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INDI Library v1.9.2 Released (14 Sep 2021)

Bimonthly Stable INDI Library release introduces new drivers and fixes for existing ones.

HEQ5 EQMOD - reuse mount star alignment / model

  • Posts: 603
  • Thank you received: 58
Hello,
I asked this question some time ago but didn't get the right question.
Here I go again:

I have a HEQ5 permanently installed in my yard. Controlled by Stellarmate on RPI4.
Every time I start a new session after the system power down, I need to star align the mount.
I cannot find the way for the mount to keep its sky model.
Can this be done?

It's not a problem for regular astrophotography - I just slew to a target, plate solve and that's it.
But for planetary it can be a pain in the neck.
Say, I want to  image Venus. It's not dark enough for plate solving and very limited amount of time to slew around.

So. Is it possible to make the mount remember its sky model?
Thanks!


 
Max S.

RPI 4 B (4Gb) with SMate
Nikon D5500 H-a modified. Nikon D5500 stock
AT72EDII, TPO RC6
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi
SW HEQ5
RST-135
1 month 1 week ago #75122

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Yes, go to EQMod Mount --> Align --> Manage List --> Write File
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
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1 month 1 week ago #75125

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  • Thank you received: 58
Jasem,
I think I tried that without success.
I'll give this another try when the clouds go away.

Thanks!
Max S.

RPI 4 B (4Gb) with SMate
Nikon D5500 H-a modified. Nikon D5500 stock
AT72EDII, TPO RC6
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi
SW HEQ5
RST-135
1 month 1 week ago #75126

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You don't need to wait for clouds to clear. Run EQMod in simulation mode, solve a point and two. Then save the list. Then restart EQMod, and check "Number of Points" and it loaded successfully, if should display how many points i loaded up.
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
Add your observatory info
Last edit: 1 month 1 week ago by Jasem Mutlaq.
1 month 1 week ago #75127

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  • Posts: 603
  • Thank you received: 58
I'll give this a try.
I keep forgetting about simulators.

Thanks!
Max S.

RPI 4 B (4Gb) with SMate
Nikon D5500 H-a modified. Nikon D5500 stock
AT72EDII, TPO RC6
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi
SW HEQ5
RST-135
1 month 1 week ago #75129

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  • Thank you received: 58
OK. I played with this some. It worked but not quite.
It was tricky at first - "Write File" didn't do anything unless "Clear List" was pressed first.

So,
-- I "Clear List"
-- Do mount alignment with 5-8 points. After this the mount is well aligned.
-- "Write File"
-- Reboot
-- The alignment file gets read automatically, but
-- The mount is out of alignment

Is this a bug? Is this an HEQ5's "feature"?

Thanks!
Max S.

RPI 4 B (4Gb) with SMate
Nikon D5500 H-a modified. Nikon D5500 stock
AT72EDII, TPO RC6
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi
SW HEQ5
RST-135
1 month 1 week ago #75270

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You should always park the mount before turning off power and start from the same position when turning power back on, otherwise the model doesn't work. I used HEQ5 in remote observatory for a few years and usually only made a new alignment model if I had physically moved the mount and everything worked just fine.
Remote observatory running Ubuntu 21.04 x64 with ScopeDome 2M, Skywatcher EQ8, TS 8" RC, Atik 383L+, ASI178MC, ASI120MM-S, SX Lodestar X2, SX USB wheel with OAG, ZWO EAF, Gemini SnapCap, USB_DewPoint, KomaHub
1 month 6 days ago #75331

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I always park before powering off.
Something else is not right.
I'll play some more.

Thanks!
Max S.

RPI 4 B (4Gb) with SMate
Nikon D5500 H-a modified. Nikon D5500 stock
AT72EDII, TPO RC6
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi
SW HEQ5
RST-135
1 month 6 days ago #75337

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  • Thank you received: 58
I played some more but couldn't make it work.
-- I am able to save alignment points to AlignData.xml
-- They do get read after reboot
-- but after that the mount is not aligned
Maybe I am missing some option in the control panel?

Here's my AlignData.xml:
<aligndata>
    <site name="2021-09-07@22:54:01" lon="237.967" lat="37.3767">
        <point>
            <index>
6
            </index>
            <synctime>
20.926
            </synctime>
            <celestialra>
19.7613
            </celestialra>
            <celestialde>
45.2127
            </celestialde>
            <telescopera>
19.7333
            </telescopera>
            <telescopede>
44.7901
            </telescopede>
        </point>
        <point>
            <index>
0
            </index>
            <synctime>
20.8117
            </synctime>
            <celestialra>
16.4105
            </celestialra>
            <celestialde>
19.5068
            </celestialde>
            <telescopera>
16.3814
            </telescopera>
            <telescopede>
19.1062
            </telescopede>
        </point>
        <point>
            <index>
1
            </index>
            <synctime>
20.8184
            </synctime>
            <celestialra>
19.3829
            </celestialra>
            <celestialde>
17.7939
            </celestialde>
            <telescopera>
19.3548
            </telescopera>
            <telescopede>
17.3969
            </telescopede>
        </point>
        <point>
            <index>
5
            </index>
            <synctime>
20.9047
            </synctime>
            <celestialra>
23.0821
            </celestialra>
            <celestialde>
28.2021
            </celestialde>
            <telescopera>
23.0332
            </telescopera>
            <telescopede>
28.5903
            </telescopede>
        </point>
        <point>
            <index>
2
            </index>
            <synctime>
20.8331
            </synctime>
            <celestialra>
22.2759
            </celestialra>
            <celestialde>
16.5113
            </celestialde>
            <telescopera>
22.2281
            </telescopera>
            <telescopede>
16.9009
            </telescopede>
        </point>
        <point>
            <index>
3
            </index>
            <synctime>
20.8394
            </synctime>
            <celestialra>
1.15327
            </celestialra>
            <celestialde>
17.527
            </celestialde>
            <telescopera>
1.10414
            </telescopera>
            <telescopede>
17.9171
            </telescopede>
        </point>
        <point>
            <index>
4
            </index>
            <synctime>
20.8796
            </synctime>
            <celestialra>
0.178275
            </celestialra>
            <celestialde>
59.2483
            </celestialde>
            <telescopera>
0.123804
            </telescopera>
            <telescopede>
59.6581
            </telescopede>
        </point>
    </site>
</aligndata>
Max S.

RPI 4 B (4Gb) with SMate
Nikon D5500 H-a modified. Nikon D5500 stock
AT72EDII, TPO RC6
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi
SW HEQ5
RST-135
1 month 4 days ago #75404

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What do you mean the mount is "out of alignment" exactly? I just did a quick test with EQMod simulator and the points are loaded up. I can also see the alignment affecting the GOTO. If you go to Align tab, you can toggle between "No Alignment" to "Nearest"..etc for example.
Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
Add your observatory info
1 month 4 days ago #75406

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  • Posts: 603
  • Thank you received: 58
Jasem,
Like I said - I align the mount, save the points. They do get loaded on reboot but my first slew/goto is always about 3000" off.
Same if there were no alignments loaded.

Looks like it's supposed to work but it doesn't for me.
Maybe it's my mount... Backlash, play and such.

Thanks!
Max S.

RPI 4 B (4Gb) with SMate
Nikon D5500 H-a modified. Nikon D5500 stock
AT72EDII, TPO RC6
ASI2600MC Pro
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
SW AZ-GTi
SW HEQ5
RST-135
1 month 4 days ago #75409

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