Who squished the Sun?

A beautiful clear day for once, ending is a lovely sunset over the
sea. Interesting to compare the size of the Sun's apparent disk from
being high up in the sky and low down, close to the horizon.

http://www.digitalsky.org.uk/solar/2006-03-19.html
--
Pete
http://www.digitalsky.org.uk

"Pete Lawrence" wrote in message
...
A beautiful clear day for once, ending is a lovely sunset over the
sea. Interesting to compare the size of the Sun's apparent disk from
being high up in the sky and low down, close to the horizon.

http://www.digitalsky.org.uk/solar/2006-03-19.html
--
Pete
http://www.digitalsky.org.uk


A very fine image Pete, the church spire? is a clever detail.



A question

I have just received a DSLR (bought for the eclipse) and as we have a clear
night I am trying a few wide field images with the stock lens, can you
achieve a sharp focus with manual focus and the viewfinder or do you use
another method?



Many thanks for sharing

Darren.

Pete Lawrence wrote:
A beautiful clear day for once, ending is a lovely sunset over the
sea. Interesting to compare the size of the Sun's apparent disk from
being high up in the sky and low down, close to the horizon.

http://www.digitalsky.org.uk/solar/2006-03-19.html

Just wanted to tell, that I am eager reading your postings and enjoying
your images for already some months and nearly can't imagine this
newsgroup without your posts to it.
Thanks for sharing all your interesting and beautiful results here.

Claudio

Pete Lawrence nous a donc écrit :

A beautiful clear day for once, ending is a lovely sunset over the
sea. Interesting to compare the size of the Sun's apparent disk from
being high up in the sky and low down, close to the horizon.

http://www.digitalsky.org.uk/solar/2006-03-19.html

Nice sunset Pete.
You're always lucky, to be able to see the sun

--
Norbert. (no X for the answer)
======================================
knowing the universe - stellar and galaxies evolution
http://nrumiano.free.fr
images of the sky http://images.ciel.free.fr
======================================

On Sun, 19 Mar 2006 20:33:29 -0000, "Spr_astro"
wrote:

A question

I have just received a DSLR (bought for the eclipse) and as we have a clear
night I am trying a few wide field images with the stock lens, can you
achieve a sharp focus with manual focus and the viewfinder or do you use
another method?

Eyeballing it can work but it's difficult to achieve 100% accuracy. A
thin Moon (if up) is great for achieving focus before switching to the
stars. Failing this, use a bright star is the next best option.

For better results either use a Hartmaan Mask or, if you have a laptop
available and your DSLR is one of the models covered, use a program
called DSLRFocus (www.dslrfocus.com). My latest camera is a Canon 20Da
which has an interactive focus mode built in. Basically, I can see a
magnified view of what's falling on the sensor presented live on the
screen at the back of the camera. Saves on having to lug a laptop
around and seems to work extremely well.

--
Pete
http://www.digitalsky.org.uk

On 19 Mar 2006 21:06:52 GMT, CeeBee
wrote:

Pete Lawrence wrote in sci.astro.amateur:

A beautiful clear day for once, ending is a lovely sunset over the
sea. Interesting to compare the size of the Sun's apparent disk from
being high up in the sky and low down, close to the horizon.

http://www.digitalsky.org.uk/solar/2006-03-19.html


This should be reported to the proper authorities. The nerve to sneak up and
squeeze it - after all it's our Sun. This must be Klingon brutality.

BTW nice pictures, the setting Sun is a work of art. May I ask why you
decided on using a focal reducer in all pics?

Well spotted. I'm using it because I'm testing the configuration out
for other things ;-)
--
Pete
http://www.digitalsky.org.uk

On Sun, 19 Mar 2006 23:59:21 +0200, Anthony Ayiomamitis
wrote:

Pete Lawrence wrote:
A beautiful clear day for once, ending is a lovely sunset over the
sea. Interesting to compare the size of the Sun's apparent disk from
being high up in the sky and low down, close to the horizon.

http://www.digitalsky.org.uk/solar/2006-03-19.html

Pete,

What a wondeful sunset!!!

Question: what did you use for White Balance? Auto, Sunny, Shadow?

Hi Anthony, I left it on AWB - it's a interesting point though.
--
Pete
http://www.digitalsky.org.uk

Question: what did you use for White Balance? Auto, Sunny, Shadow?

Hi Anthony, I left it on AWB - it's a interesting point though.

Hi Pete, another great photo. One other technical question, and forgive my
very basic photographic knowledge, but why ISO 800 and a 1/800s exposure ?
Would not a lower ISO and slightly longer exposure have produced the same
results with less chance of excessive noise ?

On Mon, 20 Mar 2006 19:08:36 +0000 (UTC), "James Cook"
wrote:



Question: what did you use for White Balance? Auto, Sunny, Shadow?

Hi Anthony, I left it on AWB - it's a interesting point though.

Hi Pete, another great photo. One other technical question, and forgive my
very basic photographic knowledge, but why ISO 800 and a 1/800s exposure ?
Would not a lower ISO and slightly longer exposure have produced the same
results with less chance of excessive noise ?

Hi James,

Yes it would have produced an image with less noise but again I was
carrying out some specific tests for a future project. The 20Da is
pretty low on noise at ISO800 to be honest.

--
Pete Lawrence
http://www.digitalsky.org.uk
Last updated 4th February 2006

"Pete Lawrence" wrote
My latest camera is a Canon 20Da
which has an interactive focus mode built in. Basically, I can see a
magnified view of what's falling on the sensor presented live on the
screen at the back of the camera. Saves on having to lug a laptop
around and seems to work extremely well.

--
Pete
http://www.digitalsky.org.uk

Hi Pete
Excellent photos as usual.

Is this interactive focus mode also present in the 20D (or 30D) or is it a
special feature of the 20Da.
Where can one get a 20Da in the UK?

Dave Smith