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Re: APPM Models
KHursh
I think I will make good use of the full-ish moon to make a much bigger model.
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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:
-- Brian Brian Valente portfolio brianvalentephotography.com
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Re: APPM Models
KHursh
Thanks Roland. I won't be moving it.
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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
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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
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Re: 140/155 4” Field Flatteners
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:
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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
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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
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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:
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Re: 140/155 4” Field Flatteners
Dale Ghent
On Nov 27, 2020, at 19:46, dvjbaja <jpgleasonid@gmail.com> wrote: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
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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
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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 /dale
On Nov 27, 2020, at 16:20, Roland Christen via groups.io <chris1011@...> wrote: -- Roland Christen Astro-Physics
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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
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Re: Pickering's Triangle
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
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Re: Pickering's Triangle
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, -- Karen Christen Astro-Physics
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Re: Do NOT use ASCOM Platform v. 6.5 with APCC Pro
#APCC
#ASCOM_V2_Driver
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
From:
main@ap-gto.groups.io [mailto:main@ap-gto.groups.io]
On Behalf Of Jerry
Below is what is currently shown on the AP website (my goto when determining what version of ASCOM Platform to use): ASCOM V2 Driver & PlatformASCOM 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
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Re: 140/155 4” Field Flatteners
Jeffrey Patrick
Roland,
toggle quoted messageShow quoted text
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:
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Re: 140/155 4” Field Flatteners
Dale Ghent
/dale
On Nov 27, 2020, at 16:20, Roland Christen via groups.io <chris1011@...> wrote:
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Re: 140/155 4” Field Flatteners
Roland Christen
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:
-- Roland Christen Astro-Physics
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140/155 4” Field Flatteners
Jeffrey Patrick
Roland,
toggle quoted messageShow quoted text
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:
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