlaszlo <>
Sent: Sun, Feb 27, 2011 7:57 pm
Subject: *FRAC* NanoSail D Seen mag +5 Feb 27 1912 MST

It was a shock, but most of the clouds cleared for in time for this 
near overhead pass.  It was a striking background, the Alpha Persei 
Association hosted mag +5 NanoSail D.  It was on time, appearing 
shortly after 0200 by WWV.  It dimmed a little when leaving Perseus, I 
went to tend a camera, and never did recover it.  Clouds were in the 
predicted flare site in Taurus.  I will be surprised if my camera got 
anything, we'll see.  Your intuition was correct for Feb 28 UT, no 
flare for me brighter than mag +3, some clouds interfering after 
culmination though.  Hope some of you got  a look at these passes.  
Dan Laszlo, NCAS Ft Collins CO USA


-----Original Message-----
From: <>
Sent: Sun, Feb 27, 2011 6:34 am
Subject: R: Re: Finding NanoSailD flares, thanks!

of course you can distribute it. Just keep in mind that the model is 
still experimental and I need more data to get confidence in it.  This 
means the sail orientation can be completely different during a pass 
with respect that of the model, resulting in no flare at all.

However, it seems to me that the sail is only fluctuating around the 
predicted orientation. If my intuition is right there is a good chance 
to see the satellite flaring, maybe at least to naked eye range.

Let me know! (Each report will help me to improve the model).


----Messaggio originale----
Data: 27-feb-2011 14.25
A: <>
Ogg: Re: Finding NanoSailD flares, thanks!

Your link came through fine.  That's perfect to guide viewing in 
Colorado, and I'd like to distribute it to our group if that's all 
right?  Looking forward to trying out your software to get the optimum 
Thanks so much for your work!  Dan

-----Original Message-----
From: Djlaszlo <>
Sent: Sun, Feb 27, 2011 6:12 am
Subject: Finding NanoSailD flares

Hi Simone,

Here are the passes for our region this week.  Can you guide me to the 
best time and location to view flares?  What do you know about the size 
of the flare on the ground?  Do you think the satellite is stable in 
Thanks in advance for any assistance!  Dan

DateMagStartsMax. altitudeEndsTimeAlt.Az.TimeAlt.Az.TimeAlt.Az.27 Feb
2.119:08:5510NNW19:13:2272WSW19:17:4810SSE28 Feb
3.017:51:1810N17:54:5925ENE17:58:4010ESE28 Feb
3.719:30:2410NW19:34:1931WSW19:38:1410SSW1 Mar
2.018:11:4810NNW18:16:1152ENE18:20:3210SE1 Mar
5.019:52:4410WNW19:55:0114W19:57:1810SW2 Mar
2.318:32:4010NNW18:37:0769WSW18:41:3210SSE3 Mar
4.018:53:5410NW18:57:4830WSW19:01:4010SSW4 Mar
5.319:16:0210WNW19:18:1414W19:20:2510SW6 Mar
4.318:16:4010NW18:20:3229WSW18:24:2310SSW7 Mar

-----Original Message-----
From: <>
Sent: Sat, Feb 26, 2011 5:51 pm
Subject: R: Re: Online Program - New Function

Dan,the idea is very good and the data you can collect that way very 
useful. I've just taken a look at my model and I think you are a little 
far from the flare track (If I correctly guessed it).However if you 
spot a flare it will help to correct my data.My suggestions are for 
common observations (maybe they are obvious to you):find 2 or 3 well 
known stars near the satellite track between 20 and 40 degrees, or 
more, of elevation.Try to spot it through binocular at the right time 
and follow it. If the sat becomes brighter enough, continue the 
observation naked eye and compare the brightness with those of stars.Of 
course if you are already engaged in taking photographs, just try to 
keep an eye on it. Visual observationis important too.Good 
Luck!Simone>----Messaggio originale---->Da:>Data: 
27-feb-2011 1.06>A: <>>Ogg: Re: Online Program - New 
Function>>Hi Simone, we are trying a line of observers in Wellington, 
Ft Collins >and Broomfield Co to observe this 
2639>>Any last minute suggestions for the best flare ground track for 
 >Nanosail D?>>Dan>>>-----Original Message----->From: 
<>>To:>Sent: Sat, Feb 26, 2011 
4:59 pm>Subject: Online Program - New Function>>>The online version of 
the Visual SAT-Flare Tracker 3D is growing and it >is now ableto show 
the Sky Chart as well. Just click on the "Draw Sky >Chart" button to 
see where the satellites are in thesky, in real-time >or at your 
selected time.The chart can be activated also from the URL: >to see 
where the ISS and the Shuttle will be visible in your sky simply 
l>?q=Iss&Chart=1New functions 
a>t-l mailing list>  

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