|
Re: Comet Tracking
I tried that last night and it worked relatively well.
As always we had clouds moving in and we have the moon in waning gibbous, so I did not got my best go to (the
I tried that last night and it worked relatively well.
As always we had clouds moving in and we have the moon in waning gibbous, so I did not got my best go to (the
|
By
Alvaro Cruz-Cabrera
·
#31346
·
|
|
Re: renishaw scope encoders to compensate backlash
Sorry Dan, I'm afraid you're wrong.
I googled a lot and looked on renishaws homepage, and I can now answer my first question:
High-resolution encoders have initially an analog sine- / cosine-wave
Sorry Dan, I'm afraid you're wrong.
I googled a lot and looked on renishaws homepage, and I can now answer my first question:
High-resolution encoders have initially an analog sine- / cosine-wave
|
By
Ralf
·
#31345
·
|
|
Re: planets
Hi Paul,
In order to goto a planet, your controller must be accurate (an OffsetInit) pointed at the sky. Whether day time or night time, you can use SkyView in SiTech to goto a planet. You have to
Hi Paul,
In order to goto a planet, your controller must be accurate (an OffsetInit) pointed at the sky. Whether day time or night time, you can use SkyView in SiTech to goto a planet. You have to
|
By
Don W
·
#31344
·
|
|
Re: renishaw scope encoders to compensate backlash
Hi Ralf,
There are two main types of encoders used with SiTech controllers. They are A-B (quadrature) encoders common for the Servo I and Servo II controllers. These are NOT sign wave, they ARE
Hi Ralf,
There are two main types of encoders used with SiTech controllers. They are A-B (quadrature) encoders common for the Servo I and Servo II controllers. These are NOT sign wave, they ARE
|
By
Don W
·
#31343
·
|
|
Re: renishaw scope encoders to compensate backlash
Next question: You recommend Renishaw 26 bit absolute encoders in Cascade Mode. This will recognize and compensate backlash? It sounds so:
"Cascade Mode:
You can ONLY use this mode if you have High
Next question: You recommend Renishaw 26 bit absolute encoders in Cascade Mode. This will recognize and compensate backlash? It sounds so:
"Cascade Mode:
You can ONLY use this mode if you have High
|
By
Ralf
·
#31342
·
|
|
Re: planets
thanks Alvaro - what's the process for a goto to a planet?
best wishes
Paul
thanks Alvaro - what's the process for a goto to a planet?
best wishes
Paul
|
By
paul K
·
#31341
·
|
|
Re: renishaw scope encoders to compensate backlash
Hi Don,
the first question is how the interpolation is done. I don't know exactly, but I thought that the encoder produces two analog sine-wave 90°-phase-shifted signals. This analog signal can then
Hi Don,
the first question is how the interpolation is done. I don't know exactly, but I thought that the encoder produces two analog sine-wave 90°-phase-shifted signals. This analog signal can then
|
By
Ralf
·
#31340
·
|
|
Re: Comet Tracking
Great, thanks
On 4/4/2020 6:30 PM, Don W wrote:
Great, thanks
On 4/4/2020 6:30 PM, Don W wrote:
|
By
Alvaro Cruz-Cabrera
·
#31339
·
|
|
Re: Comet Tracking
SiTech uses the Soft00Cmt.txt data. You can download it directly in SkyView by clicking on "Orbits" menu. That data will be downloaded into the SiTech database folder. Then go to the SkyView
SiTech uses the Soft00Cmt.txt data. You can download it directly in SkyView by clicking on "Orbits" menu. That data will be downloaded into the SiTech database folder. Then go to the SkyView
|
By
Don W
·
#31338
·
|
|
Re: Comet Tracking
BTW: I have a question. Does Skyview uses the MPC format to read the comet ephemerids?
Thanks,
Alvaro
On 4/4/2020 3:30 PM, Alvaro
BTW: I have a question. Does Skyview uses the MPC format to read the comet ephemerids?
Thanks,
Alvaro
On 4/4/2020 3:30 PM, Alvaro
|
By
Alvaro Cruz-Cabrera
·
#31337
·
|
|
Re: planets
yes, you can, I have done it with Jupiter and Saturn.
I had even done a temporary alignment with venus to get me going (i don't recommend it all the time), because there
yes, you can, I have done it with Jupiter and Saturn.
I had even done a temporary alignment with venus to get me going (i don't recommend it all the time), because there
|
By
Alvaro Cruz-Cabrera
·
#31336
·
|
|
planets
Hi Don & Dan,
Is it possible to goto a planet using sitech? I guess if I knew its position in the sky that would be the obvious way to do it, just wondered if there's any other way via a catalog
Hi Don & Dan,
Is it possible to goto a planet using sitech? I guess if I knew its position in the sky that would be the obvious way to do it, just wondered if there's any other way via a catalog
|
By
paul K
·
#31335
·
|
|
Re: Comet Tracking
Yes, I am going to try that. Now I am trying to figure out how to download the file from the web.
The only weird thing is that the data files in the SiTech\SitechExe\Database\ are
Yes, I am going to try that. Now I am trying to figure out how to download the file from the web.
The only weird thing is that the data files in the SiTech\SitechExe\Database\ are
|
By
Alvaro Cruz-Cabrera
·
#31334
·
|
|
Re: Comet Tracking
Thank you for the info, and that sounds reasonable.
I am going to try download the comet database. and see if I can use Skyview.
I am bit worry that I am using old data, but
Thank you for the info, and that sounds reasonable.
I am going to try download the comet database. and see if I can use Skyview.
I am bit worry that I am using old data, but
|
By
Alvaro Cruz-Cabrera
·
#31333
·
|
|
Re: Comet Tracking
When using the SKYX you also need to push the button Set Track Rates on the Telescope tab to get the correct tracking rate for a comet or an asteroid. I'd stick with the SkyView technique -
When using the SKYX you also need to push the button Set Track Rates on the Telescope tab to get the correct tracking rate for a comet or an asteroid. I'd stick with the SkyView technique -
|
By
Ross Salinger <rgsalinger@...>
·
#31332
·
|
|
Re: renishaw scope encoders to compensate backlash
On Sat, Apr 4, 2020 at 11:21 AM, @radinkel wrote:
RESM20 100mm dia + VIONIC 25nm
Hi Ralf,
Well, 15744 lines gives a resolution of 82.3 arc-sec. If your backlash is less than 82 arc-sec I don't know
On Sat, Apr 4, 2020 at 11:21 AM, @radinkel wrote:
RESM20 100mm dia + VIONIC 25nm
Hi Ralf,
Well, 15744 lines gives a resolution of 82.3 arc-sec. If your backlash is less than 82 arc-sec I don't know
|
By
Don W
·
#31331
·
|
|
Re: Comet Tracking
Hi Alvaro,
The easy way in SiTech is to download the comet database into SkyView and then tell Skyview to go to the comet. The Skyview dialog will offer to set the tracking rates for the comet (each
Hi Alvaro,
The easy way in SiTech is to download the comet database into SkyView and then tell Skyview to go to the comet. The Skyview dialog will offer to set the tracking rates for the comet (each
|
By
Don W
·
#31330
·
|
|
Re: Update from 0.90R to 0.95A
H Ralf,
Well, I warned you that Parking and Unparking was changed, and needed to be reset. As for the meridian flip settings, in SiTech you can set them to any setting you want. However NOTE:
H Ralf,
Well, I warned you that Parking and Unparking was changed, and needed to be reset. As for the meridian flip settings, in SiTech you can set them to any setting you want. However NOTE:
|
By
Don W
·
#31329
·
|
|
Re: Update from 0.90R to 0.95A
Shocking, first slew after update and nearly a total crash. Telescope lost complety the orientation after unpark. After one offset init everything seems to work again. Set a new park position and
Shocking, first slew after update and nearly a total crash. Telescope lost complety the orientation after unpark. After one offset init everything seems to work again. Set a new park position and
|
By
Ralf
·
#31328
·
|
|
Re: Update from 0.90R to 0.95A
Hi Don,
updated now to .95A. Saved all my old files and made screenshots from the settings ;)
Can you please have a look on the meridianflip-thing...
MF on tracking is made from SGP
Not sure I need
Hi Don,
updated now to .95A. Saved all my old files and made screenshots from the settings ;)
Can you please have a look on the meridianflip-thing...
MF on tracking is made from SGP
Not sure I need
|
By
Ralf
·
#31327
·
|