- large alignment error with polemaster & mach2
Re: large alignment error with polemaster & mach2
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agree- PM + SC works great; simple, fast and accurate as long as you are within 5 degrees of Polaris so the internal plate solver can work
On Sat, Aug 1, 2020 at 2:52 PM Brian Valente <bvalente@...
>>>I will give a chance to the pole master+SC software.
in my experience it works fantastically well
one note: make sure you enter the setup information correctly in Sharpcap. It's not clear but you need to ensure you enter your location/date/time and also your image scale. it doesn't really warn you about that
I will give a chance to the pole master+SC software.
If it doesn’t work , I will probably go for the Rapas.
The Rapas will require you to drift align the mount for the first time. Then you adjust the Rapas precisely using the 3 push-pull screws. From then on you can get good polar alignment using the pole scope without having to do any other alignment.
From: Andrea Lucchetti <andlucchett@...
Sent: Sat, Aug 1, 2020 7:51 am
Subject: [ap-gto] large alignment error with polemaster & mach2
I need to polar align my Mach 2 very quickly to save time on field.
I thought Polemaster would have been a good choice but I cant get a good alignment with it (I am ways off)
The procedure goes very well, till the end, including the precise alignment step, but I have drift in my images.
running the Polemaster twice results in a small change.
I am not using the refraction calculation , as I leave at 42 deg latitude: can this be one of the reason?
my aim is to shoot 10 min subs unguided (@790mm focal and 1,6 arcsec/pixel resolution).
I still don't have my OTA ready so it is difficult for me to check with the drift method for the time being ( I can borrow a dslr and C8)
Would the RAPAS be a better solution for my needs?
I understand it can be mounted on the MACH2 using a dovetail, with repeatable accuracy.
Is the accuracy enough for imaging and how it compares to Polemaster?
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