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By Michael Hogan
I have decided to sell my Cem-120 mount as i got a second hand AP 1100 GTO from my friend who got a new AP 1600 with encoders
its just under a year old bought from Altair Astro so still under two year warranty is in mint cont i couldn't miss the opportunity to get
AP 1100 GTO and let it go still waiting for pier plate for mount.
So theirs no point in keeping two large mounts after i got my dream final mount buyer will pay shipping price is 2150 pounds.
Altair Astro price without Ipolar Camera is 3250 pounds without Ipolar Camera which is 200 pounds total 3450 pounds
I have recently bought an iOptron GEM45 (from FLO) and I am a bit mystified by the Zero Position. The hand control gives you the options of "Goto Zero Position" and also "Search Zero Position", but they appear to do the same thing!
Does the mount have sensors like the Home position of a Paramount, which sets the axes to an exact hardware position, or is it something else?
I guess this is the same for other iOptron EQ mounts so maybe a skilled user can enligten me.
By Space Oddities
I decided to sell my iOptron iPolar, that is currently mounted on my SkyGuider Pro. I only used it a couple times so it's like new. Since I'm now using another mount, and will probably sell my SkyGuider eventually, I no longer need the iPolar.
Please note that it isn't compatible with other mounts, mainly because the USB slot is on the back of the camera, not on its side.
Price is £150, including shipping from Munich, Germany. Payment via Paypal or bank transfer.
Please let me know if you have any question or if you need pictures!
The postman was kind to me today and dropped off a William Optics Zenithstar 61 and Flat61A flattener and the gods smiled on me with clear skies for 30 minutes. It would be a shame not to christen the new toys
I only managed 10 lights so I didn't even consider darks or flats. The 10 lights from the Canon 5D MkIV, shot at iso 1600 x 60 seconds, were stacked and aligned in PS, median filtered for some noise reduction and then a few layer/curves tweaks to pull out some basic detail so I could look at the star profiles and and any vignetting.
Overall impression is extremely good build quality and the focusing through the mask is ok on very bright stars but quite a challenge on lesser star magnitudes. Very little vignetting through the imaging train so the image circle cover the full frame sensor and it will be simple to either remove the gradients in PS or use flats and sharp stars corner to corner with no obvious colour aberrations.
I do need to check where the weird smudges are in the imaging train because they weren't on the camera sensor yesterday, hopefully I'll find them pretty quickly because they are nasty!
Screenshots are also included of APT focusing, Stellarium for the imaging area after plate solving in APT and then PHD2 for the guiding with the ZWO ASI120mm-mini camera on a ZWO 30mm f/4 scope (I've no idea if the guiding is good or bad but the polar alignment was achieved with the iPolar camera in the SkyGuider Pro mount
I think at some point I'll add an 2" IDAS D2 filter into the imaging train and see if I can counter some local light pollution we have around here.