Atik16HR not reaching focus

[Spikey]

I'm not having a good night.

Atik16HR on the ED80 with an SX filter wheel in front of it. I'm not using a nosepiece on the 16HR, screwed straight into the FW.

It's easily with 55mm.

I can't reach focus with the focusser all the way out, extension tube required possibly ?

[steppenwolf]

Yes, you will need an extension tube with this setup - 50mm should do it.

[Spikey]

Cheers Steve, I'll see what I can cobble together. I was looking forward to some Ha first light !

[Gina]

Yes, I found the need for an extension tube with my E80.

[Spikey]

Not needed it on the Canon, although I was using a FR which helps a little. Nor on the Atik16iC. I've just managed to find a piece so I'll try again

[Spikey]

Sorted now, thanks very much. 50mm extension tube required, now the focusser decides to start slipping again. One last fiddle with that in the daytime again and see how long it lasts. Might have to be a steeltrack !

[Gina]

Yeah... I've got my eye on a SteelTrack - when funds permit

[Spikey]

Shame the stock one isn't so good.

[ollypenrice]

See why I'm always banging on about cheap Crayfords? I must say that the Steeltrack on the 14 inch is doing well and for me to say that (long history of abusing Crayfords) it must be good! The focuser is like the mount. It needs to be boringly effective and rather expensive.

Olly

[Gina]

So it would seem

[Spikey]

Olly, You're right, I must have had the stock crayford off at least half a dozen times now and fully stripped out to bits twice.

It lasts for a while and then starts slipping again. It's such a pity as the rest of the scope is really good.

[Nadeem Shah]

yes but good crayfords come at a premium price...

[Viv]

Was using the local trees as targets today.

Conclusion, the steel track is worth every penny & extensions tubes must be used with it.

Had a 80mm extension, 50mm extenstion, baader hyperion (using the 2" part) & then my dslr hanging off the back - nice & stable.

[Gina]

That is the next major item on my to buy list