Two layers of Cuprinol later (left over from my wife’s fence painting project earlier in the year), the new mobile wooden HEQ5/EQ6 will be ready for vanishing with yacht varnish once it dries – and with high humidity levels at present and low temperatures I think it might take a few days before it properly dries out from the water based Cuprinol. That’s the price you pay for using left over stuff!
The next step for my new mobile base for my HEQ5/EQ6 mount was to fill any holes in plywood spaces between strips wood left when we put it together and sand it down – photo below from part way through thus process.
Now that I am doing astrophotography, it is important that I create stable, mobile base to allow me to roll the mount in and out of the log cabin. The more that can remain set-up between sessions, the easier it will be to image – especially important in the UK as weather liable to deteriorate again quickly.
Angella & Alan came around today and helped me build a fantastic base – thanks Angella & Alan!
Paul has come up with this ingenious solution to the problem of a cricked neck when looking through the polarscope on these popular Sky Watcher mounts.
The photos below show how the 90 degree viewer and fitting are assembled, noting the nut used to clamp it together.
Paul has very kindly made one of these for me using a second hand Nikon DR3 right angle camera attachment off ebay (approx. £6). He has made the hole in the plastic fitting a tight fit on the short thread of the DR3 such that no nut is needed. He has learnt how to carefully enlage the bore of the plastic fitting so it is a snug fit in the polarscope eyepiece…a bit tedious because it’s trial and error and must be done very carefully to ensure that the bore is not accidently made too large. Patience needed and lots of cups ot tea! The finished product is a tight fit and needs screwing onto the thread of the viewer. It should be a snug push fit onto the polarscope eyepiece. Paul used a 32mm Waste Compression End Plug costing £1.50 from “Discount DIY Store”, Swadlincote High Street, Swadlincote, Derbyshire, UK.
In use: Fit collar to viewer first, then push it onto polarscope eyepiece as far as possible – see photo. Try different angular positions if its too tight to go on. The collar should go over the eyepiece and over the polarscope tube as well.
To focus polarscope, Paul has found that he needs to unscrew eyepiece about 5mm so he fitted an 0-ring onto the thread for eyepiece to clamp against and keep eyepiece tight in the focused position.