Mars drawings - Lick 36" Clark refractor

My friend Rich Neuschaefer sent me this link:

http://mtham.ucolick.org/public/TwoWeeksOnMars/

Rich spent a great deal of time over the past few months supporting Lick's
public programsb donating both time and equipment.

Thanks Rich!

Eyepieces used on the 36" for these drawings were Tele Vue's 35mm Panoptic, 32mm
Plossls (with binoviewer) and 55mm Plossl.

Mark Wagner
Current projects (updated 10/3/03) http://www.astronomy-mall.com/projects.html

Eyepieces used on the 36" for these drawings were Tele Vue's 35mm Panoptic,
32mm
Plossls (with binoviewer) and 55mm Plossl.

Baader Binoviewer ;))

Roland Christen

On 21 Oct 2003 15:11:16 GMT, (Chris1011) wrote:


Eyepieces used on the 36" for these drawings were Tele Vue's 35mm Panoptic,
32mm
Plossls (with binoviewer) and 55mm Plossl.

Baader Binoviewer ;))

Roland Christen

Yes. My omission. Sorry Roland.

Mark Wagner
Current projects (updated 10/3/03) http://www.astronomy-mall.com/projects.html

The drawings are outstanding. Those by Misch are, by far, the best I've seen of
Mars. Congrats to all involved on a great project with a great telescope and
thanks for sharing the results.

Regards,

Bill Ferris
"Cosmic Voyage: The Online Resource for Amateur Astronomers"
URL: http://www.cosmic-voyage.net
=============
Email: Remove "ic" from .comic above to respond

What a great site!
Sitting here wondering what it would be like observing planets through such a scope
@ 486x....1000x..... with a binoviewer!

Does anyone know the focal length of the 36" refractor?

VL





Mark Wagner wrote:

My friend Rich Neuschaefer sent me this link:

http://mtham.ucolick.org/public/TwoWeeksOnMars/

Rich spent a great deal of time over the past few months supporting Lick's
public programsb donating both time and equipment.

Thanks Rich!

Eyepieces used on the 36" for these drawings were Tele Vue's 35mm Panoptic, 32mm
Plossls (with binoviewer) and 55mm Plossl.

Mark Wagner
Current projects (updated 10/3/03) http://www.astronomy-mall.com/projects.html

On Tue, 21 Oct 2003 21:14:42 GMT, vL wrote:

What a great site!
Sitting here wondering what it would be like observing planets through such a scope
@ 486x....1000x..... with a binoviewer!

Does anyone know the focal length of the 36" refractor?


Provided to me this morning by Rich Neuschaefer:

Observatory building and 36'' Refractor construction
started in 1881 and completed in January 1888.


Objective Diameter 36''
Focal ratio f/19, Focal length 57' 10''
Tube length 52'
Crown lens thickness 1.96'' at center, 0.60'' at edge
Flint lens thickness 0.93'' at center, 1.65'' at edge
The two lenses are about 6.5'' apart
Total weight of moving part in Right Ascension is 14.5 tons (28,847 lbs)
Dome inside diameter is 71'
Dome weight is 99.5 tons
Dome height is 41' 8'' above top of supporting tower
Dome height is 76'10'' above the ground
Dome framework is steel and shell is galvanized steel plates.
Rising floor is 61.5' in diameter
Floor rises 16.5'
Rising floor weighs 26 tons


Mark Wagner
Current projects (updated 10/3/03) http://www.astronomy-mall.com/projects.html

Mark Wagner wrote:
My friend Rich Neuschaefer sent me this link:

http://mtham.ucolick.org/public/TwoWeeksOnMars/

Rich spent a great deal of time over the past few months supporting Lick's
public programsb donating both time and equipment.

Thanks Rich!

Eyepieces used on the 36" for these drawings were Tele Vue's 35mm Panoptic, 32mm
Plossls (with binoviewer) and 55mm Plossl.

Mark Wagner
Current projects (updated 10/3/03) http://www.astronomy-mall.com/projects.html

Wonderful! And it is so good to see this magnificant instrument in
use. I do not recall seeing Mars with the 36" but I do recall
gazing at Saturn during public nights in the mid 1960s. ( I checked
the centering after every third person or so, even if it was not
needed. )

(Mark Wagner) wrote in message . ..
On 21 Oct 2003 15:11:16 GMT, (Chris1011) wrote:


Eyepieces used on the 36" for these drawings were Tele Vue's 35mm Panoptic,
32mm
Plossls (with binoviewer) and 55mm Plossl.

Baader Binoviewer ;))

Roland Christen

Yes. My omission. Sorry Roland.

Mark Wagner


Mark,

Did you use some aperture stop to make images sharper when the atmosphere
was not great?


V.D.

On 21 Oct 2003 23:33:46 -0700, (ValeryD) wrote:


Mark,

Did you use some aperture stop to make images sharper when the atmosphere
was not great?


Vallery,

I do not believe the 36" was stopped down at any time.

On 10/22/03 15:39 +0900, Mark Wagner wrote:

On 21 Oct 2003 23:33:46 -0700, (ValeryD) wrote:


Mark,

Did you use some aperture stop to make images sharper when the atmosphere
was not great?


Vallery,

I do not believe the 36" was stopped down at any time.

From page 6 of the writings: "In order to eliminate chromatic
aberration, we stopped the aperture to 20 inches."

Even 20" must have provides positively stunning views.

trane
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