Date   

Re: First images with AP1200 GTO

Roland Christen
 

In a message dated 6/21/2007 2:32:22 PM Central Daylight Time,
stuart.j.heggie@sympatico.ca writes:


Roland, the SBIG filters are from Custom Scientific I believe. I get very
strong halos from my green Astrodon. I had thought it was due to the fast
f-ratio I was shooting with the scope I've had till now.
I have an older SBIG ST10E which has very strong multiple reflections form
the green filter and fainter ones from the blue. These filters have no coatings
on one side, so about 4% of the energy keeps bouncing between front and rear
surface. I do not know where SBIG got those filters. The STL11K camera that I
got from Ray Gralack have Custom Scientific RGB filters, he tells me. I have
not had any reflection problems with them.

Rolando


**************************************
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http://www.aol.com.


Re: First images with AP1200 GTO

Roland Christen
 

In a message dated 6/21/2007 12:38:25 PM Central Daylight Time,
kgkirkley@aol.com writes:


you say the Baader filter(s?) do
not cause any halos.
I have been testing the Baader filters for the last week under all kinds of
sky conditions. I do not see any halos around any bright stars. My H-a images
are very sharp with no reflections or ghost images around any stars. Maybe I am
mistaken about Astrodon filters (I have not tested them myself, but go only
on what I have heard from others). I do know that several of my RGB filters in
my ST10 camera cause multiple reflection ghosts near bright stars. I don't
know who makes these filters for SBIG, but they are not of the quality level of
the Baader series. In my STL11K camera I have installed 3 of the narrow band 2"
Baader filters and the images they produce are super nice. All Baader filters
have high grade multi-layer coatings on them to insure freedom from
reflections.

It may also be that the original poster's reflections are coming from his
cover glass and filter rear surface, something that can't be avoided unless the
coverglass is coated with a multi-layer.

Rolando


**************************************
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http://www.aol.com.


Re: First images with AP1200 GTO

Kent Kirkley
 

In a message dated 6/21/07 12:13:55 PM, chris1011@aol.com writes:



I use the Baader 2" filter now. It does not cause any halos.

Rolando
Roland:
I responded to your post, with wonderment, some days ago where you mentioned
that Astrodon filters caused halos. And, now you say the Baader filter(s?) do
not cause any halos.

This is the first I have heard of this 'situation', while halos have been
evident since the beginning of their use in ccd imaging, I thought all filters
produced some level of halos, especially with faster optical systems. I also
thought all filter manufacturers anti-reflection coated their filters.

So what is unique about the Baader's?
Is Baader producing only the Ha or a complete line of LRGB, Ha, etc. filters?

Kent Kirkley






**************************************
See what's free at http://www.aol.com.


Re: First images with AP1200 GTO

Roland Christen
 

In a message dated 6/20/2007 8:00:49 PM Central Daylight Time,
peturnielsen@yahoo.com writes:


do all H-alpha filters cause halo (i'm looking to buy one and was
thinking about getting the astrodon). what h-alpha filter would you
recommend ?
I use the Baader 2" filter now. It does not cause any halos.

Rolando


**************************************
See what's free at
http://www.aol.com.


B343 Dark nebula in Cygnus - LLRGB 4 hrs total exposure

ayiomamitis
 

Dear Group,

With Cygnus slowly getting into good position for imaging, there is a wide variety of goodies it provides for the interested observer and imager.

Given the plethora of Barnard dark nebulae it offers, I thought I would try my hand with one of the largest such objects just north of the bright star Sadr.

More specifically, I pursued B343 which lies within a couple of degrees just north of Sadr. For an image based on four hours total exposure, I kindly direct you to http://www.perseus.gr/Astro-DSO-Nebulae-Dark-B343.htm . This is my first attempt at a dark nebula and I would welcome all feedback. I have checked around and cannot find any reference images for comparison B343 ... if someone has pursued this particular object, I would love to see your results.

Clear skies!

Anthony.


Re: New features

Norm
 

Rick,

If you want a right-angle adapter try L-com #DG090MF1 or #DG090MF2.
See them at www.L-com.com.

Norm

--- In ap-gto@yahoogroups.com, "Rick K" <JunkMailGoesHere@...> wrote:

--- In ap-gto@yahoogroups.com, "David B. Toth" <ve3gyq@> wrote:

At 09:36 AM 6/19/2007, Rick K wrote:
And which batteryless Bluetooth adapter will do this job? AFAIK
the
serial port on the AP mounts have NO provision for supplying
power to
attached serial devices. As well any of those serial devices
are about
2 inches long and would stick up waiting to get ripped off the
controller as the scope or camera passed by. No thanks.
Integrated is
by far the best solution.
The Socket CSA is 2" or less in size, and can get its power from
Pin
9 ... you can wire pin 9 on your mount with 5 volts.
The adaptor doesn't seem to stick out any further than a DB9
would
.... I don't think it would be too vulnerable to "attack" if I
recall
where the connector is.

BTW, I think reworking the mount's electronics to add Bluetooth
would
very well require RECERTIFICATION by the FCC ...
If I recall correctly, that can cost upwards of $20k - Roland
could
comment as I am sure he knows the cost.

(The electronics have to be evaluated for the FCC to prove that
they
do not have significant RF radiation - I'm not sure if a simple
rework
would require this, but it would not surprise me)

Your mileage may vary.

Dave
Sorry, but I have looked into this and 2 inches is over a half
inch
too high. The clearance on the mount from both the big 900 and 1200
plates is inadequate to allow a 2" projection. It barely clears a
1.25" projection. I actually tie the serial cables down out of the
way
specifically so that they stay out of the way. I have been on the
lookout for right angle DB9 connectors but since RS232 is
essentially
obsolete, such items are virtually impossible to find. As it
stands,
for Bluetooth, I could wire up a short 'serial' extender cable and
modify the port to supply power but this is just a kludge. A proper
built-in Bluetooth implementation would be better. Of course, all
this
pales when compared to adding USB connectivity. THAT is way more
important. Shelve Bluetooth entirely if it is going to be a choice
between that and USB.

Although I would be completely at ease modifying the controller to
supply power to the Bluetooth adapter, I am wondering what Roland
would think about this. I expect that he might not be amused and
that
it would void the warranty.


Re: First images with AP1200 GTO

peturnielsen
 

do all H-alpha filters cause halo (i'm looking to buy one and was
thinking about getting the astrodon). what h-alpha filter would you
recommend ?

Peter


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

In a message dated 6/16/2007 8:54:07 AM Central Daylight Time,
dbcoote@... writes:


These show some halos around the stars in colour but at least I am
not
clipping the data (much) any more.
This is at:-
http://www.bcoote-astro.com/eta_tri_panel.htm
That is a pretty amazing image. By the way, it is well known that
Astrodon
filters do cause halos around bright stars. It's because of the type
of coatings
they use.

Rolando


**************************************
See what's free at
http://www.aol.com.


[Non-text portions of this message have been removed]


Re: caps for the serial ports?, and a vote for wireless LAN.

Rick Thurmond
 

Bluetooth sounds good, too. What is the range for bluetooth? Will
it go thirty feet and through a window? Then I can keep the
computer inside.

Rick

On Jun 20, 2007, at 11:06 AM, drgert1 wrote:

Hi,

I vote against WLAN in the mount. Users who want it can get 3rd party
serial bluetooth adapter. Let's not waste Roland's time and effort on
something that user can do themselves vs the stuff that only he on
this planet can do.

Clear Skeis,

Gert

I'd vote for 802.11 wireless LAN to replace the serial ports. Then
I wouldn't have to take my computer outside.


satellite tracking

Rick Thurmond
 

Harold,
No, it's a program my friend wrote. I'll post more on it when I get
his permission.

My understanding is that it sends alt and az commands. Would it be
more accurate if it sent RA and DEC commands instead? Is it
essential that it wait for the reply after sending each command?

Sometimes the mount gets confused or loses calibration. We're
tracking that down now.

Rick

On Jun 20, 2007, at 10:27 AM, masterson_harold wrote:

Rick are you planning to use Satellite Tracker or some other program
and please post the results when you try it out.


_


Re: caps for the serial ports?, and a vote for wireless LAN.

drgert1
 

Hi,

I vote against WLAN in the mount. Users who want it can get 3rd party
serial bluetooth adapter. Let's not waste Roland's time and effort on
something that user can do themselves vs the stuff that only he on
this planet can do.

Clear Skeis,

Gert

I'd vote for 802.11 wireless LAN to replace the serial ports. Then
I wouldn't have to take my computer outside.


Selene and Aphrodite in Waltz

ayiomamitis
 

Dear Group,

Thanks to pristine weather conditions on Monday, I had the privilege and thrill of observing and imaging my second occultation during the past three years involving two of the three brightest objects in the sky. In spite of the fact that the occultation of Venus by the 3.5-day old moon occured during the day (similar to the May/2004 event), these two bright celestial bodies were easily visible both naked-eye as well as through the telescope's humble finderscope.

Venus is currently at 26.39 arc-seconds and growing as it approaches opposition later this summer. With a magnitude of -4.4 and a phase of 44.1%, it is an easy target to locate during the day and, particularly, when the moon is nearby so that proper focusing by our eye against the blue sky (for true infinity) becomes feasible. Through a telescope, even the telescope's finderscope, Venus and its approximate first-quarter phase are easily discernible.

Similarly, the 3.5-day old waning moon was also a pleasant site through the telescope's finderscope with the thin crescent moon meticulously bathed against the rich blue sky. Its milky white surface allowed the identification of many major lunar features associated with the eastern quadrant including Mare Crisium being the most dominant due to its proximity to the lunar terminator.

Please find listed below three links which depict Monday's celestial waltz. The first link is with Venus just to the east of the transparent lunar limb seconds before first contact and disappearance. Similarly, the second link is with Venus just past the western lunar limb seconds after reappearance 80 minutes later. The third and final link is a collage of the first two images which beautifully illustrates yesterday's disappearance and reappearance.

http://www.perseus.gr/Astro-Lunar-Occult-2007-06-18.htm
http://www.perseus.gr/Astro-Lunar-Occult-2007-06-18b.htm
http://www.perseus.gr/Astro-Lunar-Occult-2007-06-18c.htm

http://www.perseus.gr/Astro-Lunar-Occult-2004-05-21D.htm (same event also during the day in May/2004)

Imaging during the day is somewhat challenging and requires careful processing due to the low inherent contrast.

Clear skies.

Anthony.


Re: caps for the serial ports?, and a vote for wireless LAN.

masterson_harold <hfm5022@...>
 

--- In ap-gto@yahoogroups.com, Rick Thurmond <yahoogroups@...> wrote:

My 1200's serial port connectors have gotten a little rusty. Does
anyone know where one can get those plastic caps to cover them
with?
I've not used them up until now, my friend has a program we plan
to
use to track satellites and the ISS, and we're going to try it
out.
And here I am with embarrassing rusty serial ports on an otherwise
beautiful mount!

I'd vote for 802.11 wireless LAN to replace the serial ports.
Then
I wouldn't have to take my computer outside.

Generally, though, I'm happy to get away from the computer for a
change, and just use the fine hand controller. In addition to the
great mechanicals of the mount, the fact that I can run it without
being disturbed by a computer is its greatest feature.

Rick
Rick are you planning to use Satellite Tracker or some other program
and please post the results when you try it out.


Re: New features

observe_m13
 

Hi Steve,

Just got off the phone with L-com. I was hoping for solderable
connectors so that I could modify my cables but these should work out ok.

Rick.


--- In ap-gto@yahoogroups.com, "Steve Reilly" <sreilly@...> wrote:

Here's a fast two links...





http://www.blackbox.com/Catalog/Detail.aspx?cid=45,659,875
<http://www.blackbox.com/Catalog/Detail.aspx?cid=45,659,875&mid=4304>
&mid=4304



http://www.l-com.com/item.aspx?id=8656



Steve





From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] On
Behalf Of
Rick K
Sent: Wednesday, June 20, 2007 2:02 AM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Re: New features



--- In ap-gto@yahoogroups.com <mailto:ap-gto%40yahoogroups.com> ,
"David B.
Toth" <ve3gyq@> wrote:

At 09:36 AM 6/19/2007, Rick K wrote:
And which batteryless Bluetooth adapter will do this job? AFAIK the
serial port on the AP mounts have NO provision for supplying power to
attached serial devices. As well any of those serial devices are
about
2 inches long and would stick up waiting to get ripped off the
controller as the scope or camera passed by. No thanks. Integrated is
by far the best solution.
The Socket CSA is 2" or less in size, and can get its power from Pin
9 ... you can wire pin 9 on your mount with 5 volts.
The adaptor doesn't seem to stick out any further than a DB9 would
.... I don't think it would be too vulnerable to "attack" if I recall
where the connector is.

BTW, I think reworking the mount's electronics to add Bluetooth would
very well require RECERTIFICATION by the FCC ...
If I recall correctly, that can cost upwards of $20k - Roland could
comment as I am sure he knows the cost.

(The electronics have to be evaluated for the FCC to prove that they
do not have significant RF radiation - I'm not sure if a simple rework
would require this, but it would not surprise me)

Your mileage may vary.

Dave
Sorry, but I have looked into this and 2 inches is over a half inch
too high. The clearance on the mount from both the big 900 and 1200
plates is inadequate to allow a 2" projection. It barely clears a
1.25" projection. I actually tie the serial cables down out of the way
specifically so that they stay out of the way. I have been on the
lookout for right angle DB9 connectors but since RS232 is essentially
obsolete, such items are virtually impossible to find. As it stands,
for Bluetooth, I could wire up a short 'serial' extender cable and
modify the port to supply power but this is just a kludge. A proper
built-in Bluetooth implementation would be better. Of course, all this
pales when compared to adding USB connectivity. THAT is way more
important. Shelve Bluetooth entirely if it is going to be a choice
between that and USB.

Although I would be completely at ease modifying the controller to
supply power to the Bluetooth adapter, I am wondering what Roland
would think about this. I expect that he might not be amused and that
it would void the warranty.





[Non-text portions of this message have been removed]


Re: Mounting a C11 on an AP900GTO

d_ankeney <3spencer2@...>
 

You don't mention if this is for visual or astrophotography.
If its for visual the Losmandy DC11 that Gilles recommended will be
fine. I had one mounted on a 600GTO and it was very stable.
Dan

--- In ap-gto@yahoogroups.com, "neil6536" <neil.mack@...> wrote:

Good day!
I'm looking at buying a Celestron C11 OTA, which I would use on my
900GTO.
Any recommendations on the best way to mount it? I already own the 15"
dovetail/sliding bar accessories.
Many thanks, and clearer skies,
Neil


Re: Orthagonality/alignment issues with dual scope setup

ebuehrens
 

If the error is consistent as you indicate, then it's probably
misalignment of the optical and mechanical axes of the C-14. An
alternative approach is to use adjustable tube rings (the kind with
the three adjustment screws) for the AP160. Then you adjust the 160 so
that it's pointing where the C-14 is.

--- In ap-gto@yahoogroups.com, "Mark Squicquero" <docsquic@...> wrote:

Eric,

Thanks for the reply. I think you're right. I haven't quantified
the amount of error but, since shimming, it's small. When the object
is centered in the C-14 FOV (narrow) it is in the outer 1/4 of the
AP160's FOV (wider). It also occurs in all parts of the sky, so it's
not mirror flop related. I was thinking that it could be mechanical
misalignment in the C-14, being a mass produced scope etc. I'll
probably use your solution #2 and live with it. It's more anoying
than anything else.

Thanks,
Mark

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

Hi Mark,

It would be good to know how much misalignment you're seeing, but my
guess is that the issue is not with the mounting hardware, it's in
the
C-14 - either you are seeing mirror flop (which would produce
inconsistent pointing errors depending on what part of the sky the
scope was pointing to - or (just as likely, I think) the optical and
mechanical axes of the C-14 are not aligned. All it takes for that
to
happen is for the central pipe on which the moving primary slides to
be slightly out of alignment with the mechanical axis of the OTA. In
that instance the "wedge" you're chasing is actually in the scope.

My advice: determine whether the error is reproducible over all
areas
of the sky, which would favor my hypothesis #2, and then either
machine some clearance in the bolt holes so the cradle can be moved
slightly side-to-side, or (my favorite) just live with it. If you
get
it sorted out once, I guaranteee that it will go out of whack in the
future. There are just too many sources of mechanical error in the
C-14. Good scope and good value but IMHO the design and mechanicals
are overtaxed at this aperture.

good luck,

Eric
www.taconicobservatory.com

--- In ap-gto@yahoogroups.com, "Mark Squicquero" <docsquic@>
wrote:

I mistakenly posted this in the AP-UG group.

Hi all,

I have a general question regarding my current setup:

Ap1200GTO, AP 160, C-14, Robin Casaday tandem mounting system,
Homeyer Cradle on the C-14.

I've just begun to refine this setup and have found that there
are
slight alignment issues ie the two scopes don't exactly align on
the
same target. When I calibrate the mount using the Ap 160,
pointing is
superb. I shimmed the C-14 between the Homeyer Cradle and the
mounting plate and it improved the alignment somewhat. ( I
figured
that the AP scope/rings/ Casaday plate were probably pretty
accurate
so I focused on the C-14/custom SS plate/Homeyer system). The
shimming consisted of "raising" the back of the cradle. I also
found
that I had to slightly shim more one side of both the front and
back
of the cradle. As I mentioned the alignment is improved but not
perfect. If I move the scopes so that one is above the other on
one
side of the mount, I can move the tandem arrangement in pure dec
very
slightly to bring the C-14 to target. So it appears the necessary
correction is to diverge the back of the OTA's very slightly by
shimming one side of the C-14.

My question is, how do I accomplish this? The C-14 fits very
snugly
in the cradle and there doesn't appear to be any room to shim.
I've
tried loosening the mounting bolts and applying pressure to one
side
of the cradle and then re-tightening to no avail. My guess is
that
the custom SS mounting plate, although very sturdy and cool
looking,
has some wedge in it. I've read nothing but praise for the
Homeyer
cradle as far as its accuracy and rigidy (which is why I
purchased
it), so I don't think that is the source. Any suggestions would
be
appreciated. If shimming won't work maybe I can try a different
mounting plate.

Thanks,
Mark Squicquero


Re: Orthagonality/alignment issues with dual scope setup

Mark Squicquero
 

Eric,

Thanks for the reply. I think you're right. I haven't quantified
the amount of error but, since shimming, it's small. When the object
is centered in the C-14 FOV (narrow) it is in the outer 1/4 of the
AP160's FOV (wider). It also occurs in all parts of the sky, so it's
not mirror flop related. I was thinking that it could be mechanical
misalignment in the C-14, being a mass produced scope etc. I'll
probably use your solution #2 and live with it. It's more anoying
than anything else.

Thanks,
Mark

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

Hi Mark,

It would be good to know how much misalignment you're seeing, but my
guess is that the issue is not with the mounting hardware, it's in
the
C-14 - either you are seeing mirror flop (which would produce
inconsistent pointing errors depending on what part of the sky the
scope was pointing to - or (just as likely, I think) the optical and
mechanical axes of the C-14 are not aligned. All it takes for that
to
happen is for the central pipe on which the moving primary slides to
be slightly out of alignment with the mechanical axis of the OTA. In
that instance the "wedge" you're chasing is actually in the scope.

My advice: determine whether the error is reproducible over all
areas
of the sky, which would favor my hypothesis #2, and then either
machine some clearance in the bolt holes so the cradle can be moved
slightly side-to-side, or (my favorite) just live with it. If you
get
it sorted out once, I guaranteee that it will go out of whack in the
future. There are just too many sources of mechanical error in the
C-14. Good scope and good value but IMHO the design and mechanicals
are overtaxed at this aperture.

good luck,

Eric
www.taconicobservatory.com

--- In ap-gto@yahoogroups.com, "Mark Squicquero" <docsquic@>
wrote:

I mistakenly posted this in the AP-UG group.

Hi all,

I have a general question regarding my current setup:

Ap1200GTO, AP 160, C-14, Robin Casaday tandem mounting system,
Homeyer Cradle on the C-14.

I've just begun to refine this setup and have found that there
are
slight alignment issues ie the two scopes don't exactly align on
the
same target. When I calibrate the mount using the Ap 160,
pointing is
superb. I shimmed the C-14 between the Homeyer Cradle and the
mounting plate and it improved the alignment somewhat. ( I
figured
that the AP scope/rings/ Casaday plate were probably pretty
accurate
so I focused on the C-14/custom SS plate/Homeyer system). The
shimming consisted of "raising" the back of the cradle. I also
found
that I had to slightly shim more one side of both the front and
back
of the cradle. As I mentioned the alignment is improved but not
perfect. If I move the scopes so that one is above the other on
one
side of the mount, I can move the tandem arrangement in pure dec
very
slightly to bring the C-14 to target. So it appears the necessary
correction is to diverge the back of the OTA's very slightly by
shimming one side of the C-14.

My question is, how do I accomplish this? The C-14 fits very
snugly
in the cradle and there doesn't appear to be any room to shim.
I've
tried loosening the mounting bolts and applying pressure to one
side
of the cradle and then re-tightening to no avail. My guess is
that
the custom SS mounting plate, although very sturdy and cool
looking,
has some wedge in it. I've read nothing but praise for the
Homeyer
cradle as far as its accuracy and rigidy (which is why I
purchased
it), so I don't think that is the source. Any suggestions would
be
appreciated. If shimming won't work maybe I can try a different
mounting plate.

Thanks,
Mark Squicquero


Re: caps for the serial ports?, and a vote for wireless LAN.

Rick Thurmond
 

Joe,
Wow, that's exactly the answer I was looking for. Where else can one
get such good advice? I'll get some of those covers.

Thanks,
Rick

On Jun 19, 2007, at 8:02 PM, Joseph Zeglinski wrote:

Hi Rick,

Those anti static pink DB9 serial port plastic caps that come with the
GTOCP3 are nice, but they are easily lost. All you need to do is
brush against
them a bit, and they are gone. Thy are really meant only for
shipping the
mount to you, and not as weather protection. However, there is
something much
better - read on.

When I worked on design rugged flight computers, and for
installation on
bulldozers (talk about vibration and dust water, and mud), we
plugged the
unused DB sockets and plugs on the connector back panel with
aluminum cover
caps held down with DB cable connector mounting screws. These are
fine if you
want a fairly permanent cover. Otherwise, some of the CONEC's DB
caps have
EMI gripping ridges, so they grip the panel connector quite well,
even without
the two DB type side screws.

Visit www.CONEC.com and click on tab:
Catalog->D-SUB Connectors->
Scroll way down the page to "Accessories/Mounting hardware for D-Sub
Connectors.

Product items #97 to # 103 on that page, give you a range of caps from
plastic, to aluminum, and even rubberized water tight. Click on the
numbered
line item to get the large picture, part numbers, and engineering
drawing
info.
They are variously called: "Dust caps, Screen caps, or Shield caps" -
depending on how rugged their connector environment.
(e.g. 99. Covered screen cap for EMI/RFI)

I would choose the EMI/RFI types - they have a tighter ribbed
ridge, so
they won't come off as easily, if you don't want to screw the caps
down
permanently.

CONEC is quite unique - nobody else makes aluminum EMI/RFI
shielding DB
connector caps (as well as the flimsy plastic ones). Worth buying
several, in
case you somehow manage to lose one.

When you order, you also have to select either a male of female
connector
cap, as well as the number of pin positions (width) of the DB panel
connector
you need to cover. I haven't seen these from any distributor like
Jameco or
Digi-Key, in the past, so you may have to deal with CONEC directly.

These are really great aluminum DB caps.
Hope this helps,
Joe

----- Original Message -----
From: "Rick Thurmond" <yahoogroups@rickthurmond.com>
To: <ap-gto@yahoogroups.com>
Sent: Tuesday, June 19, 2007 10:04 PM
Subject: [ap-gto] caps for the serial ports?, and a vote for
wireless LAN.

My 1200's serial port connectors have gotten a little rusty. Does
anyone know where one can get those plastic caps to cover them with?
I've not used them up until now, my friend has a program we plan to
use to track satellites and the ISS, and we're going to try it out.
And here I am with embarrassing rusty serial ports on an otherwise
beautiful mount!


Re: New features

observe_m13
 

--- In ap-gto@yahoogroups.com, "David B. Toth" <ve3gyq@...> wrote:

At 09:36 AM 6/19/2007, Rick K wrote:
And which batteryless Bluetooth adapter will do this job? AFAIK the
serial port on the AP mounts have NO provision for supplying power to
attached serial devices. As well any of those serial devices are about
2 inches long and would stick up waiting to get ripped off the
controller as the scope or camera passed by. No thanks. Integrated is
by far the best solution.
The Socket CSA is 2" or less in size, and can get its power from Pin
9 ... you can wire pin 9 on your mount with 5 volts.
The adaptor doesn't seem to stick out any further than a DB9 would
.... I don't think it would be too vulnerable to "attack" if I recall
where the connector is.

BTW, I think reworking the mount's electronics to add Bluetooth would
very well require RECERTIFICATION by the FCC ...
If I recall correctly, that can cost upwards of $20k - Roland could
comment as I am sure he knows the cost.

(The electronics have to be evaluated for the FCC to prove that they
do not have significant RF radiation - I'm not sure if a simple rework
would require this, but it would not surprise me)

Your mileage may vary.

Dave
Sorry, but I have looked into this and 2 inches is over a half inch
too high. The clearance on the mount from both the big 900 and 1200
plates is inadequate to allow a 2" projection. It barely clears a
1.25" projection. I actually tie the serial cables down out of the way
specifically so that they stay out of the way. I have been on the
lookout for right angle DB9 connectors but since RS232 is essentially
obsolete, such items are virtually impossible to find. As it stands,
for Bluetooth, I could wire up a short 'serial' extender cable and
modify the port to supply power but this is just a kludge. A proper
built-in Bluetooth implementation would be better. Of course, all this
pales when compared to adding USB connectivity. THAT is way more
important. Shelve Bluetooth entirely if it is going to be a choice
between that and USB.

Although I would be completely at ease modifying the controller to
supply power to the Bluetooth adapter, I am wondering what Roland
would think about this. I expect that he might not be amused and that
it would void the warranty.


Re: SkyTools 2 with my AP 1200 Mount

ebuehrens
 

Hi Mal,

I also run my AP1200 with SkyTools 2h. I agree with Roland's
assessment - the only time the mount has ever gotten "lost" is if I
send a sync command from ST when the mount is on the wrong side of the
meridian or if run the mount alternatively from the handpad and from
SkyTools. Running it from one or the other, I've had no problem at all
but I think that mixing commands from both creates problems.

Eric
www.taconicobservatory.com

--- In ap-gto@yahoogroups.com, "Mal Speer" <mal@...> wrote:

I posted this on the SkyTools lias and didn't have much luck getting
an answer.
I have Skytools 2h I believe it is the latest version. I also
downloaded the latest version of the ASCOM platform and driver for the
AP mount.
When I connect to the mount it works fine for the first few objects
than the scope points at the ground or almost crashes into the mount.
I was at Cherry Springs last week. One night the setup worked
perfectly all night. The next night it wouldn't work properly at all.
It will go to one or two objects then go crazy. I tried this about a
year ago with the same results and gave up. The problem is that the
AP hand controller has a very limited data base. It would be nice if
I could get SkyTools to work properly.
I forgot to say that the mount works perfectly when only using the
hand controller. I tried using EXT, and going through the controller.
I have the same problem both ways. I know that people use these
programs to run scopes remotely, so it must be something I am doing
wrong. A couple of times I have set the thing up and pointed the
scope at something very close to east the meridian, let it track past
and then slew to the object again and watch it do the meridian flip
and go to the object again perfectly. Now I think it has to be set up
properly. I point the scope at a few more objects and bingo it goes
nuts again.
The equipment is SkyTools 2 on a Dell XPS notebook running Windows XP
home edition Connected to an AP 1200 mount CP 3 Controller. Does
anyone have any ideas?
Thanks,
Mal


Re: caps for the serial ports?, and a vote for wireless LAN.

Joe Zeglinski
 

Hi Rick,

Those anti static pink DB9 serial port plastic caps that come with the
GTOCP3 are nice, but they are easily lost. All you need to do is brush against
them a bit, and they are gone. Thy are really meant only for shipping the
mount to you, and not as weather protection. However, there is something much
better - read on.

When I worked on design rugged flight computers, and for installation on
bulldozers (talk about vibration and dust water, and mud), we plugged the
unused DB sockets and plugs on the connector back panel with aluminum cover
caps held down with DB cable connector mounting screws. These are fine if you
want a fairly permanent cover. Otherwise, some of the CONEC's DB caps have
EMI gripping ridges, so they grip the panel connector quite well, even without
the two DB type side screws.

Visit www.CONEC.com and click on tab:
Catalog->D-SUB Connectors->
Scroll way down the page to "Accessories/Mounting hardware for D-Sub
Connectors.

Product items #97 to # 103 on that page, give you a range of caps from
plastic, to aluminum, and even rubberized water tight. Click on the numbered
line item to get the large picture, part numbers, and engineering drawing
info.
They are variously called: "Dust caps, Screen caps, or Shield caps" -
depending on how rugged their connector environment.
(e.g. 99. Covered screen cap for EMI/RFI)


I would choose the EMI/RFI types - they have a tighter ribbed ridge, so
they won't come off as easily, if you don't want to screw the caps down
permanently.

CONEC is quite unique - nobody else makes aluminum EMI/RFI shielding DB
connector caps (as well as the flimsy plastic ones). Worth buying several, in
case you somehow manage to lose one.

When you order, you also have to select either a male of female connector
cap, as well as the number of pin positions (width) of the DB panel connector
you need to cover. I haven't seen these from any distributor like Jameco or
Digi-Key, in the past, so you may have to deal with CONEC directly.

These are really great aluminum DB caps.
Hope this helps,
Joe

----- Original Message -----
From: "Rick Thurmond" <yahoogroups@rickthurmond.com>
To: <ap-gto@yahoogroups.com>
Sent: Tuesday, June 19, 2007 10:04 PM
Subject: [ap-gto] caps for the serial ports?, and a vote for wireless LAN.


My 1200's serial port connectors have gotten a little rusty. Does
anyone know where one can get those plastic caps to cover them with?
I've not used them up until now, my friend has a program we plan to
use to track satellites and the ISS, and we're going to try it out.
And here I am with embarrassing rusty serial ports on an otherwise
beautiful mount!