The
I'm just experimenting. I doubt that it will work well. Probably got some serious flexure problems (as you will summarize from the pictures of the
Yeah, so probably not going to be a good astrograph. But you know how it is when it gets cloudy and you have a shop full of junk just waiting to be assembled into something useful. Who knows, it might surprise me and work quite well.
I did the mirror myself and tested with a Bath Interferometer (which I also made myself). Attached is an image of the wavefront resulting from the interferometer test plus a Ronchigram for the same mirror. You can see the mirror is a bit rough. But that doesn't matter as much with such a slow mirror.
I took a picture of a distant telephone tower (very cloudy day yesterday and supposed to keep raining). The image looks quite sharp to my eye. When the clouds go away and the moon comes back, I'll try to get some lunar shots.
In the meantime, here are the pictures:
THE
Image of distant telephone tower (I used a Fujifilm X-A1)
Ronchigram of the mirror (outside RofC):
Interferometry test (using Bath interferometer and DFTF analysis) with Guassian blur set to 10%.
[[This is technically referred to as a "wavefront" showing the highs and lows on the mirror surface]]
Rochingram generated by DFTF analysis of wavefront:
[[If the DFTF Ronchigram matches the REAL Ronchigram (see above), it means that your interferometer test is good]]
Clears to YA!
BABO