not focusing

[Bendeavour]

My focusing wheel doesn't turn far enough to focus when taking pictures of the moon with my 2x barlow/t-adapter.

I've tried everything but it doesn't work

Can anyone help?

[Bendeavour]

please can anyone help?

[knobby]

Is that in wards or outwards?

what about without the Barlow?

You could try unscrewing the lens from the Barlow and just use the Barlow without it as an extension if its not focusing out wards enough

[Bendeavour]

Is that in wards or outwards?

what about without the Barlow?

You could try unscrewing the lens from the Barlow and just use the Barlow without it as an extension if its not focusing out wards enough

its not focusing inwards

I've unscrewed the barlow lens but that didn't help

[Jannis]

The barlow lens moves the focus point outwards, not inwards. so by having not enough inwards movement to reach focus, removing the barlow lens and just use the barlow tube only makes it worse.

[Marc1980]

The barlow lens moves the focus point outwards, not inwards. so by having not enough inwards movement to reach focus, removing the barlow lens and just use the barlow tube only makes it worse.

I'm surprised that you dont get enough inward travel WITH the barlow. My 250pds wont focus without a barlow when imaging but when I put the barlow on it is ok. I have seen on here people suggesting moving one of the mirrors up or down the OTA. I dont know enough about it to recommend it though.

Hope you get it sorted.

Marc

[Tinker1947]

I suspect it need to be turned outwards not inwards, try moving it outwards with and without the Barlow lens.......you can do this in day light on a distant object,,,,,

[Bendeavour]

I suspect it need to be turned outwards not inwards, try moving it outwards with and without the Barlow lens.......you can do this in day light on a distant object,,,,,

ill try that

if that doesn't work should i get a higher mag barlow?