Hi all
I am writing here because I think I may find the answer.
I own 2 ESATTO 4 inch primaluceLab and both do not convince me about the reliability of the backlash.
In a few words: I start with having the focus precise at 500000 counts, as time passes (1 month), the focus precise reaches 270000 counts and I am sure that next month I will have the focus at almost 0 counts.
The focus curve is good, but I think that with each focus curve there is a variable micro slippage that reduces the counts read more and more.
I tried to use them without having set backlash values and also setting a backlash of 10000 counts but I still always have this reduction.
I tried to tell primaluceLab several times but they say that it is a "normal" thing, to me it does not seem normal at all.
so, any ideas? anyone else having the same problem? should i set an even higher backlash?
anyway for info the load on my ESATTO is light compared to its capacity
RIccardo
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Ciao.
Non capisco il problema che stai descrivendo, comunque io ho un Esatto 4 su Takahashi FSQ 106ED e uso SGP per le riprese. Non ho nessun problema. Ogni tanto (4-6 mesi) faccio la calibrazione del fok e rifaccio le curve. Lo step size per una V curve a 7 punti con il mio setup è di 5447 micropassi. Lo calcoli facilmente, ed eventualmente ci sono un sacco di video su YT che ti aiutano a capire come fare.
Un saluto
F.
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il problema principale è questo:
prima cosa faccio la mia calibrazione del focuser.
seconda cosa metto a fuoco sulle stelle e mi trova un punto di fuoco diciamo a 550000 counts.
COME è possibile che dopo 2 mesi il punto di fuoco è a 200000 counts? non ha senso!
io mi aspetto che il punto di fuoco vari di +- x counts dal valore medio, ma se il punto di fuoco continua ad abbassarsi c'è qualcosa che non va
quando avevo il pegasus esterno su focheggiatore, il punto di fuoco era sempre lo stesso e variava di +- x come giusto che sia
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Malheureusement, le problème est en cours de détail ; le produit en question est un Esatto 4 sur un Takahashi FSQ 106ED, et la réprese se fait en utilisant SGP. Je n'ai aucun problème. Il faut beaucoup de temps (quatre à six mois) pour calibrer le fok et changer la courbe. En utilisant 5447 micropassi, ma configuration donne un pas pour une courbe en V à sept points. Vous pouvez trouver un sac de vidéos sur YouTube qui vous permettra éventuellement de simplifier le calcul. io gamesMes sincères salutations
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@John Dziuba , i saw that also you have esatto 4 inch with SGP. So do you have a problem like mine? can i see your configuration on focuser in SGP? is there a backlash compensation? Riccardo
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Riccardo Civati:
Hi all
I am writing here because I think I may find the answer.
I own 2 ESATTO 4 inch primaluceLab and both do not convince me about the reliability of the backlash.
In a few words: I start with having the focus precise at 500000 counts, as time passes (1 month), the focus precise reaches 270000 counts and I am sure that next month I will have the focus at almost 0 counts.
The focus curve is good, but I think that with each focus curve there is a variable micro slippage that reduces the counts read more and more.
I tried to use them without having set backlash values and also setting a backlash of 10000 counts but I still always have this reduction.
I tried to tell primaluceLab several times but they say that it is a "normal" thing, to me it does not seem normal at all.
so, any ideas? anyone else having the same problem? should i set an even higher backlash?
anyway for info the load on my ESATTO is light compared to its capacity
RIccardo Hi Riccardo, I have an Esatto 2" AND an Esatto 2" LP and never experienced anything such as you describe. Mine are set to 0 backlash. No issues. BTW, I don't see how backlash would have anything to do with your issue.
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ciao Francesco la mia curva di fuoco però mostra un andamento come se ci fosse backlash. una cosa come questa  |
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