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This is my first post on this forum (although I've lurked in the shadows for a while). So I thought I'd share some of the modifications that I've had done to the new Mesu MkII I received last week in case someone can benefit. Sadly I haven't tried it imaging yet only balanced, slewed it around and read the Sitech documentation to make sure everything is functioning. The day it arrived we plunged into sub-zero temps and snow 😫.
The mods include an extended wedge for some limited imaging past the meridian, and an angled counterweight bar for clearance in the tight space. Some have commented in other posts on the long Mesu CW bar but its necessary to balance the weight of the head (unloaded) and to accommodate counterweights for the significant payload. Once tested I'll be loading this bad-boy with a number of different focal length scopes as changing equipment at 25C below is not fun. I lasted one winter doing this and the automated ESO (Exceedingly Small Observatory) was born.
Has anybody with this mount installed homing switches? The Sitech1 controller has an aux port for this purpose. For me this would be for integration into the ROR control system to prevent an expensive mistake. Eventually the goal will be to monitor for inclement weather and shut down the system safely or automate parking and calibration frames at the end of a normal session. This is a work in progress as I only completed the ROR roof upgrades this summer.
PS That flats panel needs moving. It was ok with the old mount but every inch counts now!
For sale is my beloved but now superfluous to requirements HEQ5 Pro for £700
It's in a used condition as you would imagine. I've had it for about 4 years and found great success with this mount. Ideal for those beginning astrophotography and also good for visual users.
I'm calling it "deluxe" due to the upgrades I've had done.
- It's belt modified
- It's had brand new bearings and grease
- The backlash has been expertly setup
- It has the latest polar scope
- The power port has been replaced with an aviation style port which is a lot more secure
It'll come with the hand controller and at least 1 counterweight (if I can find the second it'll come with both). The polar scope cover has been lost. The counterweight is rusty as always. There is some marring on the counterweight bar housing as shown in the photos.
It also will come with the modified power cable required also.
Note: the power LED sometimes doesn't illuminate but the mount is still powered (please see the photo with the hand controller).
Collection or local delivery within Northampton
Vixen Polarie Star Tracker with Vixen Quick Polaris Locator Compass in mint condition - For Sale.
This mint condition Polarie Star Tracker and Vixen Polaris Locator Compass have only been used during the course of a review that I carried out for Vixen UK and will be supplied in their original boxes with manuals.
This tracker is the ultimate in portable camera tracking mounts being lightweight yet manufactured to Vixen’s usual exemplary high standard and the additional Vixen Polaris Locator Compass makes polar alignment for wide field imaging quick and simple.
The new price for the two items would be £399.00
For sale at £195.00 delivered. Payment by bank transfer - WILL NOT SELL OUTSIDE UK.
Polarie Star Tracker
Vixen Quick Polaris Locator Compass
Last week I discovered a reasonably wobble on the RA axis on my HEQ5 which ended up causing lots of double stars on my subs (i am guessing because the mount kept wobbling between the two positions.) So I did the worm gear adjustment and the wobble seems to have disappeared. I did a full slew rotation check and couldn't tell any binding/grinding (I had binding at 1st attempt but was resolved after further adjustments).
Thanks to the clear skies last few nights, I had it running throughout the night 3 times now. My overall guiding is much better than before, averaging between 0.6 and 0.8 Total error. However, when the mount gets closer to the home position (usually after 2-3am), I seem to start having tracking issues. I have attached screenshots to show examples; sometimes it's trailing, sometimes it's double stars, and sometimes it makes a u-turn to track back to the original position.
PHD log files from another night are here: https://openphdguiding.org/logs/dl/PHD2_logs_tych.zip
Is this a balance issue that becomes apparent when the mount is more vertical? I'm relatively new to using this mount, so most of my previous sessions have been closer to the meridian. Or is my worm gear tightened just a bit too much and causing issues? I can't really hear anything wrong when slewing at high speed.
Only other thing i can think of is, I sometimes get error messages on PHD but pulse command being ineffective, but these happen at other times as well without causing any issues.
It's losing me 7-8 frames over the span of 2.5 hours, so it would be nice to get it resolved if anyone has any ideas?