BranocsSky

On 03/05/2024 at 17:07, LondonNeil said:

Update @BranocsSky it definitely pulls off the st120. I just did it as I wanted to see how heavy it is.   I read on CN to wiggle/tug it back and forth and sure enough I saw a little movement and persevered. Once off 4 or 5mm it got easier.  It's just a snug fit with some felt in there to  hold it. 

Once off I noticed how dusty the primary was so unscrewed the retaining ring (it has a couple of small holes that a large paper clip or similar will fit in and allow you to turn the ring).  Beneath that is a plastic spacer which drops out,  then a rubber seal which lifts out, then the 2 lens elements will drop out along with a paper thin plastic (?) Spacer between them.   It was simple to give everything a wipe with a soft/glasses cloth,  blow a bit of dust from the tube and then replace it all.......I think I got the lenses back the right way around....

If I can't get focus next session I'll know why!

BTW the dew shield weighed in at 460g, so I'm thinking of replacing it with a flexible plastic removable astrozap like item.   It would save 300g (my mak127 astrozap which is larger weighs 170g), and make storage easier!  I need to check I can still balance the scope though..... might need to use a longer dovetail extended rearward past the last tube ring.

LondonNeil this is good news, I will give the tug and twist method a go, and see if it moves

Hi all.

I want to know if anyone has ever tried to remove the Dew shield on a Skywatcher Startravel 150/750 refractor. I thought that they were screwed on but when I tried to remove mine so that I could clean the front lens it would not move. Not wanting to damage anything I thought I would ask if anyone has been successful removing one.

Thank you for supplying the data, I am still learning about processing, but I am happy with the colours. I used Affinity Photo for the processing.