Orpington Astronomical Society

Astronomy => Alerts! Questions? Discussions... => Topic started by: MarkS on Feb 11, 2008, 14:10:31

Title: Seeing Forecast
Post by: MarkS on Feb 11, 2008, 14:10:31
I've been following the experimental seeing forecast at http://www.meteoblue.com for 2 or 3 months now.  It is generally a good predictor.

The forecast for the seeing on Tuesday evening (12 Feb) is better than any I have previosuly seen.  It could potentially be a great night for high magnification planetary/moon viewing. 

To see(!) for yourself, go to the site and create your own login in "myMap Server".  When you enter that page select the "Astronomy Seeing" tab; select your location on the map and then hit the "make Map" button.

You want to see dark blues in the High/Mid/Low cloud forecast and greens in the seeing 1, Seeing 2 and Jet Stream rows.

Title: Re: Tuesday - Excellent Seeing
Post by: MarkS on Feb 12, 2008, 06:44:20

But transparency might be nil because of fog  :evil:
Title: Re: Tuesday - Excellent Seeing
Post by: Mac on Feb 12, 2008, 13:03:13
at least with the fog you can go out and play Jedi with those green laser pointers.
(http://www.clicksmilies.com/s1106/starwars/star-wars-smiley-023.gif)
Title: Re: Tuesday - Excellent Seeing
Post by: Ian on Feb 12, 2008, 13:12:13
now Mac, you've not been browsing some smilie hosting websites have you?

Anyway, we wouldn't be anywhere near as juvenile as that.

BTW, what was the value of that resistor you mentioned for the dew heater? I need a laser-pointer warmer...
Title: Re: Tuesday - Excellent Seeing
Post by: Mac on Feb 12, 2008, 13:24:22
330ohm, 1/4 or 1/2 watt.
Title: Re: Tuesday - Excellent Seeing
Post by: Carole on Feb 12, 2008, 14:01:42
Ah, some-one else who's laser pointer doesn't work when it gets cold.

I was going to shove it in my underwear to keep it warm but was a bit worried about the laser if it got switched on, does it do any harm except to eyes, does any-one know?

Carole
Title: Re: Tuesday - Excellent Seeing
Post by: Ian on Feb 12, 2008, 14:11:28
so many comments, so little time... ;)  :twisted:

No, you won't be burning holes in your smalls with your laser pointer (unless it's a stupidly powerful one (200mW, most are less than 5mW) ).

I think I'll stick to trying to come up with an electric warmer myself.
Title: Re: Tuesday - Excellent Seeing
Post by: Mac on Feb 12, 2008, 16:38:55
Visiting smiley web sites.(http://www.clicksmilies.com/s1106/lachen/laughing-smiley-014.gif)

Who me?(http://www.clicksmilies.com/s1106/huepfen/jumping-smiley-001.gif)

That would be silly(http://www.clicksmilies.com/s1106/aetsch/cheeky-smiley-006.gif)

I dont have that much free time(http://www.clicksmilies.com/s1106/aetsch/cheeky-smiley-006.gif)

(http://www.clicksmilies.com/s1106/spezial/Fool/daz.gif)
Or maybe i do.

http://www.clicksmilies.com/ (http://www.clicksmilies.com/)

Loads of them.
Title: Re: Tuesday - Excellent Seeing
Post by: Ian on Feb 12, 2008, 16:55:59
thanks for that resistor value Mac. Btw, I'd recommend using 1/2 watt ones, a 1/4 watt will self destruct eventually...
Title: Re: Tuesday - Excellent Seeing
Post by: Tom C on Feb 12, 2008, 19:23:53
Quote from: MarkS on Feb 11, 2008, 14:10:31
I've been following the experimental seeing forecast at http://www.meteoblue.com for 2 or 3 months now.  It is generally a good predictor.

The forecast for the seeing on Tuesday evening (12 Feb) is better than any I have previosuly seen.  It could potentially be a great night for high magnification planetary/moon viewing. 

To see(!) for yourself, go to the site and create your own login in "myMap Server".  When you enter that page select the "Astronomy Seeing" tab; select your location on the map and then hit the "make Map" button.

You want to see dark blues in the High/Mid/Low cloud forecast and greens in the seeing 1, Seeing 2 and Jet Stream rows.



Great link there Mark, cheers. Just what I have been looking for :)
Title: Re: Tuesday - Excellent Seeing
Post by: Fay on Feb 12, 2008, 19:41:24
Carole, don't warm your laser in too delicate a place!!!!!!!!!!!!!!!
Title: Re: Tuesday - Excellent Seeing
Post by: Tony G on Feb 12, 2008, 23:09:41
All this with the laser, reminds me of a tune my Dad (I was to young to remember this) liked years ago by Debbie Boone 'You light up my......... ?' :-?
As for the excellent seeing, I could see the mist rolling in and I could see that excellently and the heavy dew as well. :o

Oh yeah 'You light up my life' was the name of that tune. ;)

Tony G

Title: Re: Tuesday - Excellent Seeing
Post by: MarkS on Feb 13, 2008, 06:51:51
Well, the forecast was certainly accurate - at least for the early part of the evening.  In spite of the bad transparency I saw my best ever moon through the C11 in the early evening.  A visual feast.  It deteriorated fast however before I could get onto Mars.  And then the fog rolled in ...
Title: Seeing Forecast
Post by: MarkS on Apr 22, 2008, 06:28:29

The seeing forecast (www.meteoblue.com) for tonight and tomorrow (Tue/Wed 23 April) is very good - all three indicators are green.

Get out your high magnification planetary kit but don't blame me if it's wrong!
Title: Re: Seeing Forecast
Post by: Mike on Apr 22, 2008, 06:37:11
Where on there is this seeing map you are referring to ?

Title: Re: Seeing Forecast
Post by: Fay on Apr 22, 2008, 08:22:37
I will be out there tonight, Mark. An planning to try out the DMK with the 6" Mak. Cass. Last time I looked I could not get rid of enormous dust bunnies on the Barlow!!!! I will have to disguise them as craters!!
Title: Re: Seeing Forecast
Post by: MarkS on Apr 22, 2008, 08:45:38

At the top left is "myMap Server" - you need to register as a new user.

Once registered you can login.
A map will then be displayed - click on "Astronomy Seeing" just above the map.
Now click your mouse somewhere in Kent - a red cross will appear.
Now click "make Map" (near the top right)
A hour by hour table for the next few days will appear.

Go to the bottom of that page for an explanation of what it all means!
Title: Re: Seeing Forecast
Post by: Mike on Apr 22, 2008, 10:21:51
Thanks Mark - I've registered.
Title: Re: Seeing Forecast
Post by: MarkS on May 09, 2008, 14:30:12
www.meteoblue.com is currently predicting perfect seeing conditions for Sunday night (11 May).

But don't blame me if it's wrong!
Title: Re: Seeing Forecast
Post by: Mike on May 09, 2008, 14:37:13
Ooohh! Hopefully i'll get a chance to get out at last and do some imaging !!
Title: Re: Seeing Forecast
Post by: Rick on May 09, 2008, 15:21:59
...and what about the transparency?  :twisted:
Title: Re: Seeing Forecast
Post by: mickw on May 09, 2008, 16:09:39
No - He's using digital not slide film  ;)
Title: Re: Seeing Forecast
Post by: MarkS on May 19, 2008, 13:26:51

Another good seeing forecast for tonight (Monday 19 May) according to www.meteoblue.com
Title: Re: Seeing Forecast
Post by: MarkS on Jun 04, 2008, 19:20:39

Seeing forecast is excellent for tonight (Wed 4 June).  But I think I've forgotten how to use my scope after so many weeks of cloud ...
Title: Seeing Forecast
Post by: MarkS on Oct 12, 2008, 18:32:18

Seeing should be very good tonight (Sun 12 Oct)

Mark
Title: Seeing Forecast
Post by: MarkS on Jan 06, 2009, 07:09:14

www.meteoblue.com has just started to include a forecast of the seeing measured in arcseconds. (You need to create a free user account to get to the Astronomical Seeing forecast).

Mark
Title: Re: Seeing Forecast
Post by: Whitters on Jan 07, 2009, 20:50:07
Thanks Mark
Title: Re: Seeing Forecast
Post by: RobertM on Jan 07, 2009, 21:42:23
Thanks Mark, that'll be very useful.