Chris Graham
mmmm...Haggis
Reged: 04/01/04
Posts: 4886
Loc: Stirling, Scotland
|
|
Hope you like the sketch, i find it easier to make a sketch of the Sun rather that an image through my Binoculars with my digicam. Mainly coz the quality is not that great. Hey but the quality of my fist sketch is not that great too 
I think it looks ok, what do u lot think?
--------------------
-Skywatcher 8" Reflector on HEQ5 with Skyscan
-Orion ED80 Refractor
-70mm Guidescope/grab and go scope
-Canon EOS 350D
-Toucam Pro 2
Astronomy & Veggies
|
Chris Graham
mmmm...Haggis
Reged: 04/01/04
Posts: 4886
Loc: Stirling, Scotland
|
|
Here is another some hours later.
--------------------
-Skywatcher 8" Reflector on HEQ5 with Skyscan
-Orion ED80 Refractor
-70mm Guidescope/grab and go scope
-Canon EOS 350D
-Toucam Pro 2
Astronomy & Veggies
|
Chris Graham
mmmm...Haggis
Reged: 04/01/04
Posts: 4886
Loc: Stirling, Scotland
|
|
Can anyone explain this for me....why the two images above have moved so much.
--------------------
-Skywatcher 8" Reflector on HEQ5 with Skyscan
-Orion ED80 Refractor
-70mm Guidescope/grab and go scope
-Canon EOS 350D
-Toucam Pro 2
Astronomy & Veggies
|
BYoesle
Post Laureate
Reged: 06/12/04
Posts: 3510
Loc: Washington USA
|
|
Very nice pictures!
Regarding why the images have "moved", note the times you drew them. One was in the morning and one was in the afternoon. The orientation of the Sun's equator, which the sun spots parallel, changed its inclination, just like the moon and constellations do as they rise in the east and set in the west.
--------------------
Bob  diagonally parked in a parallel universe...
Your heart is free. Have the courage to follow it.
|
Chris Graham
mmmm...Haggis
Reged: 04/01/04
Posts: 4886
Loc: Stirling, Scotland
|
|
Ahhhhhh ok that explains it really well, thanks for that!
--------------------
-Skywatcher 8" Reflector on HEQ5 with Skyscan
-Orion ED80 Refractor
-70mm Guidescope/grab and go scope
-Canon EOS 350D
-Toucam Pro 2
Astronomy & Veggies
|
Chris Graham
mmmm...Haggis
Reged: 04/01/04
Posts: 4886
Loc: Stirling, Scotland
|
|
So would that mean the N S E W are actually wrong on my image?
--------------------
-Skywatcher 8" Reflector on HEQ5 with Skyscan
-Orion ED80 Refractor
-70mm Guidescope/grab and go scope
-Canon EOS 350D
-Toucam Pro 2
Astronomy & Veggies
|
BYoesle
Post Laureate
Reged: 06/12/04
Posts: 3510
Loc: Washington USA
|
|
They are generally correct for terrestrial orientation of your views. Unfortunately for the Sun itself, they are incorrect. Make your drawing at local noon and the orientations will be correct.
But they still are great drawings, and provide a good record for your future observing interests. I still have some of my first drawings from over 30 years ago -- I love them despite their technical flaws.
--------------------
Bob diagonally parked in a parallel universe...
Your heart is free. Have the courage to follow it.
|
Chris Graham
mmmm...Haggis
Reged: 04/01/04
Posts: 4886
Loc: Stirling, Scotland
|
|
Ok cool, thanks again
--------------------
-Skywatcher 8" Reflector on HEQ5 with Skyscan
-Orion ED80 Refractor
-70mm Guidescope/grab and go scope
-Canon EOS 350D
-Toucam Pro 2
Astronomy & Veggies
|
Special Ed
Postmaster
Reged: 05/18/03
Posts: 6339
Loc: Greenbrier Co., WV 38N, 80W
|
|
Congratulations on your first sketches--they are good and you will only get better with practice.
I happened to do a sketch today too. It's always fun to compare observations--of course mine is at much higher mags.
Orientation of the Sun can be difficult. Cardinal directions in your second sketch are very close, though. Most solar authorities that I've seen use celestial NSEW, for instance Big Bear Solar Observatory http://www.bbso.njit.edu/ look under Images.
It can get confusing with diagonals, mirror reversals, etc. The Sun rotates from left to right (celestial east to west) when we look at it through a correct image instrument like your binocs. It helps to remember that most sunspot groups are just to the north or south of the solar equator.
I just mark north or south and identify the following and preceding limbs like with planetary observing. New groups appear on the following limb and rotate across (spinward) and out of sight on the preceding limb.
Good luck with your sketching.
--------------------
Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery
|
Adelaar
super member
Reged: 06/01/04
Posts: 137
|
|
Quote:
I still have some of my first drawings from over 30 years ago -- I love them despite their technical flaws
This is what make them so valuable when you make sketches you have to observe with dedication and concentration and you will remember them for a long time, so xenoaxle keep sketching it's an underestimated medium in a digital world
best Jan Adelaar
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
