Date   

Re: Need help chosing parts for my new AP 900

Jeff Young <jey@...>
 

Chris --

The old-style standard-length counterweight bar for the 1200 weighs
about 20 lbs. I think the 900 uses the same bars, and I don't think the
difference between the old-style and new-style would mean much in terms
of weight -- so your bar will probably also be in the 20 lb range.

Will you also use the mount in portable situations? If not, the
rotating pier adapter is a bit of a luxury -- it's not really needed for
doing an alignment once a year or so in an observatory. In fact, you
don't really even need the flat surface adapter in this case -- you can
just bolt the bottom plate directly to your pier. (Again, the FSA is
nice if you're also going to transport the mount as it's much easier to
mount/demount from it.)

-- Jeff.


________________________________

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On
Behalf Of chris
Sent: Sunday, May 11, 2008 5:50 PM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Need help chosing parts for my new AP 900



I recently ordered the 900 and wonder if I chose the right parts
for my
application? Hopefully someone can help. My setup will be
primarily
in an observatory on a flat top pier. So of course I chose the
flat
surface adapter for that application, and also the rotating pier

adapter as I will use these together. I think I am all set here.
I
have a Tak TSA-S with a pyxis rotator ST-2000XM and CFW-10. This
is
all mounted on a 13.5" Losmandy plate. I chose the DOVELM2 as
the
saddle. Was this a good choice or should I opt for something
else? As
far as CW's go I chose the 18lb weight but am not sure if that
is too
Much or too little? On my NJP I have about 19lbs of weights
2/3's of
the way down the shaft. I would like to be able to balance
higher on
the shaft. I ASSUME the AP CW shaft is much heavier than the
NJP's?
Would I be better off with a different weight or weights? I
appreciate
any input anyone can offer, and biy am I excited about getting
the
mount.

CS,

Chris


Re: TEC 140 On A Mach1

Kurt Mihalco <mihalco@...>
 

Bill,
The Mach1 works great with a TEC140. In fact, it works just fine with
an AP160 too. Maybe in a hurricane you might have a problem... ;>)
Regards,
Kurt M.

--- In ap-gto@yahoogroups.com, "Bill Bradford" <bcbradford@...> wrote:

Is there anyone using a TEC 140 with the Mach1? Everything I know
about the
mount indicates that the TEC 140 would be a no-brainer for the Mach1.

I know that the weight of the 140 would not be an issue. My mounting
plates,
rings, etc. weigh 9 lbs and the 140 weighs 19 lbs. The camera and
focuser
add another few lbs.

Just wonder if there would be a problem with the scope's length in a
10 mph
breeze.

Thanks,
Bill


TEC 140 On A Mach1

Bill Bradford
 

Is there anyone using a TEC 140 with the Mach1? Everything I know about the mount indicates that the TEC 140 would be a no-brainer for the Mach1.

I know that the weight of the 140 would not be an issue. My mounting plates, rings, etc. weigh 9 lbs and the 140 weighs 19 lbs. The camera and focuser add another few lbs.

Just wonder if there would be a problem with the scope's length in a 10 mph breeze.

Thanks,
Bill


Need help chosing parts for my new AP 900

chris <lineman_16735@...>
 

I recently ordered the 900 and wonder if I chose the right parts for my
application? Hopefully someone can help. My setup will be primarily
in an observatory on a flat top pier. So of course I chose the flat
surface adapter for that application, and also the rotating pier
adapter as I will use these together. I think I am all set here. I
have a Tak TSA-S with a pyxis rotator ST-2000XM and CFW-10. This is
all mounted on a 13.5" Losmandy plate. I chose the DOVELM2 as the
saddle. Was this a good choice or should I opt for something else? As
far as CW's go I chose the 18lb weight but am not sure if that is too
Much or too little? On my NJP I have about 19lbs of weights 2/3's of
the way down the shaft. I would like to be able to balance higher on
the shaft. I ASSUME the AP CW shaft is much heavier than the NJP's?
Would I be better off with a different weight or weights? I appreciate
any input anyone can offer, and biy am I excited about getting the
mount.

CS,

Chris


Re: [SPAM] Re: TEC 200

George Whitney <gwhitney@...>
 

Jim,

My friend has that scope on an AP1200 mount. It is such a long scope that
the 1200 mount is necessary. You would not like it on a 900 mount.to much
wiggle and vibration.

George









_____

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On Behalf Of
stardoctor5
Sent: Sunday, May 11, 2008 12:34 AM
To: ap-gto@yahoogroups.com
Subject: [SPAM][ap-gto] Re: TEC 200



The longer the focal length for imaging, the more you want accuracy and
stability in your mount. I have placed a TEC 140 F/7 on an AP400,
AP900, and AP1200. The AP400 was okay for imaging, particularly when
using a reducer, but the AP900 made accurate tracking easier. When
imaging with the TEC 140 at about 1000 mm focal length, I haven't
noticed any appreciable difference between the 900 and 1200.

Also, I used to image with my Meade 12" at 2200 mm focal length on my
AP900. When I upgraded to an AP1200, my FWHM seemed to improve by
about 10% on average, which I think is due to better tracking because
the 1200 didn't have to work as hard as the 900.

Hope this helps,
Ruben

--- In ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com,
"jimhp29401us" <thefamily90@...> wrote:

Does anyone have any thoughts or opinions about using an AP 900 GOTO
to
hold a TEC 200mm F/8 apo? Visual and Imaging? The scope weighs 44
lbs.,
without any extras. Appreciate any thoughts.

Jim Phillips


Re: Two mounts, two scopes, two cameras, one Whale

hewholooks
 

Beauty, Ruben!

Hunter

--- In ap-gto@yahoogroups.com, "stardoctor5" <stardoctor5@...> wrote:

Dear group,

I have processed an image of NGC 4631 using a hybrid technique.

http://www.stardoctor.org/Whale2-hush.html without music
http://www.stardoctor.org/Whale2.html with music

This image combined 3 1/4 hours of Luminence exposures using an
ST10XME
camera and AP reducer through a Meade 12" LX200R telescope on an
AP1200GTO, with 1 1/2 hours red and 1 hour each of green and blue
exposures using an ST2000XM camera through a TEC140 refractor on an
AP900GTO. This photo, combining almost 7 hours of total exposures,
was
take at the Hidden Lake Observatory.

Comments are encouraged.

Ruben


Soon to be new AP 900 owner

chris <lineman_16735@...>
 

Hi all. Just thought I would introduce myself. I just ordered an AP
900. Well actually I turned down my notification then the next day
after a sleepless night I decided to order the mount. Well at least I
think I ordered the mount as the next morning I noticed the 900 was no
longer available. I did receive an e-mail detailing my order though.
I know I will be glad I made the jump to AP and I look forward to
gleaming some knowledge from this group.

Chris in PA


Re: TEC 200

Robin Kerr
 

The longer the focal length for imaging, the more you want accuracy and
stability in your mount. I have placed a TEC 140 F/7 on an AP400,
AP900, and AP1200. The AP400 was okay for imaging, particularly when
using a reducer, but the AP900 made accurate tracking easier. When
imaging with the TEC 140 at about 1000 mm focal length, I haven't
noticed any appreciable difference between the 900 and 1200.

Also, I used to image with my Meade 12" at 2200 mm focal length on my
AP900. When I upgraded to an AP1200, my FWHM seemed to improve by
about 10% on average, which I think is due to better tracking because
the 1200 didn't have to work as hard as the 900.

Hope this helps,
Ruben


--- In ap-gto@yahoogroups.com, "jimhp29401us" <thefamily90@...> wrote:

Does anyone have any thoughts or opinions about using an AP 900 GOTO
to
hold a TEC 200mm F/8 apo? Visual and Imaging? The scope weighs 44
lbs.,
without any extras. Appreciate any thoughts.

Jim Phillips


Re: Two mounts, two scopes, two cameras, one Whale

Paul Gustafson
 

--- In ap-gto@yahoogroups.com, "stardoctor5" <stardoctor5@...> wrote:

Dear group,

I have processed an image of NGC 4631 using a hybrid technique.

http://www.stardoctor.org/Whale2-hush.html without music
http://www.stardoctor.org/Whale2.html with music

This image combined 3 1/4 hours of Luminence exposures using an
ST10XME
camera and AP reducer through a Meade 12" LX200R telescope on an
AP1200GTO, with 1 1/2 hours red and 1 hour each of green and blue
exposures using an ST2000XM camera through a TEC140 refractor on an
AP900GTO. This photo, combining almost 7 hours of total exposures,
was
take at the Hidden Lake Observatory.

Comments are encouraged.

Ruben
Very nice! I also like the no music option.

Paul Gustafson


Re: Two mounts, two scopes, two cameras, one Whale

Roland Christen
 

In a message dated 5/9/2008 10:35:12 PM Central Daylight Time,
stardoctor5@yahoo.com writes:


I have processed an image of NGC 4631 using a hybrid technique.

http://www.stardoctor.org/Whale2-hush.html without music
http://www.stardoctor.org/Whale2.html with music

This image combined 3 1/4 hours of Luminence exposures using an ST10XME
camera and AP reducer through a Meade 12" LX200R telescope on an
AP1200GTO, with 1 1/2 hours red and 1 hour each of green and blue
exposures using an ST2000XM camera through a TEC140 refractor on an
AP900GTO. This photo, combining almost 7 hours of total exposures, was
take at the Hidden Lake Observatory.
Excellent detail and color. great job!

Rolando


**************
Wondering what's for Dinner Tonight? Get new twists on
family favorites at AOL Food.

(http://food.aol.com/dinner-tonight?NCID=aolfod00030000000001)


Two mounts, two scopes, two cameras, one Whale

Robin Kerr
 

Dear group,

I have processed an image of NGC 4631 using a hybrid technique.

http://www.stardoctor.org/Whale2-hush.html without music
http://www.stardoctor.org/Whale2.html with music

This image combined 3 1/4 hours of Luminence exposures using an ST10XME
camera and AP reducer through a Meade 12" LX200R telescope on an
AP1200GTO, with 1 1/2 hours red and 1 hour each of green and blue
exposures using an ST2000XM camera through a TEC140 refractor on an
AP900GTO. This photo, combining almost 7 hours of total exposures, was
take at the Hidden Lake Observatory.

Comments are encouraged.

Ruben


900GTO - production now sold out - Thank you!

 

900GTO German Equatorial Mount
The 900GTO mounts in this production run are now sold out. We invite you to sign up on the Online Product Notification Request Form <http://www.astro-physics.com/webdata/notify.htm> if you are interested in a mount from the next production run scheduled for 2009.

3600GTO German Equatorial Mount - 'El Capitan'
We expect to begin our notification process for this mount as soon as we finalize some information on our website. Production is now underway for this massive mount.

130 StarFire EDF 'Gran Turismo'
We are presently finalizing information relating to the accessories for this mount and plan to begin our notification very soon. Production is well underway and the first scopes are likely to be shipped in early June !!!!!


Marj Christen
Astro-Physics, Inc
11250 Forest Hills Road
Machesney Park, IL 61115
Phone: 815-282-1513
Fax: 815-282-9847
www.astro-physics.com
Please include this e-mail with your response.


Re: [ap-ug] 900GTO - production now sold out - Thank you!

Mike C
 

Congratulations on everything, another exciting AP year !


_____

From: ap-ug@yahoogroups.com [mailto:ap-ug@yahoogroups.com] On Behalf Of Marj
Sent: Friday, May 09, 2008 12:32 PM
To: ap-gto@yahoogroups.com
Cc: ap-ug@yahoogroups.com
Subject: [ap-ug] 900GTO - production now sold out - Thank you!



900GTO German Equatorial Mount
The 900GTO mounts in this production run are now sold out. We invite you to
sign up on the Online Product Notification Request Form <http://www.astro-
<http://www.astro-physics.com/webdata/notify.htm>
physics.com/webdata/notify.htm> if you are interested in a mount from the
next production run scheduled for 2009.

3600GTO German Equatorial Mount - 'El Capitan'
We expect to begin our notification process for this mount as soon as we
finalize some information on our website. Production is now underway for
this massive mount.

130 StarFire EDF 'Gran Turismo'
We are presently finalizing information relating to the accessories for this
mount and plan to begin our notification very soon. Production is well
underway and the first scopes are likely to be shipped in early June !!!!!

Marj Christen
Astro-Physics, Inc
11250 Forest Hills Road
Machesney Park, IL 61115
Phone: 815-282-1513
Fax: 815-282-9847
www.astro-physics.com
Please include this e-mail with your response.


Mach 1 GTO on Astromart Auction

Scott Hammonds <shammo@...>
 

Just in case anyone is interested I have placed my Mach 1 GTO with Eagle
Pier up for auction. It is 1 year old this month. I don't really want to
sell it, but I am moving to the large format chip with my AP160 and can't
justify keeping the Mach 1 GTO.





Scott Hammonds

www.creatorsview.com

---------------------------------------------


Re: Mach1 and checking PASILL4 results

Pierre Henrotay
 

Hi Rick,

Any idea & suggestions welcome, never hesitate.

Well, I do not think that this effect has to do with reticle
centering.

While rotating the reticle housing, the reticle rotates and the
background object that I did put at the intersecting lines stays
there.

What I noticed is that the view I have in the eyepiece from the
background objects does change a bit: as if the polar scope was
slightly moved then back again.
This is noticeable for objects near the edge of the field of view.

Anyway, Roland convinced me in his post (#21920) that this is of no
impact at all on the polar alignment, a possibility that worried me.

I still need to proceed with the shimming approach he suggests in
that post but feel rather confident.

So forget about this particular effect. When something goes wrong -
or, better said, does not go the way you expect or wish them to
happen - one tends to see possible culprits everywhere and fire false
alarms. Sorry for this one.

CS,
Pierre

--- In ap-gto@yahoogroups.com, "Rick Wiggins" <rickwiggins@...> wrote:

Hi Pierre,
Pardon my chiming in. I think that what you describe means that the
reticle is not centered in the polarscope. If you rotate the mount
and this happens, then the polarscope is not centered in the mount.
Make sense??
Thanks, Rick


Re: Unguided imaging

Dave Weaver
 

That is a beautiful result, congratulations!

I need to find the time to fine-tune my polar alignment and re-run my PEC. I haven't
found the time since I put my AP1200 on a shorter pier.

-Dave

--- In ap-gto@yahoogroups.com, "ptolemy1959" <bpeterson@...> wrote:

I was glad to see that PemPro would finally work with my DSI camera,
so that I could correct the PE on my AP900. Last weekend I finally got
to try it. It started out measuring a pead-to-peak error of 6.7" (not
bad, I thought). When I finished less than 2 hours later, the residual
error was 1.4" peak-to-peak.

Well, I just had to see if this would hold up while imaging. So,
here's 2 hours' worth of 5-minute unguided subframes on M27. I was
really pleased with the results:

http://upload.pbase.com/bkpeterson/image/78225931/original

Congrats to everyone involved in making such fine instruments and
software!

Brian


Re: Mach1 and checking PASILL4 results

Wiggins, Rick
 

Hi Pierre,
Pardon my chiming in. I think that what you describe means that the
reticle is not centered in the polarscope. If you rotate the mount
and this happens, then the polarscope is not centered in the mount.
Make sense??
Thanks, Rick

--- In ap-gto@yahoogroups.com, "phenrotay" <Pierre.Henrotay@...>
wrote:

I forgot to add that I noticed the following:
I center an objet in daylight on the reticle; I verify that
rotating
the reticle holder does not induce a significant move of the
referenced object.

However, the objects which are the at the very outer periphery of
the
eyepiece do not stay in the field of view: they go out of the
field
then reappear when the reticle holder is rotated. The movement is
not
big but evident.
I strongly suspect that both axis (RA mount axis and polarscope
optical axis) are not coincident in my case.

Pierre

--- In ap-gto@yahoogroups.com, "phenrotay" <Pierre.Henrotay@>
wrote:

Hi Dean,

yes I love the mount as well - my first AP.

But I am still not (yet ?) in love with the polarscope,
unfortunatley.

Could you do a simple test for me - hereby risking that Roland
names
this test "chasing red herrings down blind alleys"?

Your PASILL4 is fine. So the reticle is on the polarscope optical
axis, as can be verified by rotating the reticle housing and
aiming
a
distant object.

Now, could you observe a distant object, and rotate the
polarscope
but this time by rotating/unscrewing the polar scope adapter
(that
black, knurled metal piece that the polar scope screws in), not
by
rotating the reticle housing.
Does the distant object stay centered at the crossed lines of the
reticle or does it move significantly off the lines, travelling
in a
circle) ? I suspect it will not be moving in your case - mine
does.

In my mind, this tests whether the reticle is aligned with the RA
axis - if I am wrong, happy to know why.
A move of the object - which happens in my case - would imply -
IMHO -
that the polarscope optical axis and the RA axis are not aligned.

CS (and yes, we are lucky here: clear skies for a while, totally
unexpected),
Pierre


--- In ap-gto@yahoogroups.com, "Dean S" <dean@> wrote:

Yes Pierre, mine is indeed the latest version.

Good luck with finding the issue with yours as this a sweet
mount!
I have
never experienced guiding this nice and smooth. It is better
than
my 1200
right now.


900GTOs now available

 

I forgot to mention that you can either call the office (number below) or even order online!
http://www.astro-physics.com/prices/prices.htm

Marj Christen
Astro-Physics, Inc
11250 Forest Hills Road
Machesney Park, IL 61115
Phone: 815-282-1513
Fax: 815-282-9847
www.astro-physics.com
Please include this e-mail with your response.


900GTOs available for JULY delivery! Limited availability! Order now!

 

We are assembling the current run of 900GTO mounts and have a limited number available for delivery in July. If you plan to purchase the 900GTO to fit your needs within the next year, now is the time to order. Once these are gone, they will not be available again until sometime in 2009. Follow the link below for information and specifications.
http://www.astro-physics.com/products/mounts/900gto/900gto.htm

Marj Christen
Astro-Physics, Inc
11250 Forest Hills Road
Machesney Park, IL 61115
Phone: 815-282-1513
Fax: 815-282-9847
www.astro-physics.com
Please include this e-mail with your response.


Re: Mach1 and checking PASILL4 results

Pierre Henrotay
 

Hello Roland,

You refer to a post on ap-ug, not ap-gto, right ?

I wonder if the problem might be in the rotation of the reticle
housing itself: when I rotate, objects close to the edge move out
then in again: the field of view changes. Shimming will not help
there - as confirmed by a simple test I did.

Pierre

--- In ap-gto@yahoogroups.com, chris1011@... wrote:

In a message dated 5/8/2008 6:06:03 AM Central Daylight Time,
Pierre.Henrotay@... writes:


I strongly suspect that both axis (RA mount axis and polarscope
optical axis) are not coincident in my case.
Then shim it as I indicated in a previous post. .001" shim =
approximately 4
arc minutes.

Rolando


**************
Wondering what's for Dinner Tonight? Get new twists on
family favorites at AOL Food.

(http://food.aol.com/dinner-tonight?NCID=aolfod00030000000001)