Horse head test

[vdb]

So I was testing my iEQ 45 to see if it could handle 1600 mm focal length and a pixel size of 5.4 micron ...

Guiding was all over the place and both RA and DEC jumped on pixel in both directions resulting in an rms of 0.7 ...

I will not win any price with this image, but the goal was to see if I could get somewhere with a pixel scale of 0.7 as we are building a setup with the same scale ... it is clear a better mount is needed ...

Also I think collimation was off or focus ... but with a GSO RC 8 that's standard

4x 30 minute Ha 5nm with QSI 583, no darks, bias, flats ...

Yves.

[gary1968]

Not a lot worng with that mate, at least if it were mine I'd be happy.

Gary

[ollypenrice]

As part of the 'we' in your introduction you are making me nervous, Yves!! In fact that looks pretty clean. Thirty minute subs... don't beat yourself up over this result, I would say. I had a good look and feel less nervous...

Olly

[vdb]

Hi Olly yes the graph made me think oh no, but the result is ok, I think it's because I used OAG ... so guiding at 1600mm is not to be expected to be as smooth as at 400mm ...

A shame I did not collimate first ...

Also maybe the stars could be smaller with better guiding ...

Yves.