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The C14 has the obvious advantage of a greater aparture, but that
comes with the problems related to a 3910mm focal length. As a new
C14 user, I'm learning that this long focal length tends to make
tracking, pointing, and stability quite critical. I also considered
a C11 but decided on the C14 because of its Fastar optics. With
Fastar it should be a very fine instrument to use with the 7 micron
pixel ST237A camera. The existing C11s are not Fastar compatable.
Since the new Nexstar 11 GPS is Fastar compatable, I expect that
Celestron will switch to the new Fastar OTAs when they use up their
stock of standard C11 parts.

I'm uncertain about your Losmandy HGM with the C14 and a full
load of camera, dew heaters, and guide scope. There must be some
owners on this group that will address that point

As far as the seeing in Germany or anywhere else goes, there will be
no difference between the C11 and C14, the sky contrast and air
turbulence is the same for either. The bigger C14 will be a little
brighter.

Regards,
Gary


--- In C14@y..., "belonide" <huwe@c...> wrote:

I plan to buy a bigger telescope, but I am not sure if C11 or C14.

I observe from an 500.000 resident city, own a 7" Maksutov-SC,
Losmandy HGM 200 Mount and I want to see visuel more than only
nebulare (whatever if galaxy or star-cluster) for all Deep-Sky
objects.

My second goal is to make CCD-pictures.

I thing for CCD-photography the C11 could be more easy due to the
shorter focal length.

It would be nice if someone can describe what to see with the C14

oder

C11. Is it possible for example to see textures from galaxys?

Because

I only know the nice colored ccd pictures, but I never looked
through a C14 or read something about a visuel impression with the
C14.

And how big are the seeing problems with the C14? In germany it?s

very

cloudy and I don?t what to have only a few nights for observing in

the

year.

Thank you very much for all information.
Johannes

Johannes,

I own both a C11 and a C14, both are on a CI700 mount with a
Losmandy Gemini drive (C11) and an Astrometric SkyWalker drive
(CM14).

You will see brighter images and more detail (Orion Nebula for
example) with a C14, which results in shorter imaging integrations.

The C14 isn't really a portable instrument, I have mine in a domed
observatory. I use the CM1100 as a remote field scope.

With your HGM200, you should not have any weight-mass problems with
the C14. I was only able to use my CM1400/CI700 combo for about a
year before experiencing major problems. I now have to remove the
CI700 and get it fixed, as it stalls every few minutes. The CI700
just isn't robust enough to handle the mass of the C14 with CCD
cameras and the like attached.

Good luck on your decision, hope my experiences help you!
Regards, John
--- In C14@y..., "belonide" <huwe@c...> wrote:

I plan to buy a bigger telescope, but I am not sure if C11 or C14.

I observe from an 500.000 resident city, own a 7" Maksutov-SC,
Losmandy HGM 200 Mount and I want to see visuel more than only
nebulare (whatever if galaxy or star-cluster) for all Deep-Sky
objects.

My second goal is to make CCD-pictures.

I thing for CCD-photography the C11 could be more easy due to the
shorter focal length.

It would be nice if someone can describe what to see with the C14

oder

C11. Is it possible for example to see textures from galaxys?

Because

I only know the nice colored ccd pictures, but I never looked
through a C14 or read something about a visuel impression with the
C14.

And how big are the seeing problems with the C14? In germany it?s

very

cloudy and I don?t what to have only a few nights for observing in

the

year.

Thank you very much for all information.
Johannes

I plan to buy a bigger telescope, but I am not sure if C11 or C14.

I observe from an 500.000 resident city, own a 7" Maksutov-SC,
Losmandy HGM 200 Mount and I want to see visuel more than only
nebulare (whatever if galaxy or star-cluster) for all Deep-Sky
objects.

My second goal is to make CCD-pictures.

I thing for CCD-photography the C11 could be more easy due to the
shorter focal length.

It would be nice if someone can describe what to see with the C14 oder
C11. Is it possible for example to see textures from galaxys? Because
I only know the nice colored ccd pictures, but I never looked
through a C14 or read something about a visuel impression with the
C14.

And how big are the seeing problems with the C14? In germany it?s very
cloudy and I don?t what to have only a few nights for observing in the
year.

Thank you very much for all information.
Johannes

Good evening Gary:

The answer is dependent upon which CCD camera you have. The Optec f/0.33
will not work with the ST-9E. I do not know about the Meade unit.

Clear skies,
Kevin Dixon
ksbtk@...

From: <garyburk@...>

Hi all,
I'm considering getting a "3.3" focal reducer, for use with my C14

for

CCD imaging. Two such devices are readily
available, the Optec and the Meade. I'm interested in other users

experiances

and in if there are
any other similar reducers available. The native 3910 fl of the C14 makes
imaging a challange. I do have the Fastar
optics and an ST237A, but have not yet tried that out. Removing and

replacing

the secondary seems like such a hassle
that I'm hesitant to do it casually.

If you have some experiance and/or opinions you're willing to share I'll
appreciate it.

I have used the Meade 3.3 reducer and it works very well with the
ST237. Very sharp images across the field of view.

Fastar is really wonderful with the C14. I highly recommend it if
you have not tried it. You get a much wider field and very short
exposures compared to the 3.3 reducer. Fastar gives a
16.3'x21.8'field compared to the 3.3 with a 10.4'x13.9' field.
Exposure times are 1/2 as long with Fastar.

Once you do it, installing the Fastar optics is very quick and easy.
One thing you do need is a good finder that has been very well
alligned with the scope. I use a Celestron ST 80 that works very
well to find and center DSO's on that 237 chip.

Ken

--- In C14@y..., garyburk@h... wrote:

Hi all,
I'm considering getting a "3.3" focal reducer, for use with

my C14 for

CCD imaging. Two such devices are readily
available, the Optec and the Meade. I'm interested in other

users experiances

and in if there are
any other similar reducers available. The native 3910 fl of the

C14 makes

imaging a challange. I do have the Fastar
optics and an ST237A, but have not yet tried that out. Removing

and replacing

the secondary seems like such a hassle
that I'm hesitant to do it casually.

If you have some experiance and/or opinions you're willing to share

I'll

appreciate it.

Regards,
Gary

Hi all,
I'm considering getting a "3.3" focal reducer, for use with my C14 for
CCD imaging. Two such devices are readily
available, the Optec and the Meade. I'm interested in other users experiances
and in if there are
any other similar reducers available. The native 3910 fl of the C14 makes
imaging a challange. I do have the Fastar
optics and an ST237A, but have not yet tried that out. Removing and replacing
the secondary seems like such a hassle
that I'm hesitant to do it casually.

If you have some experiance and/or opinions you're willing to share I'll
appreciate it.

Regards,
Gary

Hmm .. because my primary mirror of my c14 is just too heavy ..

Li Jie,

You have to be more detailed. You cannot move the declination any further
in what way? What tube rings? And why do you need them? Adding tube
counterweights has the nasty side-effect of needing a similar added
counterweight, the total of which can add to the shakiness of the mount. A
dovetail arrangement is the best overall solution.

Wayne Gondella
Pittsburgh, Pennsylvania

=lijie=
[2002]
7540832
[2 Cor. 5:7] We live by faith and not by sight.

---

Do You Yahoo!?
Great stuff seeking new owners!

i see .. okay .. thanks!

=lijie=
[2002]
7540832
[2 Cor. 5:7] We live by faith and not by sight.

---

Do You Yahoo!?
Great stuff seeking new owners!

Li Jie,

You have to be more detailed. You cannot move the declination any further
in what way? What tube rings? And why do you need them? Adding tube
counterweights has the nasty side-effect of needing a similar added
counterweight, the total of which can add to the shakiness of the mount. A
dovetail arrangement is the best overall solution.

Wayne Gondella
Pittsburgh, Pennsylvania

Date: Wed, 30 Jan 2002 03:59:26 -0800 (PST)
From: Li Jie <wonglijie@...>
Subject: Re: Digest Number 68


the problem is that i cannot move the declination any further as the tube

rings are blocking it .. therefore the problem of balancing

=lijie=
e117
[2002]
7540832
[2 Cor. 5:7] We live by faith and not by sight.

Losmandy sells weights that fit on the dovetail plates. They might
provide a solution for balancing your scope.

Regards

Frank


--- In C14@y..., Li Jie <wonglijie@y...> wrote:

the problem is that i cannot move the declination any further as

the tube rings are blocking it .. therefore the problem of balancing

=lijie=
e117
[2002]
7540832
[2 Cor. 5:7] We live by faith and not by sight.



---------------------------------
Do You Yahoo!?
Yahoo! Auctions Great stuff seeking new owners! Bid now!

the problem is that i cannot move the declination any further as the tube rings are blocking it .. therefore the problem of balancing

=lijie=
[2002]
7540832
[2 Cor. 5:7] We live by faith and not by sight.

---

Do You Yahoo!?
Great stuff seeking new owners!

Have you got a Losmandy reference to the bar and rings ? I want to do
the same thing with a C11 and an Orion ST 80 !

Actually, the normal procedure is to set the scope up as close to how you
plan to use it (dew shield, finder, diagonal, eyepiece, etc.), then best
guess where tube balance will be. Move the dec shaft horizontal, careful
that the tube doesn't swing out of control. With the dec shaft horizontal,
loosen the dec clutch and check for tube balance. Return to an upright
polar position and slide the tube forward or back (carefully losening and
retightening the dovetail lock knobs) and repeat until balanced. Then
rotate on polar axis until dec shaft is horizontal again (tube locked in
place) and check polar balance, adjusting counterweights until balanced is
achieved and it feels like equal pressure is needed to move counterweights
up or down. A very slight bias toward the east is usually the best way to
go so that the RA gear always has a very slight load on it.

Install your dovetail safety clamp (if using the CI700) and lock it against
the saddle plate. You may also mark your mount in some way so that you can
find this position again. This way, you can eliminate most of the
repetitiveness and get close or spot on the next time you set up.

A better way would be to add a small counterweight to the tube or dovetail,
that you can slide lengthwise on the tube, etc., in order to make fine
adjustments without having to actually loosen the dovetail and reposition
the entire tube when dec balance requirements change, as when adding a
binoviewer, or when going from an 1.25" plossl to a 31mm Nagler, etc.

WayneG

Hi

may i know how do you balance the declination of the C14?

=lijie=
[2002]
7540832
[2 Cor. 5:7] We live by faith and not by sight.

---

Do You Yahoo!?
Great stuff seeking new owners!

Hi,

I have an NGF-S on my C-14. No special adaptors are needed. The
NGF-S kit has everything you need.

Regards, Chip

I have my C14 set up with a Celestron shot tube 80. It is an
outstanding finder for faint DSO's when in the Fastar configuration.
I mounted it on the C14 using a Losmandy dovetail bar on the scope,
and Losmandy rings to hold the 80mm finder. It really works great.
It is solid enough to do CCD work using the finder as a wide field
lens.

Ken

--- In C14@y..., Li Jie <wonglijie@y...> wrote:

Hi

may i know how do you set up a guide scope?
i was wondering how you attach a firstscope or something like that

onto a c14 ..

and i have also found this cool laser thing that allows you to see

where you are pointing in the skies .. like a visible laser pointer
... do you have any idea how to attach it and align it with the c14?

is the njp mount good?

thanks!



=lijie=
e117
[2002]
7540832
[2 Cor. 5:7] We live by faith and not by sight.



---------------------------------
Do You Yahoo!?
Yahoo! Auctions Great stuff seeking new owners! Bid now!

Hi,

When I bought a 20 year old Orange tube C14 (with excellent optics !) a
month ago there was a part called "Tangent Assembly" together with it.
So you can put a C8, C5, schmidt-camera, guide scope or telephoto lens on top
of your C14.
But that way you will "loose" the counterweight bar assembly on top, I
suppose.

I don't know if this is still manufactured/sold but there is another accessory
called "Piggyback Bar Assembly" that maybe helps to mount an (small)
instrument
on top of the C14.

Clear skies,
Marc Biesmans, Essen, Belgium

Hi

may i know how do you set up a guide scope?
i was wondering how you attach a firstscope or something like that onto a c14 ..
and i have also found this cool laser thing that allows you to see where you are pointing in the skies .. like a visible laser pointer ... do you have any idea how to attach it and align it with the c14?
is the njp mount good?

thanks!

=lijie=
[2002]
7540832
[2 Cor. 5:7] We live by faith and not by sight.

---

Do You Yahoo!?
Great stuff seeking new owners!

Would I be able to use the 6.3 focal reducer with 2" ep's and
diagonal along with NGF-S focuser? I have seen some threads that say
it is possible as long as you AREN'T using the NGF due to how the
light cone operates, etc., etc...

Paul Atkinson

I am going to be using this focuser with the C14. Do I need a
special adapter to connect this to the C14. Will adapter I have on
my Meade 12" allow me to connect it?

Paul