On Sat, Aug 8, 2020 at 02:01 PM, Doug Doonan wrote:
This sounds really neat and it is like what I want to do. Some questions:
Ursa Major is the big dipper, and it is big in the sky. What part of the BD do you use to align with what part of the reticule? The reticule has a bucket shaped arrangement of little circles opposite where Polaris is, at least in my scope. Is that what you align with the bucket in the BD?
Casseopea (sp) is on the other side of of Polaris from the BD. I don't see how you can use one OR the other to get a Polar alignment. If you use the BD the NCP will be to the left of Polaris. If you use CASS the NCP will be on the right side. Only one can be correct, I think.
Great method if I could understand the details.
From: brian skinner <brianjimskinner@...>
Sent: Sat, Aug 8, 2020 9:21 am
Subject: Re: [ESPMC-Eight] Explore Scientific EXOS-2 PMC-Eight GOTO Mount illuminated polar alignment + 90 degree polar alignment
Hi Doug, my modus operandi doesn't worry about putting stars in the reticle circles. I eyeball either Ursa Major OR CASS. (either will do). I then rotate the reticle of the PS carefully until the orientation of the real constellation and the reticule constellation are the same. I then physically move the mount and lat adjuster until Polaris appears in the reticule. Additional careful mount adjustment is done until Polaris is positioned in the little gap along the line marked Polaris. I then power up my mount and away I go.
Please note I am using the iEXOS100 PS, yours maybe different.
Hope that helps, Brian
Canon 1300d dslr
ES Polar scope
Sequator image stacker
PIXR image editor
HomeBru 6 inch Reflector f 6.6
HomeBru 85 mm Refractor f 5.6
PMC-8, EXOS 2
Long retired EE.
I don't think the iEXOS100 has the same polar scope reticule as the EXOS2. The "bucket shaped arrangement of little circles" I think is for aligning with the south celestial pole.
I use the android app PolarAlignerPro and select the reticule for Meade LXD55 which seems to match my EXOS2 reticule.
Also, see this thread on CloudyNights:https://www.cloudynights.com/topic/614983-polarscope-alignment-calibration-help-needed/
Mount: EXPLORE SCIENTIFIC EXOS2-GT EQUATORIAL MOUNT WITH PMC-EIGHT GOTO SYSTEM
Scope: ED115 FPL53 115MM F/5.5 AIR-SPACED TRIPLET ED APO REFRACTOR IN CARBON FIBER