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Finder guider phd settings

PostPosted: Sat Aug 24, 2019 6:50 pm
by craig a
I’ve decided to try a finder guider to cut some weight out the rig, I believe these can guide up to 1500mm and as my scope is 1000mm fl it should be able to guide it in theory! I was using an st80 and just used default phd settings and they worked just fine a used a very high dither and settle at 0.5, so what settings do people recommend with a finder guider? I just need something to start off with as a baseline, has anyone used a finder guider on a 1000mm scope?

Re: Finder guider phd settings

PostPosted: Mon Aug 26, 2019 1:42 pm
by smerral
Hi Craig,

I'm using mine with my C8 at f.5 (1000mmm) and I'll be giving it a go tonight (weather gods permitting) at 1600mm. So far it's worked just fine (my latest NGC7731 image I just posted was taken using this set up). And I don't bother tampering much with the PHD default settings tbh. I just use the PHD wizard for calculating the calibration step by inputting the guide scopes focal length (in my case 180mm).

Brian

Re: Finder guider phd settings

PostPosted: Mon Aug 26, 2019 2:32 pm
by craig a
smerral wrote:Hi Craig,

I'm using mine with my C8 at f.5 (1000mmm) and I'll be giving it a go tonight (weather gods permitting) at 1600mm. So far it's worked just fine (my latest NGC7731 image I just posted was taken using this set up). And I don't bother tampering much with the PHD default settings tbh. I just use the PHD wizard for calculating the calibration step by inputting the guide scopes focal length (in my case 180mm).

Brian

Hello Brian, my first attempt 2 nights ago resulted in disaster I had cables dragging and polar alignment was out so sorted them 2 things yesterday afternoon, tried again last night on M39 inputted the fl of guide scope and used the suggested cal step and bingo round stars in 60sec subs and 120sec subs so it does work I also changed the min mo to 0.05 it behaved flawlessly so happy I can ditch the piggybacked st80 and loose that extra weight plus height of the whole setup

Re: Finder guider phd settings

PostPosted: Mon Aug 26, 2019 3:46 pm
by smerral
Hello Brian, my first attempt 2 nights ago resulted in disaster I had cables dragging and polar alignment was out so sorted them 2 things yesterday afternoon, tried again last night on M39 inputted the fl of guide scope and used the suggested cal step and bingo round stars in 60sec subs and 120sec subs so it does work I also changed the min mo to 0.05 it behaved flawlessly so happy I can ditch the piggybacked st80 and loose that extra weight plus height of the whole setup


Brill! :happydance2: I'm glad it's working out! :thumbsup:

Re: Finder guider phd settings

PostPosted: Mon Aug 26, 2019 7:22 pm
by AstroChris
smerral wrote:Hi Craig,

I'm using mine with my C8 at f.5 (1000mmm) and I'll be giving it a go tonight (weather gods permitting) at 1600mm. So far it's worked just fine (my latest NGC7731 image I just posted was taken using this set up). And I don't bother tampering much with the PHD default settings tbh. I just use the PHD wizard for calculating the calibration step by inputting the guide scopes focal length (in my case 180mm).

Brian
Wow you can do 1600mm with a Guidescope with 180mm? Amazing! I thought that one would need a longer guideFL for that main scope!

Good to know!
Chris

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