The days I am standing on my shadow

Lets brighten up peoples live with all those lovely pictures of the world around us!

Moderator: Montana

Post Reply
User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5500 times

The days I am standing on my shadow

Post by rsfoto »

Hi,

There is the Sun phenomena called Sub Solar point which means you have no shadow or you can trip on your shadow but this only happens in the latitudes below the Tropic of Cancer and above the Tropic of Capricorn.

Here is the link to the page https://rl.se/zenith-calendar

Punto_SubSolar_0_0.JPG
Punto_SubSolar_0_0.JPG (111.63 KiB) Viewed 1637 times

I live approximately 140 km South of the Tropic of Cancer and here the days I can stand on my shadow :seesaw

Punto_SubSolar_SLP_Julio.JPG
Punto_SubSolar_SLP_Julio.JPG (158.4 KiB) Viewed 1637 times


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
User avatar
marktownley
Librarian
Librarian
Posts: 42120
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 20229 times
Been thanked: 10111 times
Contact:

Re: The days I am standing on my shadow

Post by marktownley »

Interesting stuff thanks!


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
User avatar
Montana
Librarian
Librarian
Posts: 34526
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 17521 times
Been thanked: 8763 times

Re: The days I am standing on my shadow

Post by Montana »

That's interesting! you need to photograph your shadow at that point in time, I'm guess there will only be your feet?

Alexandra


User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5500 times

Re: The days I am standing on my shadow

Post by rsfoto »

Montana wrote: Mon Jun 29, 2020 5:54 pm That's interesting! you need to photograph your shadow at that point in time, I'm guess there will only be your feet?

Alexandra
Hi, There will be no shadow at all as the Sun rays will be 100% parallel and so no shadow is visible except OK if I take the air gap between my shoe sole at the front which raises a bit :mrgreen: :mrgreen: :mrgreen: or the posts have not been exactly positioned :lol: :lol: :lol:

Below some images taken by a friend in 2018 and 2019

subSolarMay18-0896.jpg
subSolarMay18-0896.jpg (772.65 KiB) Viewed 1616 times
subSolarJun18-0917.jpg
subSolarJun18-0917.jpg (789.32 KiB) Viewed 1616 times
subSolar3jun18-0935.jpg
subSolar3jun18-0935.jpg (342.38 KiB) Viewed 1616 times
WhatsApp Image 2018-05-30 at 13.44.29.jpeg
WhatsApp Image 2018-05-30 at 13.44.29.jpeg (110.3 KiB) Viewed 1616 times
Fernando_SubSolar.jpg
Fernando_SubSolar.jpg (485.68 KiB) Viewed 1616 times


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
Derek Klepp
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 12900
Joined: Wed Oct 19, 2011 10:02 am
Been thanked: 171 times

Re: The days I am standing on my shadow

Post by Derek Klepp »

Thanks Rainer I found that really interesting.
Derek


User avatar
Montana
Librarian
Librarian
Posts: 34526
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 17521 times
Been thanked: 8763 times

Re: The days I am standing on my shadow

Post by Montana »

That is such a strange concept to have no shadow at all :)

I remember when I first went to America and we were in Florida at NASA Cape Canaveral, it was our second day in Florida and I remember leaping about and saying to the Hubby, look I have hardly any shadow, isn't it so strange and weird! he looked at me in a strange and weird way :lol: It is the only time I have ever seen this as we continued northwards on the cruise and the shadows became more normal.

Alexandra


User avatar
MapleRidge
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 10173
Joined: Fri Jan 13, 2012 11:58 pm
Location: Cambray, ON Canada
Has thanked: 64 times
Been thanked: 4299 times
Contact:

Re: The days I am standing on my shadow

Post by MapleRidge »

Seems strange to have no shadow ;)

Brian


Brian Colville

Maple Ridge Observatory
Cambray, ON Canada

Photos: https://www.flickr.com/photos/185395281@N08/albums

10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM

2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5500 times

Re: The days I am standing on my shadow

Post by rsfoto »

Hi,

Testing how to best see the Sub Solar point in my garden yesterday I tested a Flamingo and today a Level.

Yesterday the Sun was at 89.5° and today at 89.6° and on Friday July 10 it will be exactly at 90°. So I still have 2 days for testing :mrgreen:

July 6 2020
Image

July 7 2020
SubSolar_20200707_89.6°.jpg
SubSolar_20200707_89.6°.jpg (893.06 KiB) Viewed 1542 times
Last edited by rsfoto on Wed Jul 08, 2020 2:39 pm, edited 1 time in total.


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
Derek Klepp
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 12900
Joined: Wed Oct 19, 2011 10:02 am
Been thanked: 171 times

Re: The days I am standing on my shadow

Post by Derek Klepp »

Thanks for the update Rainer.
Derek


User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5500 times

Re: The days I am standing on my shadow

Post by rsfoto »

Hi,

Today July 8 2020 update.

Sun was behind a cloud at 13:49 hours Mexico time (UTC 18:49 hours) :cry:

SSPoint_NHSA_08072020_13h49m.jpg
SSPoint_NHSA_08072020_13h49m.jpg (294.21 KiB) Viewed 1522 times

Now thinking about the level from yesterday I remembered that in my photography hardware arsenal I have a Nodal Ninja from Fanotec Panoramic Equipment and there are bars with leveling bubbles. So much better to get the vertical bar really vertical.

NodalNinja_Fanotec_SSPoint_NHSA.jpg
NodalNinja_Fanotec_SSPoint_NHSA.jpg (596.45 KiB) Viewed 1522 times


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
User avatar
marktownley
Librarian
Librarian
Posts: 42120
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 20229 times
Been thanked: 10111 times
Contact:

Re: The days I am standing on my shadow

Post by marktownley »

Very cool!


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5500 times

Re: The days I am standing on my shadow

Post by rsfoto »

Update

Hi,

I thought it might be much more interesting to make a video instead of a image only. I did setup everything and tested it but only clouds.

This is my setup.

SubSolar_imaging_setup_NHSA_09072020a.jpg
SubSolar_imaging_setup_NHSA_09072020a.jpg (1.67 MiB) Viewed 1495 times
SubSolar_imaging_setup_NHSA_09072020b.jpg
SubSolar_imaging_setup_NHSA_09072020b.jpg (1.18 MiB) Viewed 1495 times

and here a test video. 20 minutes compressed into 1 minute. Hopefully tomorrow when the Sun is exactly at 90° I have Sun and no clouds :shock:


https://vimeo.com/436933503


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
Post Reply