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INDI Library v1.9.9 Released (30 Nov 2022)

Bi-monthly INDI Library released with new drivers and bug fixes.

SEP multistar guiding

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I've switched to <strong>SEP multistar</strong> for the guiding and using the default settings only, it seems to be working nicely. I'm sure I can do better once I start tweaking it...
HEQ5 pro polar aligned using the Ekos PA assistant
QHY5L-II-M via a ZWO OAG (I was expected better stars to be honest, but it will do)

Kstars Mac osx
Odroid C4 / WO Redcat51 / CEM25p / ZWO533MC / QHY5L-II-M (OAG)
Last edit: 2 years 2 months ago by Gonzothegreat. Reason: spelling...
2 years 2 months ago #59880
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Replied by Gonzothegreat on topic SEP multistar guiding

I dropped the Exposure time to 0.5s for a test and wow the guiding looks better.

Kstars Mac osx
Odroid C4 / WO Redcat51 / CEM25p / ZWO533MC / QHY5L-II-M (OAG)
2 years 2 months ago #60016
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Replied by Jim on topic SEP multistar guiding

That does look good. One thing I have been wondering, but have not had the time to test, is how much focus matters to guiding. I use a ZWO OAG, like you, but do not have the focus dialed in as good as yours is. I wonder if that is hurting me at all.
12" pier with HDX110 using EQMod
ASI 1600 mono/color mains with ASI290MM in off-axis
ASI filter wheel
Moonlite focusers for the sharpening
AT115EDT w/.8x for the light
Fedora Linux, 100% INDI
2 years 2 months ago #60017

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Replied by Gonzothegreat on topic SEP multistar guiding

By all mean I am not an OAG expert, but from what I understand:
the filter wheel/drawer must be after the OAG and not before (CCD + filter + OAG + telescope)
you need to get focus on your main camera first then you focus the OAG guide cam
if the main backfocus is 55mm then OAG to guide cam ccd must also be 55mm
Kstars Mac osx
Odroid C4 / WO Redcat51 / CEM25p / ZWO533MC / QHY5L-II-M (OAG)
2 years 2 months ago #60018

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Replied by Jim on topic SEP multistar guiding

Thank you for the hints, it is set up correctly to come to a good focus, I just do not have a good focus on on the tracking camera yet. It has been "good enough" focus, I guess you could say. Just wondering if that hurts tracking.
12" pier with HDX110 using EQMod
ASI 1600 mono/color mains with ASI290MM in off-axis
ASI filter wheel
Moonlite focusers for the sharpening
AT115EDT w/.8x for the light
Fedora Linux, 100% INDI
2 years 2 months ago #60027

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Replied by Dean on topic SEP multistar guiding

what is the weight load on your mount ? I am payload overloaded and can only get that rms response
from the new SEP guide algorithm under optimal sky conditions and certain targets regardless of camera
exposure time.
HEQ5 (belt mod)
ASI533MC Pro, ASI385MC-Cool, ASI120MM-mini, ASI178MM
Meade LX65 6" ACF SCT (OTA), William Optics GT71, WO PFlatA6III, ZWO IR/UV cut
MoonLite CS 2" SCT, MoonLite High Res Stepper Motor V3, ZWO EAF, ZWO OAG, Hercules OAG
Raspberry Pi 3B+, Pi4B+ 8Gb, Pegasus PPBA
Stellarmate OS
2 years 2 months ago #60030

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Replied by Gonzothegreat on topic SEP multistar guiding

Without checking every thing, no more than 3KG or 3.5KG I would say.
Kstars Mac osx
Odroid C4 / WO Redcat51 / CEM25p / ZWO533MC / QHY5L-II-M (OAG)
2 years 2 months ago #60037

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Replied by Hy Murveit on topic SEP multistar guiding

Dean,
FWIW, I rarely get guiding working that well either (I use an Atlas Pro, which I believe is pretty similar to the HEQ5 pro, though not sure).
Some of it depends on the seeing and the sky position of your target.
I find, though, that using the GPG RA guide algorithm helps me.
Are you using that?
BTW, GPG RA guiding resets every time you slew, and it can take 15 minutes after a reset to get to its optimum performance.
AP1100 & Orion Atlas Pro, WO/ZS105 w/Moonlight V2 focus, GSO RC10 w/RSF focus
ZWO ASI1600, Astronomik Filters, ST80, QHY 5L-IIm.
KStars/Ekos/Indi on NUC10 & RPi4 w/SSD -- Ubuntu
Projects: Greedy Scheduler, Terrain, Polar Align, Analyze, Linear Focuser, SEP MultiStar & GPG Guide, FITS autostretch.
2 years 2 months ago #60038

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Replied by AstroNerd on topic SEP multistar guiding

Stellarmate OS on Raspberry pi4b
Skywatcher EQ8 pro, on steel pier
Takahashi FSQ85, FS60cb & Meade 8” SCT (de-forked)
Starlight Xpress SXVR H18, SXVR M25c, Lodestar x2 Guide Camera
Pegasus Ultimate Hub V2 for all USB & Power
Pegasus focus motors on all scopes
Last edit: 2 years 2 months ago by AstroNerd.
2 years 2 months ago #60039

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Replied by Magnus on topic SEP multistar guiding


Thats interesting! I will try that tonight.

+1 for sep multistar. For me even calibtation is quicker and succeds every time + better guiding :)
Proud owner of Observatory 17b - A remote Linux observatory.
Website: Observatory 17b
Build thread @ SGL: Starting summers observatory project
Last edit: 2 years 2 months ago by AstroNerd.
2 years 2 months ago #60040

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Replied by Gonzothegreat on topic SEP multistar guiding

If this evening I get another nice one, I will be testing the guiding only, with difference exposure time.
Kstars Mac osx
Odroid C4 / WO Redcat51 / CEM25p / ZWO533MC / QHY5L-II-M (OAG)
2 years 2 months ago #60049

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Replied by Dean on topic SEP multistar guiding

Hy,

I have had good guiding, around 0.5", albeit under dark rural skies while on vacay, so its frustrating
not to get close to that. I use the GPG RA with major period set to 638 s (found on another post somwehere)
and tried without noticeable improvement by toggling estimate period. I will try a longer settle in to reach
optimum.

GTG,my SCT rig is much heavier but I hope to improve guiding after removing the guidescope and
replacing with a ZWO OAG that is coming in today. I would have thought with such a light load your guiding
would be much better. A WO GT71 is also coming today and I am keen to see how guiding that scope
on the HEQ5 works out.
HEQ5 (belt mod)
ASI533MC Pro, ASI385MC-Cool, ASI120MM-mini, ASI178MM
Meade LX65 6" ACF SCT (OTA), William Optics GT71, WO PFlatA6III, ZWO IR/UV cut
MoonLite CS 2" SCT, MoonLite High Res Stepper Motor V3, ZWO EAF, ZWO OAG, Hercules OAG
Raspberry Pi 3B+, Pi4B+ 8Gb, Pegasus PPBA
Stellarmate OS
2 years 2 months ago #60054

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