Re: 2015-032 recent launch : 4 objects photographed on 10 July 2015 at 22h55m UTC

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Sat, 11 Jul 2015 12:30:30 +0200
Hello Alain,

The 3 close together object are the 3 DMC3 satellites (DMC3-1 to
DMC3-3); the 4th object is probably the PSLV 4th stage.
The other 2 satellites are much smaller. One is a cube with a side of
80 cm; the other is DeorbitSail, a 3U cubesat. But it
will deploy a solar sail of 5x5 m, that is later used to deorbit the sat.

Had to work last night, but there were also clouds.
Hope for better skies this evening.

Regards
Leo


2015-07-11 12:19 GMT+02:00 Alain Figer via Seesat-l <seesat-l_at_satobs.org>:
> Last night , on 10 July 2015, I planned to have a look at the newly launched 2015-032B according to Calsky ephemeris.
>
> Using 50x10 binoculars , I detected in fact a succession of 3 more or less bright objects, passing at a few degrees from each other, just beyond naked eye visibility apart from a few bright flashes.
>
> At the same time I managed to photograph these newly launched 2015-032 objects, successively in UMI, CRB and SER. I got more than 15 photos of 4-sec duration, ISO 5000 , Canon EOS 6D + 200mm at f/2.8,  in a span of 2 minutes at 22h54m-56m UTC. From the photographs it is clear there are 4 objects. The first one is brightly flashing. I may nevertheless have missed it visually because it is followed by a stunning group of 3 satellites, very close from each other and variable in brightness. The last one, being strongly variable, flared superbly in CrB.
>
> At the moment I have no time to analyse in detail these very interesting data. I will do it later.
>
>
>
> Alain Figer
>
> 48.67 N ; 2.13 E ; 170 m a.s.l.
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Received on Sat Jul 11 2015 - 05:31:00 UTC

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