|
Re: Eggy Stars with Polar Axis Correction
BTW, although it can be true that distortion is symmetric, there is no guarantee of that, or that it is at the exact center of an image. For example, if the scope is not collimated or there is sensor
BTW, although it can be true that distortion is symmetric, there is no guarantee of that, or that it is at the exact center of an image. For example, if the scope is not collimated or there is sensor
|
By
Ray Gralak
·
#87714
·
|
|
Re: Eggy Stars with Polar Axis Correction
So if one used a sub frame in this distorted field scenario the solving results would be of greater accuracy since the distorted portion of the frame was no longer present?
From:
So if one used a sub frame in this distorted field scenario the solving results would be of greater accuracy since the distorted portion of the frame was no longer present?
From:
|
By
Bill Long
·
#87713
·
|
|
Re: Eggy Stars with Polar Axis Correction
The center coordinates are determined based on the solving of angles and distances between stars. If these values are distorted then the center coordinates can be miscalculated to some degree. So,
The center coordinates are determined based on the solving of angles and distances between stars. If these values are distorted then the center coordinates can be miscalculated to some degree. So,
|
By
Ray Gralak
·
#87712
·
|
|
Re: Eggy Stars with Polar Axis Correction
On Sat, Jul 23, 2022 at 03:37 PM, Ray Gralak wrote:
I don't know how Pinpoint does it either, but it is obvious how it could be done dynamically without a model.
The reference is the star catalog
On Sat, Jul 23, 2022 at 03:37 PM, Ray Gralak wrote:
I don't know how Pinpoint does it either, but it is obvious how it could be done dynamically without a model.
The reference is the star catalog
|
By
Chris White
·
#87711
·
Edited
|
|
Re: Mach2 USB
Hi Dale,
To prevent this for both USB and Ethernet cables, I first wrap the cable around the OTA or focuser a couple of times and in a loose knot, then connect the cable to the device. If there is a
Hi Dale,
To prevent this for both USB and Ethernet cables, I first wrap the cable around the OTA or focuser a couple of times and in a loose knot, then connect the cable to the device. If there is a
|
By
Ray Gralak
·
#87710
·
|
|
Re: Mach2 USB
Yeah a big advantage with ethernet is that you can easily crimp your own cables. I wired my house with cat6 (I actually do run a 10Gb ethernet network here). I've got a few hundred feet of cable in my
Yeah a big advantage with ethernet is that you can easily crimp your own cables. I wired my house with cat6 (I actually do run a 10Gb ethernet network here). I've got a few hundred feet of cable in my
|
By
Dale Ghent
·
#87709
·
|
|
Re: Mach2GTO-L cross-threading cw shaft?
#Mach2GTO
Nice!
Sent from Yahoo Mail for iPad
Nice!
Sent from Yahoo Mail for iPad
|
By
Cheng-Yang Tan
·
#87708
·
|
|
Re: Eggy Stars with Polar Axis Correction
I don't know how Pinpoint does it either, but it is obvious how it could be done dynamically without a model.
The reference is the star catalog that is being used. Once the app finds the approximate
I don't know how Pinpoint does it either, but it is obvious how it could be done dynamically without a model.
The reference is the star catalog that is being used. Once the app finds the approximate
|
By
Ray Gralak
·
#87707
·
|
|
Re: Mach2 USB
It may have been that you started NINA first, then connected the camera to your system, and didn't press the refresh button to update the list of connected cameras?
/dale
It may have been that you started NINA first, then connected the camera to your system, and didn't press the refresh button to update the list of connected cameras?
/dale
|
By
Dale Ghent
·
#87706
·
|
|
Re: Mach2 USB
What you think is correct - from an app's perspective, cameras can do only one thing at a time. The image has to be downloaded before the command to start the next exposure can be given. But, on CMOS
What you think is correct - from an app's perspective, cameras can do only one thing at a time. The image has to be downloaded before the command to start the next exposure can be given. But, on CMOS
|
By
Dale Ghent
·
#87705
·
|
|
Re: Mach2 USB
60 millions pixels, times 16 bits per pixel, divided by 8 to convert to bytes, does yield 120MB images, modulo the extra little bit for file format headers.
A note about binning - on CMOS, any
60 millions pixels, times 16 bits per pixel, divided by 8 to convert to bytes, does yield 120MB images, modulo the extra little bit for file format headers.
A note about binning - on CMOS, any
|
By
Dale Ghent
·
#87704
·
|
|
Re: Mach2 USB
Yeah, I'll give you that, there. It's not so much the fault of their design but rather the use cases they're being shoehorned into.
An inordinate amount of my abject ire towards micro, and mini-USB
Yeah, I'll give you that, there. It's not so much the fault of their design but rather the use cases they're being shoehorned into.
An inordinate amount of my abject ire towards micro, and mini-USB
|
By
Dale Ghent
·
#87703
·
|
|
Re: Eggy Stars with Polar Axis Correction
If pincushion or barrel distortion is a major factor in plate solving accuracy then I would expect the results to be OTA dependent. Some scopes have more or less distortion than others.
This could
If pincushion or barrel distortion is a major factor in plate solving accuracy then I would expect the results to be OTA dependent. Some scopes have more or less distortion than others.
This could
|
By
Nathan Myhrvold
·
#87702
·
|
|
Re: Second UPDATE video on the nPAE Ruby Turret from last week
.
Toni I had a far different experience with NPAE, Mine arrived well packed and in pristine condition. The nose piece is a little thicker than what yours was measured at. I had no scratches and no
.
Toni I had a far different experience with NPAE, Mine arrived well packed and in pristine condition. The nose piece is a little thicker than what yours was measured at. I had no scratches and no
|
By
DFisch
·
#87701
·
|
|
Re: Mach2GTO-L cross-threading cw shaft?
#Mach2GTO
VERY nice Ted!
tony
On 7/23/2022 3:05 PM, Ted Moss wrote:
VERY nice Ted!
tony
On 7/23/2022 3:05 PM, Ted Moss wrote:
|
By
Harley Davidson
·
#87700
·
|
|
Re: Mach2GTO-L cross-threading cw shaft?
#Mach2GTO
(Follow Up)- I communicated with George Whitney from Astro-Physics where upon he arrived at an immediate temporary solution and then final resolvent.
1) Within a two-day turnaround-
(Follow Up)- I communicated with George Whitney from Astro-Physics where upon he arrived at an immediate temporary solution and then final resolvent.
1) Within a two-day turnaround-
|
By
Ted Moss
·
#87699
·
|
|
Re: Mach2 USB
Raw CPU speed is one aspect in this. The other is the performance of the memory itself. Its latency (CAS latency, or CL) and clock speed are crucial to these operations where apps are copying large
Raw CPU speed is one aspect in this. The other is the performance of the memory itself. Its latency (CAS latency, or CL) and clock speed are crucial to these operations where apps are copying large
|
By
Dale Ghent
·
#87698
·
|
|
Re: Eggy Stars with Polar Axis Correction
I wonder how pinpoint does this.
Since this distortion is scope specific does it have a scope model database of some sort? And then the user has to specify which one he is using?
Or is the
I wonder how pinpoint does this.
Since this distortion is scope specific does it have a scope model database of some sort? And then the user has to specify which one he is using?
Or is the
|
By
Sébastien Doré
·
#87697
·
|
|
Re: Eggy Stars with Polar Axis Correction
One interesting thing I noticed was that the reported RA error values for each solve last night were substantially higher (about 4x higher) than in previous nights on the same set of points. In fact I
One interesting thing I noticed was that the reported RA error values for each solve last night were substantially higher (about 4x higher) than in previous nights on the same set of points. In fact I
|
By
Bill Long
·
#87696
·
|
|
Re: Eggy Stars with Polar Axis Correction
Thanks. That is certainly a reason to invest in PinPoint. I was never able to get Image Link to work for me when I was setting up my imaging software a couple of years ago. I am still using Plate
Thanks. That is certainly a reason to invest in PinPoint. I was never able to get Image Link to work for me when I was setting up my imaging software a couple of years ago. I am still using Plate
|
By
Dean Jacobsen
·
#87695
·
|