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William Optics IV versus Riccardi Reducer
Hi Guys
With reference to my earlier uploaded picture "Lagoon M8 through a Williams Optics IV Reducer", my Riccardi finally arrived. I did a couple of quick shots of the Lagoon with the new Riccardi, "between cloud banks", the results where a little disappointing to say the least. Below is the Top Left Hand Corner of the Lagoon magnified up a fair bit, for both the WO and Riccardi reducers. I might add, that the center of the field is fine for both reducers.
I haven't given up on the Riccardi yet, when I measured the distance from the back of the Riccardi to the CCD chip it was 73.5mm, the manufacturer quotes 74mm for the Esprit 150mm, maybe that extra 0.5mm makes a big difference. I will test this when the moon makes astrophotography difficult again (as it will), but for now it is back to the 12" and Galaxy hunting.
At my age you only have a limited amount of darks night left, I don't like to waste them.
Cheers
Peter
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