Re: OT: See Saturn at its Best and Brightest

2013-04-27 Thread Larry Colen
On Fri, Apr 26, 2013 at 10:52:37PM -0400, J.C. O'Connell wrote:
 Anybody know the correct exposure value ( fstop and shutter speed at a given
 ISO) for saturn? If its reasonable, I may set up my takumar 1000mm and give
 it a try.

It's too bad you don't have a Q to put on the meter of glass.


-- 
Larry Colen l...@red4est.com  http://red4est.com/lrc


-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


Re: OT: See Saturn at its Best and Brightest

2013-04-26 Thread Matthew Hunt
On Thu, Apr 25, 2013 at 12:58 PM, Larry Colen l...@red4est.com wrote:

 What sort of focal length lens would be needed to clearly resolve the
 rings on an APS sensor camera?

I got an identifiable photograph tonight with a K-7, DA*300, and 1.4x
teleconverter, focused manually using live view:

http://www.flickr.com/photos/coneslayer/8684051685/

I wanted to shoot last night and get it in the same frame as the full
moon, but it was too cloudy.

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


Re: OT: See Saturn at its Best and Brightest

2013-04-26 Thread Rob Studdert
On 27 April 2013 12:07, Matthew Hunt m...@pobox.com wrote:

 I got an identifiable photograph tonight with a K-7, DA*300, and 1.4x
 teleconverter, focused manually using live view:

 http://www.flickr.com/photos/coneslayer/8684051685/

 I wanted to shoot last night and get it in the same frame as the full
 moon, but it was too cloudy.

That's pretty cool, I was thinking of trying the same thing with my
A300/2.8 and 1.7AF TC on the K5 and possibly testing the astro
tracking on the GPS unit, light pollution here isn't great for night
viewing though.

--
Rob Studdert (Digital  Image Studio)
Tel: +61-418-166-870 UTC +10 Hours
Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


Re: OT: See Saturn at its Best and Brightest

2013-04-26 Thread Matthew Hunt
On Fri, Apr 26, 2013 at 10:24 PM, Rob Studdert distudio.p...@gmail.com wrote:

 That's pretty cool, I was thinking of trying the same thing with my
 A300/2.8 and 1.7AF TC on the K5 and possibly testing the astro
 tracking on the GPS unit, light pollution here isn't great for night
 viewing though.

Saturn's bright, you don't need tracking and light pollution shouldn't
be a big problem.

I shot at ISO 100, f/8 set on lens (so f/11 effective), 1/4 second. I
don't think you want to go much longer than that without tracking, but
there's obviously plenty of room to speed up ISO and aperture from
what I shot.

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


Re: OT: See Saturn at its Best and Brightest

2013-04-26 Thread Rob Studdert
On 27 April 2013 12:32, Matthew Hunt m...@pobox.com wrote:

 Saturn's bright, you don't need tracking and light pollution shouldn't
 be a big problem.

 I shot at ISO 100, f/8 set on lens (so f/11 effective), 1/4 second. I
 don't think you want to go much longer than that without tracking, but
 there's obviously plenty of room to speed up ISO and aperture from
 what I shot.

OK, that suits my set-up fine, the A300/2.8 + AF1.7TC combo work best
close to wide open so my shutter speed even at ISO 80 should be near
or faster than 1/4 sec, thanks for the info.

Cheers,

--
Rob Studdert (Digital  Image Studio)
Tel: +61-418-166-870 UTC +10 Hours
Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


RE: OT: See Saturn at its Best and Brightest

2013-04-26 Thread J.C. O'Connell
Anybody know the correct exposure value ( fstop and shutter speed at a given
ISO) for saturn? If its reasonable, I may set up my takumar 1000mm and give
it a try.

-
J.C.O'Connell
hifis...@gate.net
-

-Original Message-
From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of Rob Studdert
Sent: Friday, April 26, 2013 10:25 PM
To: Pentax-Discuss Mail List
Subject: Re: OT: See Saturn at its Best and Brightest

On 27 April 2013 12:07, Matthew Hunt m...@pobox.com wrote:

 I got an identifiable photograph tonight with a K-7, DA*300, and 1.4x
 teleconverter, focused manually using live view:

 http://www.flickr.com/photos/coneslayer/8684051685/

 I wanted to shoot last night and get it in the same frame as the full
 moon, but it was too cloudy.

That's pretty cool, I was thinking of trying the same thing with my
A300/2.8 and 1.7AF TC on the K5 and possibly testing the astro
tracking on the GPS unit, light pollution here isn't great for night
viewing though.

--
Rob Studdert (Digital  Image Studio)
Tel: +61-418-166-870 UTC +10 Hours
Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and
follow the directions.


-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


OT: See Saturn at its Best and Brightest

2013-04-25 Thread Daniel J. Matyola
http://science.nasa.gov/science-news/science-at-nasa/2013/25apr_saturn/

Dan Matyola
http://www.pentaxphotogallery.com/danieljmatyola

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


Re: OT: See Saturn at its Best and Brightest

2013-04-25 Thread Larry Colen

On Thu, Apr 25, 2013 at 11:26:58AM -0400, Daniel J. Matyola wrote:
 http://science.nasa.gov/science-news/science-at-nasa/2013/25apr_saturn/

Very cool, thanks for posting that. 

What sort of focal length lens would be needed to clearly resolve the
rings on an APS sensor camera?


 
 Dan Matyola
 http://www.pentaxphotogallery.com/danieljmatyola
 
 -- 
 PDML Pentax-Discuss Mail List
 PDML@pdml.net
 http://pdml.net/mailman/listinfo/pdml_pdml.net
 to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
 the directions.

-- 
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


Re: OT: See Saturn at its Best and Brightest

2013-04-25 Thread steve harley

on 2013-04-25 10:58 Larry Colen wrote


On Thu, Apr 25, 2013 at 11:26:58AM -0400, Daniel J. Matyola wrote:

http://science.nasa.gov/science-news/science-at-nasa/2013/25apr_saturn/


Very cool, thanks for posting that.

What sort of focal length lens would be needed to clearly resolve the
rings on an APS sensor camera?


define clearly - here is someone's shot (4th image) where the rings are 
visible at 400mm with an 18Mpixel APS sensor


http://photography-on-the.net/forum/showthread.php?t=999801

but i think you'd need a telescope to see detail in the rings


--
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


Re: OT: See Saturn at its Best and Brightest

2013-04-25 Thread John Sessoms

From: Larry Colen

On Thu, Apr 25, 2013 at 11:26:58AM -0400, Daniel J. Matyola wrote:

http://science.nasa.gov/science-news/science-at-nasa/2013/25apr_saturn/


Very cool, thanks for posting that.

What sort of focal length lens would be needed to clearly resolve the
rings on an APS sensor camera?




FA*600 f/4 should do the trick. The Bigma (50-500) might work.

--
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.


Re: OT: See Saturn at its Best and Brightest

2013-04-25 Thread John Sessoms

From: steve harley

on 2013-04-25 10:58 Larry Colen wrote


On Thu, Apr 25, 2013 at 11:26:58AM -0400, Daniel J. Matyola wrote:

http://science.nasa.gov/science-news/science-at-nasa/2013/25apr_saturn/


Very cool, thanks for posting that.

What sort of focal length lens would be needed to clearly resolve the
rings on an APS sensor camera?


define clearly - here is someone's shot (4th image) where the rings are
visible at 400mm with an 18Mpixel APS sensor

http://photography-on-the.net/forum/showthread.php?t=999801

but i think you'd need a telescope to see detail in the rings


Keep on scrolling down until you get to the lunar libration animation. 
That's wicked.


--
PDML Pentax-Discuss Mail List
PDML@pdml.net
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.