Re: Starlink: request for magnitude observations

From: Brad Young via Seesat-l <>
Date: Tue, 17 Mar 2020 02:44:59 +0000 (UTC)
 Great article Jonathan and thanks for the attribution.  When the weather finally clears here, I will turn my attention to darks at and the others.
 This is exactly the sort of thing we need instead of all the bologna that’s going on in the press. Vis-à-vis my rant of a few days ago. For those lucky few of you on the blind cc list who missed my rant: 

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On Monday, March 16, 2020, 8:17 PM, Jonathan McDowell via Seesat-l <> wrote:

The first reported observations of Darksat have been published by
Tregloan-Reed et al in Astronomy and Astrophysics:
- SeeSat magnitude estimates would still be very much of interest!
Also, my own Starlink paper, which acknowledges the work of SeeSat
observers, is in press in Astrophysical Journal Letters
and you can see the preprint  at
 - Jonathan McDowell

On Mon, 24 Feb 2020 at 17:02, Jonathan McDowell <>

> DARKSAT (44932) has now reached its operational orbit. This would be a
> great time to report visual magnitudes for it and other Starlink
> satellites. As before, what I'm looking for is mainly catalog number,
> visual magnitude, obsever location and time, plus ideally the rest of the
> usual
> SeeSat reporting data so we can estimate how illuminated it should have
> been.
>    I'm also interested in negative reports from experienced observers
> (satellite #such-and-such not seen at given time). And especially
> interested in any cases where they are seen when *not* predicted to be in
> sunlight (there have been anecdotal cases but I'm not sure I believe them)
>  Last summer's campaign was very successful - thanks to all the observers
> esp. the prolific Jay Respler. Can we do it again?
>  - Jonathan McDowell,  Center for Astrophysics
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