Re: Geo sat eclipse season

From: Robert McNaught via Seesat-l <>
Date: Tue, 1 Mar 2022 10:14:30 +0000
Off hand, I can't be very helpful with details, but I have seen geo sats 
with the naked-eye on several occasions. Once noticed and followed they 
were later ID'd. First time was around 1984 and it wouldn't surprise me 
that Russell Eberst ID'd that one for me. I think there is a note in The 
Astronomer magazine about it in the following month. Most recently, I 
saw one with the naked-eye last year and could ID it from photographs. 
At some point, I'll look out the details, but I believe these were in 
the range of mag +3 to +5.
Cheers, Rob

On 1/03/2022 10:05, Alex D. via Seesat-l wrote:
> Hello,
> I sometimes see reports of binocular sightings of geo sats. But what I'm
> missing in many of those reports is the /type/ of binocular used, and the
> environment in which those obs were made.
> We all know that large binoculars might perform better than smaller ones,
> but omitting the type (with the basic parameters 'magnification x
> objective') makes it difficult to get a grip of how probable it is to see
> something. It's easy to ... boast that one can see sats with a pair of
> binoculars, but to me it is cheating by not mentioning the fact that these
> might e.g. be huge bino's supported by parallelograms, sighted from some
> desert far away from all light pollution. Just to make clear that this
> group deserves more accurate reportings. (A similar issue has to do with
> time reports, that should always be done in UTC time, because this is a
> global group).
> For example, tells of different
> quite interesting binocular observations, which gives the impression that
> having (any kind of...) binoculars would suffice to see geo sats. Which
> obviously won't be possible. [2] [3] give good hints.
> Therefore, IMHO this community should understand that mentioning the
> crucial numbers that go with binocular observations are important,
> otherwise many people will be disappointed when they grab their little
> binoculars. It would also benefit a report when giving an impression of the
> Bortle class of the environment; this would raise the value of the
> observation. It increases the scientific approach that this community is
> capable of following.
> Personally I have good quality 7x50 binoculars and am interested in using
> those to see this phenomenon (but haven't seen it yet). I have been
> observing this phenomenon with a Meade LX-200 telescope (for details, see
> [1], unfortunately not quite scientific because posted on Facebook, forgive
> meif you might not be able to access the pictures.)
> rgds
> -alex-
> Stargazing in Gent <>
> [1]
> [2]
> [3]
> On Sun, Feb 27, 2022 at 11:40 AM Kevin Fetter via Seesat-l <
>> wrote:
>> Geo sat eclipse season begins.
>> When to look around, for flares for your latitude.
>> <
>> l
>> Enjoy the show,
>> Kevin
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Received on Tue Mar 01 2022 - 04:15:13 UTC

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