Date   

Re: APPM Models

KHursh
 

Good tip Brian. I will do a 100 or so point model in the mean-time, before I can do the 'whole hog'


Re: APPM Models

 

It sounds like a good idea... but you will get a handful of fails
around the bright moon

if you are going to go through the effort of building a large model to
keep for a while, my experience suggests you want to use a relatively
moonless night

hth

Brian

On Fri, Nov 27, 2020 at 8:08 PM KHursh via groups.io
<khursh=yahoo.com@groups.io> wrote:

I think I will make good use of the full-ish moon to make a much bigger model.


--
Brian



Brian Valente
portfolio brianvalentephotography.com


Re: APPM Models

KHursh
 

I think I will make good use of the full-ish moon to make a much bigger model.


Re: APPM Models

 

FYI we have a 400 point model and have been using it for months

On Fri, Nov 27, 2020 at 7:18 PM KHursh via groups.io
<khursh=yahoo.com@groups.io> wrote:

Thanks Roland. I won't be moving it.


--
Brian



Brian Valente
portfolio brianvalentephotography.com


Re: APPM Models

KHursh
 

Thanks Roland. I won't be moving it.


Re: APPM Models

Roland Christen
 

If you don't move your mount, you can use it for a long time.

Rolando



-----Original Message-----
From: KHursh via groups.io <khursh@...>
To: main@ap-gto.groups.io
Sent: Fri, Nov 27, 2020 8:34 pm
Subject: [ap-gto] APPM Models

I ran my first successful model tonight of 30 points. Obviously I am going to want to try a much larger model, but I am wondering how long can I use it. I was thinking about a hundred or so. If I go for 150 or 200 or so, can I use that model for multiple days? A week?

Kevin

--
Roland Christen
Astro-Physics


APPM Models

KHursh
 

I ran my first successful model tonight of 30 points. Obviously I am going to want to try a much larger model, but I am wondering how long can I use it. I was thinking about a hundred or so. If I go for 150 or 200 or so, can I use that model for multiple days? A week?

Kevin


Re: 140/155 4” Field Flatteners

JT
 

Hi Rolando,

Does the Quad TCC require the same back distance to focal plane in AP 155 f/7 as in 130 f/6.3 GTX/GT.

Thanks,
JT

On Nov 27, 2020, at 20:53, dvjbaja <jpgleasonid@...> wrote:


Yep, T-ripper is good to process 1000 mosaic tiles done with 16803.  

-jg

On Fri, Nov 27, 2020 at 5:43 PM Dale Ghent <daleg@...> wrote:


> On Nov 27, 2020, at 19:46, dvjbaja <jpgleasonid@...> wrote:
>
> Yep, the 67 flatteners that came with my 155 f/7 and 180 f/7 create a lovely 100mm image circle with minimum vignetting and great sharpness across the entire circle. 

End-game for me is a 155/7, so this is good to know!

> A large array for that full coverage will be quite expensive, not to mention the cost of narrowband filters.   Smaller arrays work just fine for mosaics at a fraction of the cost.  Just say'n.   Oh and don't forget the PC requirements to handle stacks and stacks of 150 mp files. 

That's why the silicon gods granted us ThreadRipper! TRs help immensely even with the 60mp images of the IMX455 cameras. I'm waiting semi-patiently for AMD to sort out the supply of the new generation of ThreadRipper so I can return to doing things like local normalization and even 2x drizzling in PI and not have to wait half a lifetime for those processes to complete.

/dale





Re: 900 mount spurious RA motor slewing and stall

Roland Christen
 


trying the Dec cable on the RA motor, it popped back up again.  S
Trying the Dec cable on the RA motor will cause a motor stall because the RA cable is trying to run the motor at sidereal, but cannot because it is not plugged in.

If you want to try the Dec on RA, first you have to turn the RA tracking rate to STOP. Then you can plug the Dec cable into the RA motor and move it with the buttons at some slew speed. If this works, then  your RA motor is fine. Next plug the Dec cable into the Dec motor and move it with the buttons. If it works, then your Dec motor is fine. If both motors work with the Dec cable but not with the RA cable, then your Y cable has a defect in the RA portion.

Rolando


-----Original Message-----
From: Ken Sablinsky <kensablinsky@...>
To: main@ap-gto.groups.io
Sent: Fri, Nov 27, 2020 8:07 pm
Subject: Re: [ap-gto] 900 mount spurious RA motor slewing and stall

Thanks Jeff and Roland for the info. 

Roland, looks like I'll have to call George on Monday.  I performed your test of placing the RA cable to the Dec motor - at first it looked like it was the cable, but later trying the Dec cable on the RA motor, it popped back up again.  So I thought perhaps it was the bottom part of the Y-cable at fault, so I pulled out my old shorter Y-cable from my original CP2 box, and the same runaway RA movement occurs.  So either I've got two bad Y cables, or it's something more going on.

Thanks for your help in troubleshooting this for me.

-Ken 

--
Roland Christen
Astro-Physics


Re: 900 mount spurious RA motor slewing and stall

Ken Sablinsky
 

Thanks Jeff and Roland for the info. 

Roland, looks like I'll have to call George on Monday.  I performed your test of placing the RA cable to the Dec motor - at first it looked like it was the cable, but later trying the Dec cable on the RA motor, it popped back up again.  So I thought perhaps it was the bottom part of the Y-cable at fault, so I pulled out my old shorter Y-cable from my original CP2 box, and the same runaway RA movement occurs.  So either I've got two bad Y cables, or it's something more going on.

Thanks for your help in troubleshooting this for me.

-Ken 


Re: 140/155 4” Field Flatteners

dvjbaja
 

Yep, T-ripper is good to process 1000 mosaic tiles done with 16803.  

-jg

On Fri, Nov 27, 2020 at 5:43 PM Dale Ghent <daleg@...> wrote:


> On Nov 27, 2020, at 19:46, dvjbaja <jpgleasonid@...> wrote:
>
> Yep, the 67 flatteners that came with my 155 f/7 and 180 f/7 create a lovely 100mm image circle with minimum vignetting and great sharpness across the entire circle. 

End-game for me is a 155/7, so this is good to know!

> A large array for that full coverage will be quite expensive, not to mention the cost of narrowband filters.   Smaller arrays work just fine for mosaics at a fraction of the cost.  Just say'n.   Oh and don't forget the PC requirements to handle stacks and stacks of 150 mp files. 

That's why the silicon gods granted us ThreadRipper! TRs help immensely even with the 60mp images of the IMX455 cameras. I'm waiting semi-patiently for AMD to sort out the supply of the new generation of ThreadRipper so I can return to doing things like local normalization and even 2x drizzling in PI and not have to wait half a lifetime for those processes to complete.

/dale





Re: 140/155 4” Field Flatteners

Dale Ghent
 

On Nov 27, 2020, at 19:46, dvjbaja <jpgleasonid@gmail.com> wrote:

Yep, the 67 flatteners that came with my 155 f/7 and 180 f/7 create a lovely 100mm image circle with minimum vignetting and great sharpness across the entire circle.
End-game for me is a 155/7, so this is good to know!

A large array for that full coverage will be quite expensive, not to mention the cost of narrowband filters. Smaller arrays work just fine for mosaics at a fraction of the cost. Just say'n. Oh and don't forget the PC requirements to handle stacks and stacks of 150 mp files.
That's why the silicon gods granted us ThreadRipper! TRs help immensely even with the 60mp images of the IMX455 cameras. I'm waiting semi-patiently for AMD to sort out the supply of the new generation of ThreadRipper so I can return to doing things like local normalization and even 2x drizzling in PI and not have to wait half a lifetime for those processes to complete.

/dale


Re: 140/155 4” Field Flatteners

dvjbaja
 

Yep, the 67 flatteners that came with my 155 f/7 and 180 f/7 create a lovely 100mm image circle with minimum vignetting and great sharpness across the entire circle.  
 
A large array for that full coverage will be quite expensive, not to mention the cost of narrowband filters.   Smaller arrays work just fine for mosaics at a fraction of the cost.  Just say'n.   Oh and don't forget the PC requirements to handle stacks and stacks of 150 mp files.  

- jg


Re: 140/155 4” Field Flatteners

Roland Christen
 

The 67PF flatteners will cover 67mm with hardly any vignetting. In fact any of our flatteners will do it.

Rolando



-----Original Message-----
From: Dale Ghent <daleg@...>
To: main@ap-gto.groups.io
Sent: Fri, Nov 27, 2020 3:50 pm
Subject: Re: [ap-gto] 140/155 4” Field Flatteners


The Sony IMX411 is 67mm on the diagonal, 151mp (14304x10748, 3.76um). It's the medium format version of the IMX455. I would absolutely love to be able to image with such a sensor and the fov on a 155 would be jaw-dropping. It would definitely require a focuser upgrade to carry that monster, though. One can dream!

/dale

On Nov 27, 2020, at 16:20, Roland Christen via groups.io <chris1011@...> wrote:

The PF562 field flatteners cover 65mm easily. Do you think there will ever be larger chips?

Rolando



-----Original Message-----
From: Jeffrey Patrick via groups.io <Jpvettenut@...>
To: main@ap-gto.groups.io
Sent: Fri, Nov 27, 2020 3:01 pm
Subject: [ap-gto] 140/155 4” Field Flatteners

Roland,

What about larger chips in the future?
I made the mistake of not ordering it when I received my 140 back in 2008 and have been looking out for one on Astromart for quite some time.

Jeff

On Nov 27, 2020, at 12:28 PM, Roland Christen via groups.io <chris1011@...> wrote:


Nobody uses film any more.

Rolando



-----Original Message-----
From: Jeffrey Patrick via groups.io <Jpvettenut@...>
To: main@ap-gto.groups.io; main@ap-ug.groups.io
Sent: Fri, Nov 27, 2020 1:24 pm
Subject: Re: [ap-gto] 130 EDF Starfire Field Flatteners

Roland,

Any interest /possibility in a run of the 4” FF for the 155/140??

Jeff

On Nov 27, 2020, at 11:06 AM, Roland Christen via groups.io <chris1011@...> wrote:


Yes, that is the one we are looking to make. If enough interest (seems to be) we will make a small final run. 

Rolando



-----Original Message-----
From: Jerry <astrojer@...>
To: main@ap-gto.groups.io
Sent: Fri, Nov 27, 2020 12:48 pm
Subject: Re: [ap-gto] 130 EDF Starfire Field Flatteners

Are you talking about the 67PF562 Field Flattener?

I have a Starfire 130mm f/6 Starfire EDF APO.  I believe the 67PF562 is the flattener for this scope and have been looking to purchase one for a while.

-- 
Roland Christen
Astro-Physics

-- 
Roland Christen
Astro-Physics

-- 
Roland Christen
Astro-Physics


--
Roland Christen
Astro-Physics


Re: Pickering's Triangle

Luca Marinelli
 

Thank you very much for the positive comments!

The ASI1600MM in spite of all its well known limitations is a wonderful little camera, especially for narrowband imaging. I have a QHY 294M coming that will replace it and, if my calculations are correct, it should almost double the etendue of my imaging system with minimal loss in resolution. In those rare nights when seeing is exceptional, the unbinned mode with 2.3um pixels will sacrifice some speed for higher resolution. 

Luca


Re: Pickering's Triangle

Dean Jacobsen
 

Excellent!  The ASI1600MM sure does a fine job in the hands of an expert user.
--
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: Pickering's Triangle

Karen Christen
 

Wow, that’s gorgeous, Luca.  It has a wonderful artistic quality.  Thank you for sharing, and we’re delighted to hear you’re making good use of your astro-gear!

Karen

AP 

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Luca Marinelli
Sent: Friday, November 27, 2020 11:48 AM
To: main@ap-gto.groups.io
Subject: [ap-gto] Pickering's Triangle

 

Dear All,

Over the Summer I collected 19 hours of data on Pickering's Triangle using the AP1100GTO with a 10in Newt. Today my image was selected as image of the day on Astrobin! 

This Summer I built an observatory in my backyard and have now a Mach1GTO (soon to be replaced by a Mach2) and an AP1100 on two piers. Not having to set up every night I image has been such a huge step un in quality of data and life! 

The high resolution image with full acquisition details is on astrobin: https://astrob.in/xm1fcn/0/

Happy belated Thanksgiving!

--Luca


--
Karen Christen
Astro-Physics


Re: Do NOT use ASCOM Platform v. 6.5 with APCC Pro #APCC #ASCOM_V2_Driver

Karen Christen
 

I’ve also un-pinned this thread from the top of the Messages list on the ap-gto Groups.io group.  That was probably misleading, as well.

Karen

AP

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Marj Christen
Sent: Friday, November 27, 2020 11:56 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Do NOT use ASCOM Platform v. 6.5 with APCC Pro #APCC #ASCOM_V2_Driver

 

The website is now updated. Thank you for this discussion.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Jerry
Sent: Friday, November 27, 2020 7:59 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Do NOT use ASCOM Platform v. 6.5 with APCC Pro #APCC #ASCOM_V2_Driver

 

Below is what is currently shown on the AP website (my goto when determining what version of ASCOM Platform to use):

ASCOM V2 Driver & Platform

ASCOM V2 Driver current version 

ASCOM V6.4SP1 Platform  for use with the V2 Driver and APCC - Thanks to the ASCOM Initiative.  Do not use V6.5 at this time. 


--
Karen Christen
Astro-Physics


Re: 140/155 4” Field Flatteners

Jeffrey Patrick
 

Roland,

Of course no one knows what lies in the future, but I believe FLI already offers cameras with sensor diagonals of around 87mm.

Too expensive for me at this point, but once retirement rolls around I’d like to already have the optics needed for my 140.

I see that the 4” FF for the 160 is still available, but I understand that these may still be in stock from past production.

Not trying to be a pain, just asking while the possibility still exists.

I realize that glass availability may be an issue, plus your time is most likely already full with other projects.

I wish you, your family and all those at Astro-Physics a Happy and Healthy Holiday season.

Respectfully,

Jeff

On Nov 27, 2020, at 1:20 PM, Roland Christen via groups.io <chris1011@...> wrote:


The PF562 field flatteners cover 65mm easily. Do you think there will ever be larger chips?

Rolando



-----Original Message-----
From: Jeffrey Patrick via groups.io <Jpvettenut@...>
To: main@ap-gto.groups.io
Sent: Fri, Nov 27, 2020 3:01 pm
Subject: [ap-gto] 140/155 4” Field Flatteners

Roland,

What about larger chips in the future?
I made the mistake of not ordering it when I received my 140 back in 2008 and have been looking out for one on Astromart for quite some time.

Jeff

On Nov 27, 2020, at 12:28 PM, Roland Christen via groups.io <chris1011@...> wrote:


Nobody uses film any more.

Rolando



-----Original Message-----
From: Jeffrey Patrick via groups.io <Jpvettenut@...>
To: main@ap-gto.groups.io; main@ap-ug.groups.io
Sent: Fri, Nov 27, 2020 1:24 pm
Subject: Re: [ap-gto] 130 EDF Starfire Field Flatteners

Roland,

Any interest /possibility in a run of the 4” FF for the 155/140??

Jeff

On Nov 27, 2020, at 11:06 AM, Roland Christen via groups.io <chris1011@...> wrote:


Yes, that is the one we are looking to make. If enough interest (seems to be) we will make a small final run.

Rolando



-----Original Message-----
From: Jerry <astrojer@...>
To: main@ap-gto.groups.io
Sent: Fri, Nov 27, 2020 12:48 pm
Subject: Re: [ap-gto] 130 EDF Starfire Field Flatteners

Are you talking about the 67PF562 Field Flattener?

I have a Starfire 130mm f/6 Starfire EDF APO.  I believe the 67PF562 is the flattener for this scope and have been looking to purchase one for a while.

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: 140/155 4” Field Flatteners

Dale Ghent
 


The Sony IMX411 is 67mm on the diagonal, 151mp (14304x10748, 3.76um). It's the medium format version of the IMX455. I would absolutely love to be able to image with such a sensor and the fov on a 155 would be jaw-dropping. It would definitely require a focuser upgrade to carry that monster, though. One can dream!

/dale

On Nov 27, 2020, at 16:20, Roland Christen via groups.io <chris1011@...> wrote:

The PF562 field flatteners cover 65mm easily. Do you think there will ever be larger chips?

Rolando



-----Original Message-----
From: Jeffrey Patrick via groups.io <Jpvettenut@...>
To: main@ap-gto.groups.io
Sent: Fri, Nov 27, 2020 3:01 pm
Subject: [ap-gto] 140/155 4” Field Flatteners

Roland,

What about larger chips in the future?
I made the mistake of not ordering it when I received my 140 back in 2008 and have been looking out for one on Astromart for quite some time.

Jeff

On Nov 27, 2020, at 12:28 PM, Roland Christen via groups.io <chris1011@...> wrote:


Nobody uses film any more.

Rolando



-----Original Message-----
From: Jeffrey Patrick via groups.io <Jpvettenut@...>
To: main@ap-gto.groups.io; main@ap-ug.groups.io
Sent: Fri, Nov 27, 2020 1:24 pm
Subject: Re: [ap-gto] 130 EDF Starfire Field Flatteners

Roland,

Any interest /possibility in a run of the 4” FF for the 155/140??

Jeff

On Nov 27, 2020, at 11:06 AM, Roland Christen via groups.io <chris1011@...> wrote:


Yes, that is the one we are looking to make. If enough interest (seems to be) we will make a small final run. 

Rolando



-----Original Message-----
From: Jerry <astrojer@...>
To: main@ap-gto.groups.io
Sent: Fri, Nov 27, 2020 12:48 pm
Subject: Re: [ap-gto] 130 EDF Starfire Field Flatteners

Are you talking about the 67PF562 Field Flattener?

I have a Starfire 130mm f/6 Starfire EDF APO.  I believe the 67PF562 is the flattener for this scope and have been looking to purchase one for a while.

-- 
Roland Christen
Astro-Physics

-- 
Roland Christen
Astro-Physics

-- 
Roland Christen
Astro-Physics

7881 - 7900 of 82298