Orion SPX

[Rocket Pooch]

Ok, this is what my report says for my little 6" er, apparently a 1/6th wave.

Strehl 0.976

PV 0.144
RMS 0.025
AstMag 0.069


Fay, can you get your report and put the same figures up.

[Fay]

Chris,



strehl   0.987

pv      0.122

rms    0.018

astmag  0.020

[Ian]

found the discussion I mentioned. It was on QCUIAG. In brief, here's a web-page one of the guys has put together discussing interpreting interferometry, common faults and their impact on star image.

http://www.digital-flight.com/thebigeye/Optical_quality/optical_quality.htm

[RobertM]

That's very interesting Ian, I had also read that thread on OO mirrors though to me it did seem a bit picky and that someone had a bit of a chip on their sholder about OO mirrors.

[Ian]

I thought that too, but it's an interesting article nevertheless.

[Fay]

Well, tried to get  going last night, to no avail. Did not expect miracles.

Besides mount flashing, could not find my target, thought at least if I  could focus etc, that would be ok. All stars had a drift look going towards top right. It could not be drift as only doing 2-5 secs & stars did not move out of view. So has collimation slipped ? I had the cc on the atik & filter wheel, also took cc off & just used Atik & filterwheel, in case the connection is wrong, but result the same.

Will have to make mount a bit higher.

T ring stuck again, filter wheel in fridge but have a feeling I will not be lucky a second time!

Any solutions welcome