Date   

Re: two star polar alignment

Luke Dodd <lkdodd@...>
 

I did not have much success using the two star alignment method myself when i took delivery of my 1200 recently.

I purchased the astrophysics polar scope and can get close enough for 60min exposures with a 120mm refractor and STL11000.

I have only used the scope a few times, but the polar scope seems very accurate to me. I am in the southern hemisphere and it does take some practice to visually identify the SCP.

I do use the star drift method also. Personnally you can't beat an approx alignment with the polar scope and then a star drift refinement.

regards luke

----- Original Message -----
From: peturnielsen
To: ap-gto@...
Sent: Tuesday, August 28, 2007 2:54 PM
Subject: [ap-gto] two star polar alignment


was playing with polar alignment tonight using the 2 star alignment.
i slew back and forth many times - in the end i was making the same
corrections but in opposite direction when going from one star to the
next. never got the stars to be exactly in the center. had the
manual with me and was reading the instructions so i'm pretty sure i
was doing it right. any idea what is going on?

peter

ps. does the losmandy polar scope usually wiggle up/down -
right/left. makes it almost impossible to use.

p


two star polar alignment

peturnielsen
 

was playing with polar alignment tonight using the 2 star alignment.
i slew back and forth many times - in the end i was making the same
corrections but in opposite direction when going from one star to the
next. never got the stars to be exactly in the center. had the
manual with me and was reading the instructions so i'm pretty sure i
was doing it right. any idea what is going on?

peter

ps. does the losmandy polar scope usually wiggle up/down -
right/left. makes it almost impossible to use.

p


Re: time and location

Howard Hedlund
 

Hi Dean and Group!



The easy way to check whether your time is set correctly or not is to
press 4=Time/LST from the main menu. Then verify that GMT is correct.

The system is designed so that the keypad's time can match the time on
your wristwatch. The summer/winter setting might also be labeled
daylight savings/standard time. This one hour offset only applies if
you are in an area that observes daylight savings time, and it is only
present so that you can keep the mount's clock showing the correct local
time.



In your case, you were simply going back and forth from a daylight zone
to a standard zone, and this effectively launched you into a twilight
zone (sorry, couldn't resist! ;-) The only thing that is important
to the mount, is that it can determine the correct GMT from the inputs
you give it. It doesn't really care if you play games with the clock
settings, as long as you can come to the correct GMT. If local time,
time zone and daylight savings setting are all correct, the mount will
always calculate the correct GMT. If one of these is wrong, you will
be off. You can, however, fool the mount by making two of the settings
off.



You probably don't need to change any of the settings when you go from
Arizona to New Mexico. Do you reset your watch? Probably not worth
the effort, right? The mount doesn't know you've crossed the border
either. I would leave the mount set to AZ time and ignore the
difference.



Keep in mind, if you are experimenting with the settings, you need to
power down and then back up each time you change a clock or time zone
setting for the GMT to be re-calculated.



Mag. 7 skies!



Howard Hedlund

Astro-Physics, Inc.

815-282-1513

________________________________

From: ap-gto@... [mailto:ap-gto@...] On Behalf
Of Dean Salman
Sent: Monday, August 27, 2007 9:18 AM
To: ap-gto@...
Subject: [ap-gto] Re: time and location



If you mean lat and long yes. Every system is different. I am
assuming that if I put time zone 7 and 1 for summer, then it knows
where I am. Some systems expect you to put in an adjusted time zone
for DST which in that case is 6, but I am assuming that is not the
case. I am a new user. At home it works perfect.

Changing the time from 10am to 11am might haven been a mistake since
I was in the same time zone as Arizona, the only difference is that
in New Mexico DST is in affect. Maybe all I needed to do was change
the DST seting from winter to summe.

I can just move it to Vega and sync for now

--- In ap-gto@... <mailto:ap-gto%40yahoogroups.com> , "N.
Foldager" <nf@...> wrote:

I put in my position, time zone of 7 (mountain time) and set the
time
to local time. When I start of park, it misses Vega by about an
hour.
So what is wrong.
Are you sure where you moved? :-)

Niels Foldager


Re: time and location

Dean Salman <cluster@...>
 

BTW, thanks for the tips on PAM, it took 10 minutes and I was 30 sec
of arc in both directions


--- In ap-gto@..., jjanusz@... wrote:

Hi Dean,

I just ignore DST and set my computer and mount to ST and the
correct
time zone. In your case in AZ turn off DST and set TZ 7 and the
correct time. That should fix it.

Jim

----- Original Message -----
From: Dean Salman <cluster@...>
Date: Monday, August 27, 2007 6:19 am
Subject: [ap-gto] Re: time and location
To: ap-gto@...

If you mean lat and long yes. Every system is different. I am
assuming that if I put time zone 7 and 1 for summer, then it
knows
where I am. Some systems expect you to put in an adjusted time
zone
for DST which in that case is 6, but I am assuming that is not
the
case. I am a new user. At home it works perfect.

Changing the time from 10am to 11am might haven been a mistake
since
I was in the same time zone as Arizona, the only difference is
that
in New Mexico DST is in affect. Maybe all I needed to do was
change
the DST seting from winter to summe.

I can just move it to Vega and sync for now


--- In ap-gto@..., "N. Foldager" <nf@> wrote:

I put in my position, time zone of 7 (mountain time) and set
the
time
to local time. When I start of park, it misses Vega by about
an
hour.
So what is wrong.
Are you sure where you moved? :-)

Niels Foldager



To UNSUBSCRIBE, or for general information on the ap-gto list
see http://groups.yahoo.com/group/ap-gto
Yahoo! Groups Links




Re: time and location

Dean Salman <cluster@...>
 

Jim that worked, I just set it back to winter and set the time zone
to 6 to adjust for DST

--- In ap-gto@..., jjanusz@... wrote:

Hi Dean,

I just ignore DST and set my computer and mount to ST and the
correct
time zone. In your case in AZ turn off DST and set TZ 7 and the
correct time. That should fix it.

Jim

----- Original Message -----
From: Dean Salman <cluster@...>
Date: Monday, August 27, 2007 6:19 am
Subject: [ap-gto] Re: time and location
To: ap-gto@...

If you mean lat and long yes. Every system is different. I am
assuming that if I put time zone 7 and 1 for summer, then it
knows
where I am. Some systems expect you to put in an adjusted time
zone
for DST which in that case is 6, but I am assuming that is not
the
case. I am a new user. At home it works perfect.

Changing the time from 10am to 11am might haven been a mistake
since
I was in the same time zone as Arizona, the only difference is
that
in New Mexico DST is in affect. Maybe all I needed to do was
change
the DST seting from winter to summe.

I can just move it to Vega and sync for now


--- In ap-gto@..., "N. Foldager" <nf@> wrote:

I put in my position, time zone of 7 (mountain time) and set
the
time
to local time. When I start of park, it misses Vega by about
an
hour.
So what is wrong.
Are you sure where you moved? :-)

Niels Foldager



To UNSUBSCRIBE, or for general information on the ap-gto list
see http://groups.yahoo.com/group/ap-gto
Yahoo! Groups Links




Re: Trial Software?

Howard Hedlund
 

You will have received two CD's with your mount. The Astro-Physics CD
contains PulseGuide and PEMPro AP Special Edition along with copies of
the mount and keypad manuals and some other goodies. These are NOT
trial versions. As a 1200GTO purchaser, you are licensed to use them
as if you had purchased them directly. The PEMPro AP SE is, of course,
a special edition exclusively for purchasers of 900GTO and 1200GTO
mounts.



The CCDWare CD is ALL trial versions that are being supplied to us by
the folks at CCDWare for distribution to our customers. They are yours
to try if you please, and it is certainly the hope of CCDWare that you
will like the products well enough to purchase full versions from them.
The CD's were given to us to pass on to our customers as a service and
are part of CCDWare's marketing program. There is no special
"arrangement" that I am aware of regarding A-P and CCDWare as it relates
to anything on the trial CD.



BTW I will now add a "Trial Versions" sticker to all the remaining
CCDWare Promo CD's to avoid future confusion. To be honest, I hadn't
even noticed that the CD's weren't so labeled. Sorry for any
confusion.



Mag. 7 skies!



Howard Hedlund

Astro-Physics, Inc.

815-282-1513

________________________________

From: ap-gto@... [mailto:ap-gto@...] On Behalf
Of gilchriswa
Sent: Monday, August 27, 2007 10:08 AM
To: ap-gto@...
Subject: [ap-gto] Trial Software?



I've been going through the boxes, looking at my new AP-1200 mount.
Last night I got to the software disks that were provided in the
package. I was in the process of installing some of the programs that
I thought had been "bundled" with the mount when I made a surprising
discovery. I was scanning one of the license agreements, when I found
that the copy of CCD AutoPilot on the disk is a 60-day trial version.
BUMMER! I don't usually read these agreements very carefully, but
fortunately I saw this before I installed the software and started the
clock on my "60-day trial". How much of the rest of the software on
the disk is a trial version?

Allen G.


Trial Software?

gilchriswa
 

I've been going through the boxes, looking at my new AP-1200 mount.
Last night I got to the software disks that were provided in the
package. I was in the process of installing some of the programs that
I thought had been "bundled" with the mount when I made a surprising
discovery. I was scanning one of the license agreements, when I found
that the copy of CCD AutoPilot on the disk is a 60-day trial version.
BUMMER! I don't usually read these agreements very carefully, but
fortunately I saw this before I installed the software and started the
clock on my "60-day trial". How much of the rest of the software on
the disk is a trial version?

Allen G.


Re: time and location

spcrichey <drichey@...>
 

Welcome to New Mexico
I grew up near Gila.
If you come thru Albuquerque, let me know. We could talk about AP mounts.
I live in the mountains outside Albuquerque to the East.

--- In ap-gto@..., "Dean Salman" <cluster@...> wrote:

If you mean lat and long yes. Every system is different. I am
assuming that if I put time zone 7 and 1 for summer, then it knows
where I am. Some systems expect you to put in an adjusted time zone
for DST which in that case is 6, but I am assuming that is not the
case. I am a new user. At home it works perfect.

Changing the time from 10am to 11am might haven been a mistake since
I was in the same time zone as Arizona, the only difference is that
in New Mexico DST is in affect. Maybe all I needed to do was change
the DST seting from winter to summe.

I can just move it to Vega and sync for now


--- In ap-gto@..., "N. Foldager" <nf@> wrote:

I put in my position, time zone of 7 (mountain time) and set the
time
to local time. When I start of park, it misses Vega by about an
hour.
So what is wrong.
Are you sure where you moved? :-)

Niels Foldager


Re: time and location

jjanusz@...
 

Hi Dean,

I just ignore DST and set my computer and mount to ST and the correct
time zone. In your case in AZ turn off DST and set TZ 7 and the
correct time. That should fix it.

Jim

----- Original Message -----
From: Dean Salman <cluster@...>
Date: Monday, August 27, 2007 6:19 am
Subject: [ap-gto] Re: time and location
To: ap-gto@...

If you mean lat and long yes. Every system is different. I am
assuming that if I put time zone 7 and 1 for summer, then it knows
where I am. Some systems expect you to put in an adjusted time
zone
for DST which in that case is 6, but I am assuming that is not the
case. I am a new user. At home it works perfect.

Changing the time from 10am to 11am might haven been a mistake
since
I was in the same time zone as Arizona, the only difference is
that
in New Mexico DST is in affect. Maybe all I needed to do was
change
the DST seting from winter to summe.

I can just move it to Vega and sync for now


--- In ap-gto@..., "N. Foldager" <nf@...> wrote:

I put in my position, time zone of 7 (mountain time) and set
the
time
to local time. When I start of park, it misses Vega by about
an
hour.
So what is wrong.
Are you sure where you moved? :-)

Niels Foldager



To UNSUBSCRIBE, or for general information on the ap-gto list
see http://groups.yahoo.com/group/ap-gto
Yahoo! Groups Links




Re: time and location

Dean Salman <cluster@...>
 

If you mean lat and long yes. Every system is different. I am
assuming that if I put time zone 7 and 1 for summer, then it knows
where I am. Some systems expect you to put in an adjusted time zone
for DST which in that case is 6, but I am assuming that is not the
case. I am a new user. At home it works perfect.

Changing the time from 10am to 11am might haven been a mistake since
I was in the same time zone as Arizona, the only difference is that
in New Mexico DST is in affect. Maybe all I needed to do was change
the DST seting from winter to summe.

I can just move it to Vega and sync for now


--- In ap-gto@..., "N. Foldager" <nf@...> wrote:

I put in my position, time zone of 7 (mountain time) and set the
time
to local time. When I start of park, it misses Vega by about an
hour.
So what is wrong.
Are you sure where you moved? :-)

Niels Foldager


NGC 6910 and nebulousity around Sadr in Ha

Malcolm Park
 

This image captured on 26th-27th Aug in very misty conditions and moonlight proves the Ha
filter really does cut through a less than perfect atmosphere. The star is Sadr in Cygnus, open
cluster NGC 6910 and dense clouds of nebulousity everywhere. A total of 129 minutes of
exposure time (longest individual exposures were 8 minutes) with an SXV H9C camera on
90mm refractor on astrophysics 1200 mount:

[img]http://www.malcolmpark.com/images/gallery/3/00000973/96706l.jpg[/img]

Larger image here:

http://picasaweb.google.com/nightskyimaging/NebulousityAroundSadr/
photo#5103304533228798546

regards

Malcolm


Re: time and location

Roland Christen
 

In a message dated 8/27/2007 9:20:09 AM Central Daylight Time,
cluster@... writes:


Changing the time from 10am to 11am might haven been a mistake since
I was in the same time zone as Arizona, the only difference is that
in New Mexico DST is in affect. Maybe all I needed to do was change
the DST seting from winter to summe.

I can just move it to Vega and sync for now
Since time in the AP system is used primarily for locating the meridian, park
positions and horizon points, just change your time entry or daylight savings
number by 1 hour, otherwise you will not park correctly, neither will your
mount do the meridian flip at the correct point when going from east to west and
vice versa. Time is NOT used to locate objects in the sky, rather objects are
located by your first sync. Thereafter, all objects are located from that
first sync, even after parking the scope and turning off the power. The mount
servo remembers where the stars are relative to the angles of the worm gears, as
long as the keypad time continues to be accurate.

What you want to do is to update the time in the keypad so that the functions
of meridian flip, horizon and Park positions are accurate and occur in the
proper place, not to modify the star positions if they are off by 1 hour or
more. That's backwards from the intended operation of the scope.

Therefore here is what I would propose that you do: First locate a known star
and sync on it. Then go to setup and place the mount in Park3 (North Polar
position - this position avoids any potential scope hitting pier in case of way
wrong time). If Park 3 does not place the counterweight shaft in the correct
orientation of straight up-down, then resume from park and modify either the
daylight savings number or the local time by 1 hour and park it again. The mount
should now move 15 degrees from the previous position. If it's now right, you
have your proper time settings. If not, you have some entry completely
bollixed up.

Here is the key about time. It does not really matter where you are on the
earth, at 8pm local time Vega will be in the same position in the sky as far as
the East-West direction. Therefore you could put totally wrong time zone and
location entries into the keypad but if the local time is correct, the mount
will find the star from a known park position. The only thing that will be wrong
will be the horizon points. We have had a situation where a person has
brought a mount from Florida to Minnesota and could not figure out why the mount
said that an object was below the horizon, when in fact it is always above the
horizon in Minnesota. He forgot to change the location. It doesn't have to be
perfect, just within a degree or so, which places the horizon within a degree
(even a 5 degree error will not affect the horizon limit to any point where you
would notice). Object pointing will always be perfectly spot on because
pointing does NOT depend on time or location once you have synced on a known object
(and your mount is properly polar aligned).

Rolando


**************************************
Get a sneak peek of the all-new
AOL at http://discover.aol.com/memed/aolcom30tour


Re: time and location

N. Foldager
 

I put in my position, time zone of 7 (mountain time) and set the time
to local time. When I start of park, it misses Vega by about an hour.
So what is wrong.
Are you sure where you moved? :-)

Niels Foldager


time and location

Dean Salman <cluster@...>
 

I moved to a new location this weekend in New Mexico

I put in my position, time zone of 7 (mountain time) and set the time
to local time. When I start of park, it misses Vega by about an hour.
So what is wrong.

Set Lat and Long
Time Zone: 7
Changed my clock to add an hour
Set DST to summer

Should I not have set the time. I live in AZ where there is no DST, I
just assume leave it off and set the time zone my self. That being the
case would I set New Mexico to 6 since they are now on DST

BTW, does anyone know how to save a location in the predefined cities.
I can save it but it picks Germany. I was putting in Gila, NM


New images from London suburbs, UK

Malcolm Park
 

Some recent images from light polluted London, UK, all tracked on my Astrophysics 1200
gto:

Pacman Nebula Cygnus imaged 25th-26th Aug. Wide view imaged with Canon 30D on Tak
102 and detail of nebula imaged with SXV H9C on Tak Sky 90, merged in PS3:

http://picasaweb.google.com/nightskyimaging/PacmanNebula/
photo#5103017251456303618

Sadr in Cygnus imaged 25th-26th Aug with Hydrogen alpha filter, total of 110 minutes
exposure time with SXV H9C on Tak Sky 90. Sadr with open cluster NGC 6910 mag 7.4
(left) and clouds of nebulousity:

http://picasaweb.google.com/nightskyimaging/NebulousityAroundSadr/
photo#5102965144913068498

Detail image of this intriguing region of gas clouds and darkness in Cygnus imaged with a
hydrogen alpha filter on 19th Aug:

http://picasaweb.google.com/nightskyimaging/GulfOfMexicoRegion/
photo#5100782906389709218
regards

Malcolm


New image: NGC6960

Mike Chapa <mjchapa@...>
 

Howdy gang,

Recently found out that my mount had the DEC upgrade previously
done...tracking is amazing, but granted it is only at 1.25"/pixel:

http://www.chapaccd.com/deepsky/n6960.html

Cheers.

Mike Chapa
http://www.chapaccd.com


Re: Astro-Physics will attend AIC in October

David Baumgartner <cygnett@...>
 

I'll be there as well. Look forward to seeing you Howard...to thank you for all your help.

David Baumgartner

----- Original Message -----
From: astrokattner
To: ap-gto@...
Sent: Friday, August 24, 2007 9:02 AM
Subject: [ap-gto] Re: Astro-Physics will attend AIC in October


I'll be there too. Look forward to meeting you!

Ken

--- In ap-gto@..., "Marj" <marj@...> wrote:
>
> Marj, Roland and some other people on the AP staff will attend the
Astro-Imaging Conference on October 26-28 in San Jose. I understand
that there are only about 25 spaces left for additional participants.
Check this website for further information:
> www.aicccd.com
>
> We hope to meet many of you there! Who is going?
>
>
> 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: New image: NGC6960

Roland Christen
 

In a message dated 8/25/2007 12:49:24 PM Central Daylight Time,
mjchapa@... writes:


Recently found out that my mount had the DEC upgrade previously
done...tracking is amazing, but granted it is only at 1.25"/pixel:

http://www.chapaccd.com/deepsky/n6960.html
Very very nice!

Rolando


**************************************
Get a sneak peek of the all-new
AOL at http://discover.aol.com/memed/aolcom30tour


Re: AP 1200 tracking

tucstargzr
 

--- In ap-gto@..., "Ray Gralak" <rgr@...> wrote:

As a future feature I'm planning to add sound effects so that
as
you adjust the
mount closer PEMPro will beep faster and higher pitched until
you
reach the
correct position. This allows you to make the adjustments
right at
the mount
without having to go back and forth from the PC.

-Ray
I got a chuckle out of this, as a similar feature has been in
ECU
(Earth Centered Universe) Planetarium Software I've used for
years.

No offense meant, and I hope you don't perceive one.
Hi Tom,

No offense taken!

I wasn't aware that ECU uses sound but I'm guessing it's not for
the same
purpose. I'm guessing in ECU it is used to signal how close you
are pointing to
a target object by reading the scope coordinates. Is that correct?
In PEMPro's
case you are doing the opposite... while you adjust the mount's
altitude or
azimuth to achieve better polar alignment the scope coordinates do
_not_ change.
PEMPro has to take a picture, get the star(s) centroid coordinates
and update
the sound based on how far it is away from the theoretical target
position. And
to make matters fun, until the user finishes adjusting the mount,
drift is
occurring so the target position is changing!!! :-)

-Ray
Ray,

Your assumptions are correct about ECU, and I'm just a caveman
moving up to AP GTO mounts.

And yet what you are doing to nail the Polar Alignment and what
Dave LAne did to help push to guys find objects is so intuitive and
easy to follow (from the users standpoint).

Tom


Re: Astro-Physics will attend AIC in October

Richard Seavey <reseavey@...>
 

I will be at AIC and am looking forward to meeting you.

Richard

At 04:49 PM 8/22/2007 -0500, you wrote:

Marj, Roland and some other people on the AP staff will attend the
Astro-Imaging Conference on October 26-28 in San Jose. I understand that
there are only about 25 spaces left for additional participants. Check
this website for further information:
www.aicccd.com

We hope to meet many of you there! Who is going?

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.