rogueElement

Brilliant, got it, found it, thank you all. Thanks too for the correct nomenclature - why did the telescope not come with a basic diagram indicating the component parts - I appreciate there aren't many but it helps to call them by the right name eg draw tube.

It was my fault entirely, I'd removed the eyepiece fitting in error, not appreciating that it had a cap on the end; I thought it was all one piece and therefore needed removing in order to insert eyepieces.

great, I'm all set, it's been a very clear sunny day today, hoping for clear skies tonight.

Thanks again!

37 minutes ago, Ruud said:

I think the thumb screw (or the ring that it is attached to) that fixes the eyepiece in place blocks it when you try to insert the eyepiece. Which is why the eyepiece doesn't sink in deep enough and falls out too.

 

 

 

There isn't one??

Anyway, here are the photo's:

1) (8219) eyepiece inserted into focuser

2) (8220) try to focus and out it pops

3) (8221) adaptor supplied with barlow lens inserted into focuser and 40mm eyepiece into that..problem solved...unless there was something else I could have done?

4 minutes ago, John said:

If you try it on the stars you might find that the problem goes away. The eyepiece will reach focus further inwards on a target that is effectively at infinity rather than a much closer target. The 40mm may well not reach focus at just the same place as your other eyepieces though, it's worth being aware of that.

The usual criticism of 40mm eyepieces is that they cant show any more sky than a 32mm in the 1.25 inch focal length, which is true. So the view down them can seem a little like looking into a tunnel. Owners of long focal length scopes find them useful tools though.

 

it's not just that I couldn't focus it, I could if I held the eyepiece in place by hand; the eyepiece only fitted into the scope if the focuser was fully retracted, if I did then try to use the focus controls the eyepiece was "ejected", hence I held it in my hand. Using the part I found on the barlow lens, I was able to secure the eyepiece in place. I'm trying to upload pics from my phone to mac to explain but having difficulty....there's a common element here, I know.

thanks for the swift response! I came back here to edit the 1.5 to 1.25 to find you'd already responded!

I appreciate there's no point focussing on close objects but there is nothing distant for me to try the scope on in daylight...under current lockdown, I can only see surrounding houses and just wanted to get it setup in readiness for tonight.

The barrel diameter is the same, so 1.25" but then the top is wider and only just fits into the scope...I assume my issue is that there is very little travel fitted directly like this.

Interesting that you mention the barlow lens...one of these came with the Skywatcher and taking it out I realise that it is in an adaptor of sorts (can be unscrewed) and I can the use that on the 40mm eyepiece too...so problem solved.

Apologies for denigrating the 40mm eyepiece...you're right though, people don't seem to be fond of them :-S

I have to say that the telescope came with much literature on the SynScan system but only one generic leaflet on telescope set-up - I'm surprised there was nothing specific to this model.

I am a complete beginner; I received a telescope today as a present (Skywatcher Skyhawk 1145p) and included from the supplier was a gift pack which included a Celestron 40mm eyepiece (I have already established from reading articles/posts that the benefits of such are dubious but...)

Whereas the supplied, Skywatcher eyepieces fit perfectly and I can use the focus wheels, the 40mm eyepiece only just slots in and on attempting to focus nearer objects, it is pushed out; I have to hold it in place

Is the Celestron 1.25" eyepiece just not compatible with the Skywatcher telescope or is there something else I need to do to use this particular eyepiece?

Confused and befuddled...