Date   

Re: Pre-owned 900GTO Questions

sroberts84
 

Hello John,
What exactly did you mean by:: 

... "decided to install a new battery in anticipation of the new software. I did that last month. Not difficult just have to be gentle around the optical cables." 

exactly? What optical cables are you referring to here? 

Thanks! 

S Roberts 

---
We've got fifteen minutes, Freddo, it's worse than I thought!


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Elenillor <elenillor@...>
Sent: 20 February 2021 13:21
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Pre-owned 900GTO Questions
 
I got my keypad in 2007 with a Mach 1 and decided to install a new battery in anticipation of the new software. I did that last month. Not difficult just have to be gentle around the optical cables. A year ago purchased a CP4 because the new keypad software was going to be coming out soon. While I can use Sky Safari with the CP4 I would am looking forward to the new features in the keypad.

John


On Sat, Feb 20, 2021 at 07:51 AM, W Hilmo wrote:

My keypad is vintage 2012, and I have never replaced the battery, so I am sure that it’s nearly ready to give up.  My plan is to hold off on doing anything to it until I can send it back to Astro-Physics to update it to the latest keypad, with the correct labels.  I’ll have them replace the battery at the same time.

 

-Wade

 


Re: Pre-owned 900GTO Questions

Jeffrey Wolff
 

My 900 mount attaches to the 900RPA on top of my FSA. The 1100 base includes the equivalent of the 900RPA as part of the mount.

https://astro-physics.info/tech_support/mounts/900gto/900rpa-rot-pier-adap.pdf


Re: [ap-ug] Reflections Nightmare - I'm ready to give up the hobby!

Ron Kramer
 

I am in Bortle 7 on the edge of the 2nd largest city in Michigan (2nd to Detroit). On a good night I can see the 5th star of Cassiopeia. But it's often washed out.
I'm also often under the jet stream here in West Michigan.  I have tones of 100ft tree's so I have a short window UP and I wait for things to pass over. 
Setup for MOST of my work is RASA 11 with OSC camera. Some work is 1600mm with NB filters. Some older shots are a 152mm tripet. (but I used flats back then).
Nexdome so it's all automated from in the house. The dome is 100 yards from where I work (Sitting at this desk in the house). 



On Fri, Feb 19, 2021 at 1:42 PM Cheng-Yang Tan via groups.io <cytan299=yahoo.com@groups.io> wrote:
Wow! That's great processing. What's your setup and site?

cytan

On Friday, February 19, 2021, 11:44:28 AM CST, Ron Kramer <ronkramer1957@...> wrote:


WOW that's really irritating. At first I read your text and thought oh brother.  Then I went to your subs and I'd be ready to quit too.  I've been at this heavily for only 4 years and I've never had such a reflection.
I don't do darks or flats either.  My rule..  KEEP IT SIMPLE.  I just push buttons in the house, I don't even go outside. My scope doesn't even have a lens cap. 
I'm a retired studio photographer and yet I still have no clue what to suggest.  = (

https://www.flickr.com/photos/portranet/albums/72157717959454497

On Sat, Feb 13, 2021 at 10:47 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
Hello,

I cannot be sure about our QuadTCC working with your scope to produce no reflections. However, i do know that our 130 field flattener will work and produce zero reflections. It has been designed with convex radii so that any light reflected from the filters will be dispersed toward the outside of the focal plane and not towards the middle.

here is a simple test that you can do to determine where the reflections originate. Take an image with your filters and no field flattener or telecompressor in the optical path. If you still see reflections, then it is caused by your filters. Filters like the Astrodon series, have a sharp cutoff of each color, so they will pass the principal color and reflect the ones outside their passband. The colors that are reflected back up toward the telecompressor will then be rejected if they are reflected back from the telecompressor down to the chip. They will not be able to pass thru the filter again. Other filters may have less steep cutoff, and thereby allow some of the reflected light to pass again thru the filter and produce halos or reflection artifacts.

I have used Astrodon filters in all of my cameras since many years now and have never seen reflections like the ones in your images. However, I know about your reflections because I did have multiple reflections from a set of less expensive filters.

As far as using our 130 Field Flattener, I can assure you that this will not produce reflections, even if your filters do not have a sharp cutoff. If you have been watching our group for some time, you may have seen images taken by Ignacio, a lot of them became APOD images, and you will see the contrast and zero reflections in all of his images. I worked with him years ago to produce just the right Flattener design geometry to eliminate even the slightest hint of reflections - Ignacio was extremely demanding that this optic works perfectly.

So, the solution might require both testing a different filter and a different field flattener. The problem is not coming from the main objective for sure. So try my suggestion of removing the field flattener first and see if the reflections go away. Then the solution might be either change the filters or change the field flattener or both for best results.

Rolando


-----Original Message-----
From: Jon <jonkelly999@...>
To: main@ap-ug.groups.io
Sent: Sat, Feb 13, 2021 6:08 am
Subject: [ap-ug] Reflections Nightmare - I'm ready to give up the hobby!

I have posted previously about reflections with a Riccardi reducer but now have the same issue with a native flattener and I have tried everything I can think off. 

My objective is to purchase a QUADTCC to replace the Riccardi but I cant do this until I sort out the existing reflections which I now suspect are coming from the sensor/filters.

I have now spent over 20 imaging sessions since October trying to sort out the issue and it has become such a chore that I'm ready to give up the hobby - can anyone help? 

Equipment - CFF 135/926mm, QHY600L, Chroma LRGB and 3nm Ha/OIII/SII. 

I have tried reversing filters individually in all permutations, moved spacing from between Objective and Filters to between Filters and Sensor and its just balloon squeezing. One filter works, then another one doesn't. Lights work but flats don't or vice versa. Nothing I do seems to help.

I can take images with no bright stars ok but as soon as I try something like the Pleiades I have issues. 

These are the latest test images on Pleiades, one for each filter - all 120s subs. All have reflections.
https://www.dropbox.com/sh/gn2x15vu8hs1whn/AADquWhGxYyE_SvfevDrYyzKa?dl=0

Can these reflections be resolved or am I wasting my time?

I would be very grateful if anyone could help or work with me to try and sort this out.

Thanks
Jon

--
Roland Christen
Astro-Physics



--




Re: Pre-owned 900GTO Questions

Chris White
 

On Sat, Feb 20, 2021 at 04:47 PM, Karen Christen wrote:
Alternatively, if you highlight the portion of the original message you want to quote, then click Reply, the highlighted portion will be automatically included in your reply message.
Hey look at that!  Thank you Karen.  Appreciate the lesson!


Re: Pre-owned 900GTO Questions

Karen Christen
 

Hi Chris,

 

>> Also, how do you quote someone on this forum? 

 

It depends on how you’re interacting with the forum.  For example, I’m using Outlook to respond to you.  I’ve included your message below, and I copied your question and pasted it above.  Both work equally as well.

 

If you’re reading and responding to messages on Groups.io, when you Reply, the original message is not automatically included.  In your reply message, look just to the left of Formats in the toolbar for the quote bubble.  Clicking that will quote the entire message to which you’re replying.  You can include or delete what you like from there.  Alternatively, if you highlight the portion of the original message you want to quote, then click Reply, the highlighted portion will be automatically included in your reply message.  This link also describes this process:  https://groups.io/helpcenter/membersmanual/1/working-with-group-messages/quoting-messages-you-are-replying-to

 

Welcome to the Astro-Nuts, Chris, and have fun with the new 900GTO.

Karen

AP

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of chris.white@...
Sent: Saturday, February 20, 2021 3:32 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Pre-owned 900GTO Questions

 

Steve,

The 119FSA is available, and if you buy the HD Tripod through AP it's paired with it... but from what I gathered from earlier comments in this thread is that there is an adapter still needed so the mount can mount and use the azimuth adjustment.  I might have read it wrong...

Also, how do you quote someone on this forum?  Stupid question probably, but I'm new here and cant see a button for it. 


--
Karen Christen
Astro-Physics


Re: Pre-owned 900GTO Questions

Chris White
 

Steve,

The 119FSA is available, and if you buy the HD Tripod through AP it's paired with it... but from what I gathered from earlier comments in this thread is that there is an adapter still needed so the mount can mount and use the azimuth adjustment.  I might have read it wrong...

Also, how do you quote someone on this forum?  Stupid question probably, but I'm new here and cant see a button for it. 


Re: Pre-owned 900GTO Questions

Elenillor
 

I got my keypad in 2007 with a Mach 1 and decided to install a new battery in anticipation of the new software. I did that last month. Not difficult just have to be gentle around the optical cables. A year ago purchased a CP4 because the new keypad software was going to be coming out soon. While I can use Sky Safari with the CP4 I would am looking forward to the new features in the keypad.

John


On Sat, Feb 20, 2021 at 07:51 AM, W Hilmo wrote:

My keypad is vintage 2012, and I have never replaced the battery, so I am sure that it’s nearly ready to give up.  My plan is to hold off on doing anything to it until I can send it back to Astro-Physics to update it to the latest keypad, with the correct labels.  I’ll have them replace the battery at the same time.

 

-Wade

 


Re: Help with "VPort2 / Fault / Sync Target: Valid Alt/Az, RA/Dec, HA/Dec has not been received!" errors? #APCC

Ray Gralak
 

Hi Rodolphe,

 

> Since I installed APCC Std update v1.8.8.14 (which was working wonderfully well just before), I systematically get

> comm errors leading to fail capture sequences in SGP.

 

Check your connection options match the mount and driver settings in APPCC in this screen shot:

 

 

-Ray

 

> -----Original Message-----

> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Rodolphe

> Sent: Saturday, February 20, 2021 10:43 AM

> To: main@ap-gto.groups.io

> Subject: [ap-gto] Help with "VPort2 / Fault / Sync Target: Valid Alt/Az, RA/Dec, HA/Dec has not been received!"

> errors? #APCC

>

> Hello

> Since I installed APCC Std update v1.8.8.14 (which was working wonderfully well just before), I systematically get

> comm errors leading to fail capture sequences in SGP.

> Slewing works fine.

> Centering always fail (now). This is the error that shows on screen:

> "VPort2 / Fault / Sync Target: Valid Alt/Az, RA/Dec, HA/Dec has not been received!"

> Tried to remove the virtual ports, reinstalled them, but now the AP ASCOM driver can't find them anymore.

> Note sure a Windows update that happened just before (or after) I updated APCC didn't also screwed my

> installation.

> Happy to share logs if requested.

> Should I remove APCC and the ASCOM driver altogether, and reinstall?

> Any other options?

> Thanks for your help.

> KR

> Rodolphe


Re: [ap-ug] Reflections Nightmare - I'm ready to give up the hobby!

Christopher Erickson
 

Maybe this particular camera was assembled incorrectly. Things like that happen. Maybe contact your camera dealer and/or manufacturer.

-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   

On Fri, Feb 19, 2021, 1:23 PM dvjbaja <jpgleasonid@...> wrote:
Definitely try taking an image without your flattener and shooting without any filter?  May be a process of elimination, backtracking the cause.  If you have or can borrow a different camera, I would also try that. 



Sent via the Samsung Galaxy Note9, an AT&T 5G Evolution capable smartphone


-------- Original message --------
From: "Cheng-Yang Tan via groups.io" <cytan299=yahoo.com@groups.io>
Date: 2/19/21 10:42 AM (GMT-08:00)
Subject: Re: [ap-gto] [ap-ug] Reflections Nightmare - I'm ready to give up the hobby!

Wow! That's great processing. What's your setup and site?

cytan

On Friday, February 19, 2021, 11:44:28 AM CST, Ron Kramer <ronkramer1957@...> wrote:


WOW that's really irritating. At first I read your text and thought oh brother.  Then I went to your subs and I'd be ready to quit too.  I've been at this heavily for only 4 years and I've never had such a reflection.
I don't do darks or flats either.  My rule..  KEEP IT SIMPLE.  I just push buttons in the house, I don't even go outside. My scope doesn't even have a lens cap. 
I'm a retired studio photographer and yet I still have no clue what to suggest.  = (

https://www.flickr.com/photos/portranet/albums/72157717959454497

On Sat, Feb 13, 2021 at 10:47 AM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
Hello,

I cannot be sure about our QuadTCC working with your scope to produce no reflections. However, i do know that our 130 field flattener will work and produce zero reflections. It has been designed with convex radii so that any light reflected from the filters will be dispersed toward the outside of the focal plane and not towards the middle.

here is a simple test that you can do to determine where the reflections originate. Take an image with your filters and no field flattener or telecompressor in the optical path. If you still see reflections, then it is caused by your filters. Filters like the Astrodon series, have a sharp cutoff of each color, so they will pass the principal color and reflect the ones outside their passband. The colors that are reflected back up toward the telecompressor will then be rejected if they are reflected back from the telecompressor down to the chip. They will not be able to pass thru the filter again. Other filters may have less steep cutoff, and thereby allow some of the reflected light to pass again thru the filter and produce halos or reflection artifacts.

I have used Astrodon filters in all of my cameras since many years now and have never seen reflections like the ones in your images. However, I know about your reflections because I did have multiple reflections from a set of less expensive filters.

As far as using our 130 Field Flattener, I can assure you that this will not produce reflections, even if your filters do not have a sharp cutoff. If you have been watching our group for some time, you may have seen images taken by Ignacio, a lot of them became APOD images, and you will see the contrast and zero reflections in all of his images. I worked with him years ago to produce just the right Flattener design geometry to eliminate even the slightest hint of reflections - Ignacio was extremely demanding that this optic works perfectly.

So, the solution might require both testing a different filter and a different field flattener. The problem is not coming from the main objective for sure. So try my suggestion of removing the field flattener first and see if the reflections go away. Then the solution might be either change the filters or change the field flattener or both for best results.

Rolando


-----Original Message-----
From: Jon <jonkelly999@...>
To: main@ap-ug.groups.io
Sent: Sat, Feb 13, 2021 6:08 am
Subject: [ap-ug] Reflections Nightmare - I'm ready to give up the hobby!

I have posted previously about reflections with a Riccardi reducer but now have the same issue with a native flattener and I have tried everything I can think off. 

My objective is to purchase a QUADTCC to replace the Riccardi but I cant do this until I sort out the existing reflections which I now suspect are coming from the sensor/filters.

I have now spent over 20 imaging sessions since October trying to sort out the issue and it has become such a chore that I'm ready to give up the hobby - can anyone help? 

Equipment - CFF 135/926mm, QHY600L, Chroma LRGB and 3nm Ha/OIII/SII. 

I have tried reversing filters individually in all permutations, moved spacing from between Objective and Filters to between Filters and Sensor and its just balloon squeezing. One filter works, then another one doesn't. Lights work but flats don't or vice versa. Nothing I do seems to help.

I can take images with no bright stars ok but as soon as I try something like the Pleiades I have issues. 

These are the latest test images on Pleiades, one for each filter - all 120s subs. All have reflections.
https://www.dropbox.com/sh/gn2x15vu8hs1whn/AADquWhGxYyE_SvfevDrYyzKa?dl=0

Can these reflections be resolved or am I wasting my time?

I would be very grateful if anyone could help or work with me to try and sort this out.

Thanks
Jon

--
Roland Christen
Astro-Physics



--


Re: So, I hear that the 1100 notifications have began, along with a 21% price increase...

weems@...
 

Then there are those of us who are hoping for a next round of 1600's - so there will be a new batch of used 1100's out there ;-)  While I'm very happy with my 900, I'm pushing its limits, and it would be great to have something with more capacity in the observatory, then use the 900 to replace the mount I take to school for evening observing sessions with my students. So please, bring on the 1600s!

And since there was a digression about EV's, I'll chime in that I too have one. But mine has three wheels, disk brakes, 30 gears, a high tech suspension, rides lower than a sports car, and is completely open. It also lets me exercise during drive time. And it came from another US company that prides itself on fine engineering. 

Chip


Help with "VPort2 / Fault / Sync Target: Valid Alt/Az, RA/Dec, HA/Dec has not been received!" errors? #APCC

Rodolphe
 

Hello
Since I installed APCC Std update v1.8.8.14 (which was working wonderfully well just before), I systematically get comm errors leading to fail capture sequences in SGP.
Slewing works fine.
Centering always fail (now). This is the error that shows on screen:
"VPort2 / Fault / Sync Target: Valid Alt/Az, RA/Dec, HA/Dec has not been received!"
Tried to remove the virtual ports, reinstalled them, but now the AP ASCOM driver can't find them anymore.
Note sure a Windows update that happened just before (or after) I updated APCC didn't also screwed my installation.
Happy to share logs if requested.
Should I remove APCC and the ASCOM driver altogether, and reinstall?
Any other options?
Thanks for your help.
KR
Rodolphe


Re: Pre-owned 900GTO Questions

 

Hi, thought I’d offer my insight being I have a 2010 ap900 mount on an AP portable pier. I’m switching from my portable pier to a permanently mounted pier and all I need was the flat surface adapter (119FSA) whic I got a couple of weeks ago. Obviously your needs will vary depending on what equipment you have etc, but I think most of what you need you can still get from AP. Here is a link to their site where I searched (900 pier+adapter), it brought up all sorts of stuff, but I think you should still be able to get what you need. Good Luck!

On Feb 20, 2021, at 9:00 AM, chris.white@... wrote:

Thats interesting.  I did not realize this. I emailed Dave to see what it would take.  Thanks for the information. 


Re: How to forbid anything one side of the meridian #APCC #ASCOM_V2_Driver

Ray Gralak
 

Hi Frédéric,

 

Yes, APCC can force the mount to stay on one pier-side. The way to do this is to set up the East/West limits in the meridian limits editor.

 

Here’s a short video where I show how to do this:

 

https://www.youtube.com/watch?v=eBUj1WgFf3k

 

Given the picture of your setup you should test this carefully. Setting incorrect limits could allow the scope to be slewed to a position that would cause a telescope collision with the pier, wall, or railing.

 

-Ray

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Frederic Jabet
Sent: Saturday, February 20, 2021 7:34 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] How to forbid anything one side of the meridian #APCC #ASCOM_V2_Driver

 

Hello all, 

i have this fantastic new telescope, a Skyvision Cassegrain Newton 300, mounted on my faithful AP900 with CP4.
My gear is located on a terrace that is long but not very large, only 1,20m between the wall and the guard. Basically I can point anything east, but pointing south west, although possible, requires some care as the telescope could hit the wall, or the payload on the cassegrain focuser the guard.

So basically I want the telescope to stay on the west side of the pier and NOT flip.

I'm operating in auto observation with Prism, and it has some features to limit pointing and slewing, but I'd prefer to use AP features as well. I do have APCC std version.
Inside APCC, I did find features to limit the tracking, it is working fine. 
But the slewing is another story : each time I order a slew to the west side of the meridian, the mount starts a flip till the end.
So I'm wondering : is it really possible to limit the action to one side of the meridian no matter what (ASCOM slewing) using APCC ?

Thanks in advance, 

Frédéric.


Re: How to forbid anything one side of the meridian #APCC #ASCOM_V2_Driver

jimmyjujames
 

 
I have the GTOCP3 panel on my 900GTO and like to try to track the ISS from SW horizon to NE horizon with no meridian flip.
I don't use Ascom or APCC when tracking the ISS.
To do so I change the meridian delay in keypad from 0W to 6W(western horizon)
That keeps the scope on the west side for any position in the sky.
My starting point is with the scope upside down and pointing above the SW horizon.
 
Jimmy
 


Re: So, I hear that the 1100 notifications have began, along with a 21% price increase...

Karen Christen
 

Hi Tom,

 

Since you asked, I will let the group know when all 1100GTO mounts are spoken for.  It will likely be a few months yet. 

Karen

AP

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Tom Blahovici
Sent: Saturday, February 20, 2021 10:51 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] So, I hear that the 1100 notifications have began, along with a 21% price increase...

 

Will we get information as to when notifications will be complete? Just in case we aren't in the running for this production?
I once signed up for a 155mm scope and never received the notification. Don't know if it was an email issue or why. Then production stopped and I never got my AP scope.
I'm not getting any younger, so don't think I can wait until the next run, whenever that is.
Thanks


--
Karen Christen
Astro-Physics


How to forbid anything one side of the meridian #APCC #ASCOM_V2_Driver

Frederic Jabet
 

Hello all, 

i have this fantastic new telescope, a Skyvision Cassegrain Newton 300, mounted on my faithful AP900 with CP4.
My gear is located on a terrace that is long but not very large, only 1,20m between the wall and the guard. Basically I can point anything east, but pointing south west, although possible, requires some care as the telescope could hit the wall, or the payload on the cassegrain focuser the guard.

So basically I want the telescope to stay on the west side of the pier and NOT flip.

I'm operating in auto observation with Prism, and it has some features to limit pointing and slewing, but I'd prefer to use AP features as well. I do have APCC std version.
Inside APCC, I did find features to limit the tracking, it is working fine. 
But the slewing is another story : each time I order a slew to the west side of the meridian, the mount starts a flip till the end.
So I'm wondering : is it really possible to limit the action to one side of the meridian no matter what (ASCOM slewing) using APCC ?

Thanks in advance, 

Frédéric.


Re: So, I hear that the 1100 notifications have began, along with a 21% price increase...

Tom Blahovici
 

Will we get information as to when notifications will be complete? Just in case we aren't in the running for this production?
I once signed up for a 155mm scope and never received the notification. Don't know if it was an email issue or why. Then production stopped and I never got my AP scope.
I'm not getting any younger, so don't think I can wait until the next run, whenever that is.
Thanks


Re: My Mach2 first light

Dean Jacobsen
 

Nice image.  I will have to put M41 on my list.  -20 declination is about as far south as I can image and get a good result.
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/ 
Amateur Radio Call Sign - W6DBJ


Re: Pre-owned 900GTO Questions

Chris White
 

Thats interesting.  I did not realize this. I emailed Dave to see what it would take.  Thanks for the information. 


Re: Pre-owned 900GTO Questions

Dean Jacobsen
 

On Sat, Feb 20, 2021 at 05:44 AM, <weems@...> wrote:
n addition to the Losmandy adapter, you would also need the 900 Standard Pier Adapter, which is no longer available.
I had forgotten about the Standard Pier Adapter.  The guy who bought my 900 had to find one used on Astromart.  I needed to keep mine because that is what the adapter for the Mach2 is bolted into.
 
--
Dean Jacobsen
http://astrophoto.net/wp/
Image Gallery - http://astrophoto.net/wp/image-gallery/
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/ 
Amateur Radio Call Sign - W6DBJ

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